1871 Commits

Author	SHA1	Message	Date
Namhyung Kim	5a9f95b670	tools headers UAPI: Update tools's copy of kvm.h header ... tldr; Just FYI, I'm carrying this on the perf tools tree. Full explanation: There used to be no copies, with tools/ code using kernel headers directly. From time to time tools/perf/ broke due to legitimate kernel hacking. At some point Linus complained about such direct usage. Then we adopted the current model. The way these headers are used in perf are not restricted to just including them to compile something. There are sometimes used in scripts that convert defines into string tables, etc, so some change may break one of these scripts, or new MSRs may use some different #define pattern, etc. E.g.: $ ls -1 tools/perf/trace/beauty/*.sh | head -5 tools/perf/trace/beauty/arch_errno_names.sh tools/perf/trace/beauty/drm_ioctl.sh tools/perf/trace/beauty/fadvise.sh tools/perf/trace/beauty/fsconfig.sh tools/perf/trace/beauty/fsmount.sh $ $ tools/perf/trace/beauty/fadvise.sh static const char *fadvise_advices[] = { [0] = "NORMAL", [1] = "RANDOM", [2] = "SEQUENTIAL", [3] = "WILLNEED", [4] = "DONTNEED", [5] = "NOREUSE", }; $ The tools/perf/check-headers.sh script, part of the tools/ build process, points out changes in the original files. So its important not to touch the copies in tools/ when doing changes in the original kernel headers, that will be done later, when check-headers.sh inform about the change to the perf tools hackers. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: kvm@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20231121225650.390246-3-namhyung@kernel.org	2023-11-22 10:57:46 -08:00
Namhyung Kim	1118446666	tools headers UAPI: Update tools's copy of fscrypt.h header ... tldr; Just FYI, I'm carrying this on the perf tools tree. Full explanation: There used to be no copies, with tools/ code using kernel headers directly. From time to time tools/perf/ broke due to legitimate kernel hacking. At some point Linus complained about such direct usage. Then we adopted the current model. The way these headers are used in perf are not restricted to just including them to compile something. There are sometimes used in scripts that convert defines into string tables, etc, so some change may break one of these scripts, or new MSRs may use some different #define pattern, etc. E.g.: $ ls -1 tools/perf/trace/beauty/*.sh | head -5 tools/perf/trace/beauty/arch_errno_names.sh tools/perf/trace/beauty/drm_ioctl.sh tools/perf/trace/beauty/fadvise.sh tools/perf/trace/beauty/fsconfig.sh tools/perf/trace/beauty/fsmount.sh $ $ tools/perf/trace/beauty/fadvise.sh static const char *fadvise_advices[] = { [0] = "NORMAL", [1] = "RANDOM", [2] = "SEQUENTIAL", [3] = "WILLNEED", [4] = "DONTNEED", [5] = "NOREUSE", }; $ The tools/perf/check-headers.sh script, part of the tools/ build process, points out changes in the original files. So its important not to touch the copies in tools/ when doing changes in the original kernel headers, that will be done later, when check-headers.sh inform about the change to the perf tools hackers. Cc: Eric Biggers <ebiggers@kernel.org> Cc: "Theodore Y. Ts'o" <tytso@mit.edu> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: linux-fscrypt@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20231121225650.390246-2-namhyung@kernel.org	2023-11-22 10:57:46 -08:00
Namhyung Kim	1041dfe610	tools headers UAPI: Update tools's copy of drm headers ... tldr; Just FYI, I'm carrying this on the perf tools tree. Full explanation: There used to be no copies, with tools/ code using kernel headers directly. From time to time tools/perf/ broke due to legitimate kernel hacking. At some point Linus complained about such direct usage. Then we adopted the current model. The way these headers are used in perf are not restricted to just including them to compile something. There are sometimes used in scripts that convert defines into string tables, etc, so some change may break one of these scripts, or new MSRs may use some different #define pattern, etc. E.g.: $ ls -1 tools/perf/trace/beauty/*.sh | head -5 tools/perf/trace/beauty/arch_errno_names.sh tools/perf/trace/beauty/drm_ioctl.sh tools/perf/trace/beauty/fadvise.sh tools/perf/trace/beauty/fsconfig.sh tools/perf/trace/beauty/fsmount.sh $ $ tools/perf/trace/beauty/fadvise.sh static const char *fadvise_advices[] = { [0] = "NORMAL", [1] = "RANDOM", [2] = "SEQUENTIAL", [3] = "WILLNEED", [4] = "DONTNEED", [5] = "NOREUSE", }; $ The tools/perf/check-headers.sh script, part of the tools/ build process, points out changes in the original files. So its important not to touch the copies in tools/ when doing changes in the original kernel headers, that will be done later, when check-headers.sh inform about the change to the perf tools hackers. Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20231121225650.390246-1-namhyung@kernel.org	2023-11-22 10:57:46 -08:00
Linus Torvalds	7ab89417ed	perf tools changes for v6.7 ... Build ----- * Compile BPF programs by default if clang (>= 12.0.1) is available to enable more features like kernel lock contention, off-cpu profiling, kwork, sample filtering and so on. It can be disabled by passing BUILD_BPF_SKEL=0 to make. * Produce better error messages for bison on debug build (make DEBUG=1) by defining YYDEBUG symbol internally. perf record ----------- * Track sideband events (like FORK/MMAP) from all CPUs even if perf record targets a subset of CPUs only (using -C option). Otherwise it may lose some information happened on a CPU out of the target list. * Fix checking raw sched_switch tracepoint argument using system BTF. This affects off-cpu profiling which attaches a BPF program to the raw tracepoint. perf lock contention -------------------- * Add --lock-cgroup option to see contention by cgroups. This should be used with BPF only (using -b option). $ sudo perf lock con -ab --lock-cgroup -- sleep 1 contended total wait max wait avg wait cgroup 835 14.06 ms 41.19 us 16.83 us /system.slice/led.service 25 122.38 us 13.77 us 4.89 us / 44 23.73 us 3.87 us 539 ns /user.slice/user-657345.slice/session-c4.scope 1 491 ns 491 ns 491 ns /system.slice/connectd.service * Add -G/--cgroup-filter option to see contention only for given cgroups. This can be useful when you identified a cgroup in the above command and want to investigate more on it. It also works with other output options like -t/--threads and -l/--lock-addr. $ sudo perf lock con -ab -G /user.slice/user-657345.slice/session-c4.scope -- sleep 1 contended total wait max wait avg wait type caller 8 77.11 us 17.98 us 9.64 us spinlock futex_wake+0xc8 2 24.56 us 14.66 us 12.28 us spinlock tick_do_update_jiffies64+0x25 1 4.97 us 4.97 us 4.97 us spinlock futex_q_lock+0x2a * Use per-cpu array for better spinlock tracking. This is to improve performance of the BPF program and to avoid nested contention on a lock in the BPF hash map. * Update callstack check for PowerPC. To find a representative caller of a lock, it needs to look up the call stacks. It ends the lookup when it sees 0 in the call stack buffer. However, PowerPC call stacks can have 0 values in the beginning so skip them when it expects valid call stacks after. perf kwork ---------- * Support 'sched' class (for -k option) so that it can see task scheduling event (using sched_switch tracepoint) as well as irq and workqueue items. * Add perf kwork top subcommand to show more accurate cpu utilization with sched class above. It works both with a recorded data (using perf kwork record command) and BPF (using -b option). Unlike perf top command, it does not support interactive mode (yet). $ sudo perf kwork top -b -k sched Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 160702.425 ms, 8 cpus %Cpu(s): 36.00% id, 0.00% hi, 0.00% si %Cpu0 [|||||||||||||||||| 61.66%] %Cpu1 [|||||||||||||||||| 61.27%] %Cpu2 [||||||||||||||||||| 66.40%] %Cpu3 [|||||||||||||||||| 61.28%] %Cpu4 [|||||||||||||||||| 61.82%] %Cpu5 [||||||||||||||||||||||| 77.41%] %Cpu6 [|||||||||||||||||| 61.73%] %Cpu7 [|||||||||||||||||| 63.25%] PID SPID %CPU RUNTIME COMMMAND ------------------------------------------------------------- 0 0 38.72 8089.463 ms [swapper/1] 0 0 38.71 8084.547 ms [swapper/3] 0 0 38.33 8007.532 ms [swapper/0] 0 0 38.26 7992.985 ms [swapper/6] 0 0 38.17 7971.865 ms [swapper/4] 0 0 36.74 7447.765 ms [swapper/7] 0 0 33.59 6486.942 ms [swapper/2] 0 0 22.58 3771.268 ms [swapper/5] 9545 9351 2.48 447.136 ms sched-messaging 9574 9351 2.09 418.583 ms sched-messaging 9724 9351 2.05 372.407 ms sched-messaging 9531 9351 2.01 368.804 ms sched-messaging 9512 9351 2.00 362.250 ms sched-messaging 9514 9351 1.95 357.767 ms sched-messaging 9538 9351 1.86 384.476 ms sched-messaging 9712 9351 1.84 386.490 ms sched-messaging 9723 9351 1.83 380.021 ms sched-messaging 9722 9351 1.82 382.738 ms sched-messaging 9517 9351 1.81 354.794 ms sched-messaging 9559 9351 1.79 344.305 ms sched-messaging 9725 9351 1.77 365.315 ms sched-messaging <SNIP> * Add hard/soft-irq statistics to perf kwork top. This will show the total CPU utilization with IRQ stats like below: $ sudo perf kwork top -b -k sched,irq,softirq Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 12554.889 ms, 8 cpus %Cpu(s): 96.23% id, 0.10% hi, 0.19% si <---- here %Cpu0 [| 4.60%] %Cpu1 [| 4.59%] %Cpu2 [ 2.73%] %Cpu3 [| 3.81%] <SNIP> perf bench ---------- * Add -G/--cgroups option to perf bench sched pipe. The pipe bench is good to measure context switch overhead. With this option, it puts the reader and writer tasks in separate cgroups to enforce context switch between two different cgroups. Also it needs to set CPU affinity of the tasks in a CPU to accurately measure the impact of cgroup context switches. $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.307 [sec] 3.078180 usecs/op 324867 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000': 200,026 context-switches 63 cgroup-switches 0.321637922 seconds time elapsed You can see small number of cgroup-switches because both write and read tasks are in the same cgroup. $ sudo mkdir /sys/fs/cgroup/{AAA,BBB} $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.351 [sec] 3.512990 usecs/op 284657 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB': 200,020 context-switches 200,019 cgroup-switches 0.365034567 seconds time elapsed Now context-switches and cgroup-switches are almost same. And you can see the pipe operation took little more. * Kill child processes when perf bench sched messaging exited abnormally. Otherwise it'd leave the child doing unnecessary work. perf test --------- * Fix various shellcheck issues on the tests written in shell script. * Skip tests when condition is not satisfied: - object code reading test for non-text section addresses. - CoreSight test if cs_etm// event is not available. - lock contention test if not enough CPUs. Event parsing ------------- * Make PMU alias name loading lazy to reduce the startup time in the event parsing code for perf record, stat and others in the general case. * Lazily compute PMU default config. In the same sense, delay PMU initialization until it's really needed to reduce the startup cost. * Fix event term values that are raw events. The event specification can have several terms including event name. But sometimes it clashes with raw event encoding which starts with 'r' and has hex-digits. For example, an event named 'read' should be processed as a normal event but it was mis-treated as a raw encoding and caused a failure. $ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1 event syntax error: '..nning/event=read/' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event> event selector. use 'perf list' to list available events Event metrics ------------- * Add "Compat" regex to match event with multiple identifiers. * Usual updates for Intel, Power10, Arm telemetry/CMN and AmpereOne. Misc ---- * Assorted memory leak fixes and footprint reduction. * Add "bpf_skeletons" to perf version --build-options so that users can check whether their perf tools have BPF support easily. * Fix unaligned access in Intel-PT packet decoder found by undefined-behavior sanitizer. * Avoid frequency mode for the dummy event. Surprisingly it'd impact kernel timer tick handler performance by force iterating all PMU events. * Update bash shell completion for events and metrics. Signed-off-by: Namhyung Kim <namhyung@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZUMg7wAKCRCMstVUGiXM g8FvAQC9KED6H8rlH7UTvxE6fM947EJbldwGrNA1zGx++Ucd3gD/ewA2A6SUcIh6 Tua/XovmYOQbuDYOwlRHe+sdDag0sgg= =GrCE -----END PGP SIGNATURE----- Merge tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools updates from Namhyung Kim: "Build: - Compile BPF programs by default if clang (>= 12.0.1) is available to enable more features like kernel lock contention, off-cpu profiling, kwork, sample filtering and so on. This can be disabled by passing BUILD_BPF_SKEL=0 to make. - Produce better error messages for bison on debug build (make DEBUG=1) by defining YYDEBUG symbol internally. perf record: - Track sideband events (like FORK/MMAP) from all CPUs even if perf record targets a subset of CPUs only (using -C option). Otherwise it may lose some information happened on a CPU out of the target list. - Fix checking raw sched_switch tracepoint argument using system BTF. This affects off-cpu profiling which attaches a BPF program to the raw tracepoint. perf lock contention: - Add --lock-cgroup option to see contention by cgroups. This should be used with BPF only (using -b option). $ sudo perf lock con -ab --lock-cgroup -- sleep 1 contended total wait max wait avg wait cgroup 835 14.06 ms 41.19 us 16.83 us /system.slice/led.service 25 122.38 us 13.77 us 4.89 us / 44 23.73 us 3.87 us 539 ns /user.slice/user-657345.slice/session-c4.scope 1 491 ns 491 ns 491 ns /system.slice/connectd.service - Add -G/--cgroup-filter option to see contention only for given cgroups. This can be useful when you identified a cgroup in the above command and want to investigate more on it. It also works with other output options like -t/--threads and -l/--lock-addr. $ sudo perf lock con -ab -G /user.slice/user-657345.slice/session-c4.scope -- sleep 1 contended total wait max wait avg wait type caller 8 77.11 us 17.98 us 9.64 us spinlock futex_wake+0xc8 2 24.56 us 14.66 us 12.28 us spinlock tick_do_update_jiffies64+0x25 1 4.97 us 4.97 us 4.97 us spinlock futex_q_lock+0x2a - Use per-cpu array for better spinlock tracking. This is to improve performance of the BPF program and to avoid nested contention on a lock in the BPF hash map. - Update callstack check for PowerPC. To find a representative caller of a lock, it needs to look up the call stacks. It ends the lookup when it sees 0 in the call stack buffer. However, PowerPC call stacks can have 0 values in the beginning so skip them when it expects valid call stacks after. perf kwork: - Support 'sched' class (for -k option) so that it can see task scheduling event (using sched_switch tracepoint) as well as irq and workqueue items. - Add perf kwork top subcommand to show more accurate cpu utilization with sched class above. It works both with a recorded data (using perf kwork record command) and BPF (using -b option). Unlike perf top command, it does not support interactive mode (yet). $ sudo perf kwork top -b -k sched Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 160702.425 ms, 8 cpus %Cpu(s): 36.00% id, 0.00% hi, 0.00% si %Cpu0 [|||||||||||||||||| 61.66%] %Cpu1 [|||||||||||||||||| 61.27%] %Cpu2 [||||||||||||||||||| 66.40%] %Cpu3 [|||||||||||||||||| 61.28%] %Cpu4 [|||||||||||||||||| 61.82%] %Cpu5 [||||||||||||||||||||||| 77.41%] %Cpu6 [|||||||||||||||||| 61.73%] %Cpu7 [|||||||||||||||||| 63.25%] PID SPID %CPU RUNTIME COMMMAND ------------------------------------------------------------- 0 0 38.72 8089.463 ms [swapper/1] 0 0 38.71 8084.547 ms [swapper/3] 0 0 38.33 8007.532 ms [swapper/0] 0 0 38.26 7992.985 ms [swapper/6] 0 0 38.17 7971.865 ms [swapper/4] 0 0 36.74 7447.765 ms [swapper/7] 0 0 33.59 6486.942 ms [swapper/2] 0 0 22.58 3771.268 ms [swapper/5] 9545 9351 2.48 447.136 ms sched-messaging 9574 9351 2.09 418.583 ms sched-messaging 9724 9351 2.05 372.407 ms sched-messaging 9531 9351 2.01 368.804 ms sched-messaging 9512 9351 2.00 362.250 ms sched-messaging 9514 9351 1.95 357.767 ms sched-messaging 9538 9351 1.86 384.476 ms sched-messaging 9712 9351 1.84 386.490 ms sched-messaging 9723 9351 1.83 380.021 ms sched-messaging 9722 9351 1.82 382.738 ms sched-messaging 9517 9351 1.81 354.794 ms sched-messaging 9559 9351 1.79 344.305 ms sched-messaging 9725 9351 1.77 365.315 ms sched-messaging <SNIP> - Add hard/soft-irq statistics to perf kwork top. This will show the total CPU utilization with IRQ stats like below: $ sudo perf kwork top -b -k sched,irq,softirq Starting trace, Hit <Ctrl+C> to stop and report ^C Total : 12554.889 ms, 8 cpus %Cpu(s): 96.23% id, 0.10% hi, 0.19% si <---- here %Cpu0 [| 4.60%] %Cpu1 [| 4.59%] %Cpu2 [ 2.73%] %Cpu3 [| 3.81%] <SNIP> perf bench: - Add -G/--cgroups option to perf bench sched pipe. The pipe bench is good to measure context switch overhead. With this option, it puts the reader and writer tasks in separate cgroups to enforce context switch between two different cgroups. Also it needs to set CPU affinity of the tasks in a CPU to accurately measure the impact of cgroup context switches. $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.307 [sec] 3.078180 usecs/op 324867 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000': 200,026 context-switches 63 cgroup-switches 0.321637922 seconds time elapsed You can see small number of cgroup-switches because both write and read tasks are in the same cgroup. $ sudo mkdir /sys/fs/cgroup/{AAA,BBB} $ sudo perf stat -e context-switches,cgroup-switches -- \ > taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB # Running 'sched/pipe' benchmark: # Executed 100000 pipe operations between two processes Total time: 0.351 [sec] 3.512990 usecs/op 284657 ops/sec Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB': 200,020 context-switches 200,019 cgroup-switches 0.365034567 seconds time elapsed Now context-switches and cgroup-switches are almost same. And you can see the pipe operation took little more. - Kill child processes when perf bench sched messaging exited abnormally. Otherwise it'd leave the child doing unnecessary work. perf test: - Fix various shellcheck issues on the tests written in shell script. - Skip tests when condition is not satisfied: - object code reading test for non-text section addresses. - CoreSight test if cs_etm// event is not available. - lock contention test if not enough CPUs. Event parsing: - Make PMU alias name loading lazy to reduce the startup time in the event parsing code for perf record, stat and others in the general case. - Lazily compute PMU default config. In the same sense, delay PMU initialization until it's really needed to reduce the startup cost. - Fix event term values that are raw events. The event specification can have several terms including event name. But sometimes it clashes with raw event encoding which starts with 'r' and has hex-digits. For example, an event named 'read' should be processed as a normal event but it was mis-treated as a raw encoding and caused a failure. $ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1 event syntax error: '..nning/event=read/' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event> event selector. use 'perf list' to list available events Event metrics: - Add "Compat" regex to match event with multiple identifiers. - Usual updates for Intel, Power10, Arm telemetry/CMN and AmpereOne. Misc: - Assorted memory leak fixes and footprint reduction. - Add "bpf_skeletons" to perf version --build-options so that users can check whether their perf tools have BPF support easily. - Fix unaligned access in Intel-PT packet decoder found by undefined-behavior sanitizer. - Avoid frequency mode for the dummy event. Surprisingly it'd impact kernel timer tick handler performance by force iterating all PMU events. - Update bash shell completion for events and metrics" * tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (187 commits) perf vendor events intel: Update tsx_cycles_per_elision metrics perf vendor events intel: Update bonnell version number to v5 perf vendor events intel: Update westmereex events to v4 perf vendor events intel: Update meteorlake events to v1.06 perf vendor events intel: Update knightslanding events to v16 perf vendor events intel: Add typo fix for ivybridge FP perf vendor events intel: Update a spelling in haswell/haswellx perf vendor events intel: Update emeraldrapids to v1.01 perf vendor events intel: Update alderlake/alderlake events to v1.23 perf build: Disable BPF skeletons if clang version is < 12.0.1 perf callchain: Fix spelling mistake "statisitcs" -> "statistics" perf report: Fix spelling mistake "heirachy" -> "hierarchy" perf python: Fix binding linkage due to rename and move of evsel__increase_rlimit() perf tests: test_arm_coresight: Simplify source iteration perf vendor events intel: Add tigerlake two metrics perf vendor events intel: Add broadwellde two metrics perf vendor events intel: Fix broadwellde tma_info_system_dram_bw_use metric perf mem_info: Add and use map_symbol__exit and addr_map_symbol__exit perf callchain: Minor layout changes to callchain_list perf callchain: Make brtype_stat in callchain_list optional ...	2023-11-03 08:17:38 -10:00
Linus Torvalds	8f6f76a6a2	As usual, lots of singleton and doubleton patches all over the tree and ... there's little I can say which isn't in the individual changelogs. The lengthier patch series are - "kdump: use generic functions to simplify crashkernel reservation in arch", from Baoquan He. This is mainly cleanups and consolidation of the "crashkernel=" kernel parameter handling. - After much discussion, David Laight's "minmax: Relax type checks in min() and max()" is here. Hopefully reduces some typecasting and the use of min_t() and max_t(). - A group of patches from Oleg Nesterov which clean up and slightly fix our handling of reads from /proc/PID/task/... and which remove task_struct.therad_group. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZUQP9wAKCRDdBJ7gKXxA jmOAAQDh8sxagQYocoVsSm28ICqXFeaY9Co1jzBIDdNesAvYVwD/c2DHRqJHEiS4 63BNcG3+hM9nwGJHb5lyh5m79nBMRg0= =On4u -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: "As usual, lots of singleton and doubleton patches all over the tree and there's little I can say which isn't in the individual changelogs. The lengthier patch series are - 'kdump: use generic functions to simplify crashkernel reservation in arch', from Baoquan He. This is mainly cleanups and consolidation of the 'crashkernel=' kernel parameter handling - After much discussion, David Laight's 'minmax: Relax type checks in min() and max()' is here. Hopefully reduces some typecasting and the use of min_t() and max_t() - A group of patches from Oleg Nesterov which clean up and slightly fix our handling of reads from /proc/PID/task/... and which remove task_struct.thread_group" * tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits) scripts/gdb/vmalloc: disable on no-MMU scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n .mailmap: add address mapping for Tomeu Vizoso mailmap: update email address for Claudiu Beznea tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions .mailmap: map Benjamin Poirier's address scripts/gdb: add lx_current support for riscv ocfs2: fix a spelling typo in comment proc: test ProtectionKey in proc-empty-vm test proc: fix proc-empty-vm test with vsyscall fs/proc/base.c: remove unneeded semicolon do_io_accounting: use sig->stats_lock do_io_accounting: use __for_each_thread() ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error() ocfs2: fix a typo in a comment scripts/show_delta: add __main__ judgement before main code treewide: mark stuff as __ro_after_init fs: ocfs2: check status values proc: test /proc/${pid}/statm compiler.h: move __is_constexpr() to compiler.h ...	2023-11-02 20:53:31 -10:00
Linus Torvalds	ecae0bd517	Many singleton patches against the MM code. The patch series which are ... included in this merge do the following: - Kemeng Shi has contributed some compation maintenance work in the series "Fixes and cleanups to compaction". - Joel Fernandes has a patchset ("Optimize mremap during mutual alignment within PMD") which fixes an obscure issue with mremap()'s pagetable handling during a subsequent exec(), based upon an implementation which Linus suggested. - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the following patch series: mm/damon: misc fixups for documents, comments and its tracepoint mm/damon: add a tracepoint for damos apply target regions mm/damon: provide pseudo-moving sum based access rate mm/damon: implement DAMOS apply intervals mm/damon/core-test: Fix memory leaks in core-test mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval - In the series "Do not try to access unaccepted memory" Adrian Hunter provides some fixups for the recently-added "unaccepted memory' feature. To increase the feature's checking coverage. "Plug a few gaps where RAM is exposed without checking if it is unaccepted memory". - In the series "cleanups for lockless slab shrink" Qi Zheng has done some maintenance work which is preparation for the lockless slab shrinking code. - Qi Zheng has redone the earlier (and reverted) attempt to make slab shrinking lockless in the series "use refcount+RCU method to implement lockless slab shrink". - David Hildenbrand contributes some maintenance work for the rmap code in the series "Anon rmap cleanups". - Kefeng Wang does more folio conversions and some maintenance work in the migration code. Series "mm: migrate: more folio conversion and unification". - Matthew Wilcox has fixed an issue in the buffer_head code which was causing long stalls under some heavy memory/IO loads. Some cleanups were added on the way. Series "Add and use bdev_getblk()". - In the series "Use nth_page() in place of direct struct page manipulation" Zi Yan has fixed a potential issue with the direct manipulation of hugetlb page frames. - In the series "mm: hugetlb: Skip initialization of gigantic tail struct pages if freed by HVO" has improved our handling of gigantic pages in the hugetlb vmmemmep optimizaton code. This provides significant boot time improvements when significant amounts of gigantic pages are in use. - Matthew Wilcox has sent the series "Small hugetlb cleanups" - code rationalization and folio conversions in the hugetlb code. - Yin Fengwei has improved mlock()'s handling of large folios in the series "support large folio for mlock" - In the series "Expose swapcache stat for memcg v1" Liu Shixin has added statistics for memcg v1 users which are available (and useful) under memcg v2. - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable) prctl so that userspace may direct the kernel to not automatically propagate the denial to child processes. The series is named "MDWE without inheritance". - Kefeng Wang has provided the series "mm: convert numa balancing functions to use a folio" which does what it says. - In the series "mm/ksm: add fork-exec support for prctl" Stefan Roesch makes is possible for a process to propagate KSM treatment across exec(). - Huang Ying has enhanced memory tiering's calculation of memory distances. This is used to permit the dax/kmem driver to use "high bandwidth memory" in addition to Optane Data Center Persistent Memory Modules (DCPMM). The series is named "memory tiering: calculate abstract distance based on ACPI HMAT" - In the series "Smart scanning mode for KSM" Stefan Roesch has optimized KSM by teaching it to retain and use some historical information from previous scans. - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the series "mm: memcg: fix tracking of pending stats updates values". - In the series "Implement IOCTL to get and optionally clear info about PTEs" Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits us to atomically read-then-clear page softdirty state. This is mainly used by CRIU. - Hugh Dickins contributed the series "shmem,tmpfs: general maintenance" - a bunch of relatively minor maintenance tweaks to this code. - Matthew Wilcox has increased the use of the VMA lock over file-backed page faults in the series "Handle more faults under the VMA lock". Some rationalizations of the fault path became possible as a result. - In the series "mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()" David Hildenbrand has implemented some cleanups and folio conversions. - In the series "various improvements to the GUP interface" Lorenzo Stoakes has simplified and improved the GUP interface with an eye to providing groundwork for future improvements. - Andrey Konovalov has sent along the series "kasan: assorted fixes and improvements" which does those things. - Some page allocator maintenance work from Kemeng Shi in the series "Two minor cleanups to break_down_buddy_pages". - In thes series "New selftest for mm" Breno Leitao has developed another MM self test which tickles a race we had between madvise() and page faults. - In the series "Add folio_end_read" Matthew Wilcox provides cleanups and an optimization to the core pagecache code. - Nhat Pham has added memcg accounting for hugetlb memory in the series "hugetlb memcg accounting". - Cleanups and rationalizations to the pagemap code from Lorenzo Stoakes, in the series "Abstract vma_merge() and split_vma()". - Audra Mitchell has fixed issues in the procfs page_owner code's new timestamping feature which was causing some misbehaviours. In the series "Fix page_owner's use of free timestamps". - Lorenzo Stoakes has fixed the handling of new mappings of sealed files in the series "permit write-sealed memfd read-only shared mappings". - Mike Kravetz has optimized the hugetlb vmemmap optimization in the series "Batch hugetlb vmemmap modification operations". - Some buffer_head folio conversions and cleanups from Matthew Wilcox in the series "Finish the create_empty_buffers() transition". - As a page allocator performance optimization Huang Ying has added automatic tuning to the allocator's per-cpu-pages feature, in the series "mm: PCP high auto-tuning". - Roman Gushchin has contributed the patchset "mm: improve performance of accounted kernel memory allocations" which improves their performance by ~30% as measured by a micro-benchmark. - folio conversions from Kefeng Wang in the series "mm: convert page cpupid functions to folios". - Some kmemleak fixups in Liu Shixin's series "Some bugfix about kmemleak". - Qi Zheng has improved our handling of memoryless nodes by keeping them off the allocation fallback list. This is done in the series "handle memoryless nodes more appropriately". - khugepaged conversions from Vishal Moola in the series "Some khugepaged folio conversions". -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZULEMwAKCRDdBJ7gKXxA jhQHAQCYpD3g849x69DmHnHWHm/EHQLvQmRMDeYZI+nx/sCJOwEAw4AKg0Oemv9y FgeUPAD1oasg6CP+INZvCj34waNxwAc= =E+Y4 -----END PGP SIGNATURE----- Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "Many singleton patches against the MM code. The patch series which are included in this merge do the following: - Kemeng Shi has contributed some compation maintenance work in the series 'Fixes and cleanups to compaction' - Joel Fernandes has a patchset ('Optimize mremap during mutual alignment within PMD') which fixes an obscure issue with mremap()'s pagetable handling during a subsequent exec(), based upon an implementation which Linus suggested - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the following patch series: mm/damon: misc fixups for documents, comments and its tracepoint mm/damon: add a tracepoint for damos apply target regions mm/damon: provide pseudo-moving sum based access rate mm/damon: implement DAMOS apply intervals mm/damon/core-test: Fix memory leaks in core-test mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval - In the series 'Do not try to access unaccepted memory' Adrian Hunter provides some fixups for the recently-added 'unaccepted memory' feature. To increase the feature's checking coverage. 'Plug a few gaps where RAM is exposed without checking if it is unaccepted memory' - In the series 'cleanups for lockless slab shrink' Qi Zheng has done some maintenance work which is preparation for the lockless slab shrinking code - Qi Zheng has redone the earlier (and reverted) attempt to make slab shrinking lockless in the series 'use refcount+RCU method to implement lockless slab shrink' - David Hildenbrand contributes some maintenance work for the rmap code in the series 'Anon rmap cleanups' - Kefeng Wang does more folio conversions and some maintenance work in the migration code. Series 'mm: migrate: more folio conversion and unification' - Matthew Wilcox has fixed an issue in the buffer_head code which was causing long stalls under some heavy memory/IO loads. Some cleanups were added on the way. Series 'Add and use bdev_getblk()' - In the series 'Use nth_page() in place of direct struct page manipulation' Zi Yan has fixed a potential issue with the direct manipulation of hugetlb page frames - In the series 'mm: hugetlb: Skip initialization of gigantic tail struct pages if freed by HVO' has improved our handling of gigantic pages in the hugetlb vmmemmep optimizaton code. This provides significant boot time improvements when significant amounts of gigantic pages are in use - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code rationalization and folio conversions in the hugetlb code - Yin Fengwei has improved mlock()'s handling of large folios in the series 'support large folio for mlock' - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has added statistics for memcg v1 users which are available (and useful) under memcg v2 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable) prctl so that userspace may direct the kernel to not automatically propagate the denial to child processes. The series is named 'MDWE without inheritance' - Kefeng Wang has provided the series 'mm: convert numa balancing functions to use a folio' which does what it says - In the series 'mm/ksm: add fork-exec support for prctl' Stefan Roesch makes is possible for a process to propagate KSM treatment across exec() - Huang Ying has enhanced memory tiering's calculation of memory distances. This is used to permit the dax/kmem driver to use 'high bandwidth memory' in addition to Optane Data Center Persistent Memory Modules (DCPMM). The series is named 'memory tiering: calculate abstract distance based on ACPI HMAT' - In the series 'Smart scanning mode for KSM' Stefan Roesch has optimized KSM by teaching it to retain and use some historical information from previous scans - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the series 'mm: memcg: fix tracking of pending stats updates values' - In the series 'Implement IOCTL to get and optionally clear info about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits us to atomically read-then-clear page softdirty state. This is mainly used by CRIU - Hugh Dickins contributed the series 'shmem,tmpfs: general maintenance', a bunch of relatively minor maintenance tweaks to this code - Matthew Wilcox has increased the use of the VMA lock over file-backed page faults in the series 'Handle more faults under the VMA lock'. Some rationalizations of the fault path became possible as a result - In the series 'mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()' David Hildenbrand has implemented some cleanups and folio conversions - In the series 'various improvements to the GUP interface' Lorenzo Stoakes has simplified and improved the GUP interface with an eye to providing groundwork for future improvements - Andrey Konovalov has sent along the series 'kasan: assorted fixes and improvements' which does those things - Some page allocator maintenance work from Kemeng Shi in the series 'Two minor cleanups to break_down_buddy_pages' - In thes series 'New selftest for mm' Breno Leitao has developed another MM self test which tickles a race we had between madvise() and page faults - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups and an optimization to the core pagecache code - Nhat Pham has added memcg accounting for hugetlb memory in the series 'hugetlb memcg accounting' - Cleanups and rationalizations to the pagemap code from Lorenzo Stoakes, in the series 'Abstract vma_merge() and split_vma()' - Audra Mitchell has fixed issues in the procfs page_owner code's new timestamping feature which was causing some misbehaviours. In the series 'Fix page_owner's use of free timestamps' - Lorenzo Stoakes has fixed the handling of new mappings of sealed files in the series 'permit write-sealed memfd read-only shared mappings' - Mike Kravetz has optimized the hugetlb vmemmap optimization in the series 'Batch hugetlb vmemmap modification operations' - Some buffer_head folio conversions and cleanups from Matthew Wilcox in the series 'Finish the create_empty_buffers() transition' - As a page allocator performance optimization Huang Ying has added automatic tuning to the allocator's per-cpu-pages feature, in the series 'mm: PCP high auto-tuning' - Roman Gushchin has contributed the patchset 'mm: improve performance of accounted kernel memory allocations' which improves their performance by ~30% as measured by a micro-benchmark - folio conversions from Kefeng Wang in the series 'mm: convert page cpupid functions to folios' - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about kmemleak' - Qi Zheng has improved our handling of memoryless nodes by keeping them off the allocation fallback list. This is done in the series 'handle memoryless nodes more appropriately' - khugepaged conversions from Vishal Moola in the series 'Some khugepaged folio conversions'" [ bcachefs conflicts with the dynamically allocated shrinkers have been resolved as per Stephen Rothwell in https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/ with help from Qi Zheng. The clone3 test filtering conflict was half-arsed by yours truly ] * tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits) mm/damon/sysfs: update monitoring target regions for online input commit mm/damon/sysfs: remove requested targets when online-commit inputs selftests: add a sanity check for zswap Documentation: maple_tree: fix word spelling error mm/vmalloc: fix the unchecked dereference warning in vread_iter() zswap: export compression failure stats Documentation: ubsan: drop "the" from article title mempolicy: migration attempt to match interleave nodes mempolicy: mmap_lock is not needed while migrating folios mempolicy: alloc_pages_mpol() for NUMA policy without vma mm: add page_rmappable_folio() wrapper mempolicy: remove confusing MPOL_MF_LAZY dead code mempolicy: mpol_shared_policy_init() without pseudo-vma mempolicy trivia: use pgoff_t in shared mempolicy tree mempolicy trivia: slightly more consistent naming mempolicy trivia: delete those ancient pr_debug()s mempolicy: fix migrate_pages(2) syscall return nr_failed kernfs: drop shared NUMA mempolicy hooks hugetlbfs: drop shared NUMA mempolicy pretence mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets() ...	2023-11-02 19:38:47 -10:00
Linus Torvalds	6803bd7956	ARM: ... * Generalized infrastructure for 'writable' ID registers, effectively allowing userspace to opt-out of certain vCPU features for its guest * Optimization for vSGI injection, opportunistically compressing MPIDR to vCPU mapping into a table * Improvements to KVM's PMU emulation, allowing userspace to select the number of PMCs available to a VM * Guest support for memory operation instructions (FEAT_MOPS) * Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing bugs and getting rid of useless code * Changes to the way the SMCCC filter is constructed, avoiding wasted memory allocations when not in use * Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing the overhead of errata mitigations * Miscellaneous kernel and selftest fixes LoongArch: * New architecture. The hardware uses the same model as x86, s390 and RISC-V, where guest/host mode is orthogonal to supervisor/user mode. The virtualization extensions are very similar to MIPS, therefore the code also has some similarities but it's been cleaned up to avoid some of the historical bogosities that are found in arch/mips. The kernel emulates MMU, timer and CSR accesses, while interrupt controllers are only emulated in userspace, at least for now. RISC-V: * Support for the Smstateen and Zicond extensions * Support for virtualizing senvcfg * Support for virtualized SBI debug console (DBCN) S390: * Nested page table management can be monitored through tracepoints and statistics x86: * Fix incorrect handling of VMX posted interrupt descriptor in KVM_SET_LAPIC, which could result in a dropped timer IRQ * Avoid WARN on systems with Intel IPI virtualization * Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs without forcing more common use cases to eat the extra memory overhead. * Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and SBPB, aka Selective Branch Predictor Barrier). * Fix a bug where restoring a vCPU snapshot that was taken within 1 second of creating the original vCPU would cause KVM to try to synchronize the vCPU's TSC and thus clobber the correct TSC being set by userspace. * Compute guest wall clock using a single TSC read to avoid generating an inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads. * "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain about a "Firmware Bug" if the bit isn't set for select F/M/S combos. Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to appease Windows Server 2022. * Don't apply side effects to Hyper-V's synthetic timer on writes from userspace to fix an issue where the auto-enable behavior can trigger spurious interrupts, i.e. do auto-enabling only for guest writes. * Remove an unnecessary kick of all vCPUs when synchronizing the dirty log without PML enabled. * Advertise "support" for non-serializing FS/GS base MSR writes as appropriate. * Harden the fast page fault path to guard against encountering an invalid root when walking SPTEs. * Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n. * Use the fast path directly from the timer callback when delivering Xen timer events, instead of waiting for the next iteration of the run loop. This was not done so far because previously proposed code had races, but now care is taken to stop the hrtimer at critical points such as restarting the timer or saving the timer information for userspace. * Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag. * Optimize injection of PMU interrupts that are simultaneous with NMIs. * Usual handful of fixes for typos and other warts. x86 - MTRR/PAT fixes and optimizations: * Clean up code that deals with honoring guest MTRRs when the VM has non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled. * Zap EPT entries when non-coherent DMA assignment stops/start to prevent using stale entries with the wrong memtype. * Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y. This was done as a workaround for virtual machine BIOSes that did not bother to clear CR0.CD (because ancient KVM/QEMU did not bother to set it, in turn), and there's zero reason to extend the quirk to also ignore guest PAT. x86 - SEV fixes: * Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while running an SEV-ES guest. * Clean up the recognition of emulation failures on SEV guests, when KVM would like to "skip" the instruction but it had already been partially emulated. This makes it possible to drop a hack that second guessed the (insufficient) information provided by the emulator, and just do the right thing. Documentation: * Various updates and fixes, mostly for x86 * MTRR and PAT fixes and optimizations: -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmVBZc0UHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroP1LQf+NgsmZ1lkGQlKdSdijoQ856w+k0or l2SV1wUwiEdFPSGK+RTUlHV5Y1ni1dn/CqCVIJZKEI3ZtZ1m9/4HKIRXvbMwFHIH hx+E4Lnf8YUjsGjKTLd531UKcpphztZavQ6pXLEwazkSkDEra+JIKtooI8uU+9/p bd/eF1V+13a8CHQf1iNztFJVxqBJbVlnPx4cZDRQQvewskIDGnVDtwbrwCUKGtzD eNSzhY7si6O2kdQNkuA8xPhg29dYX9XLaCK2K1l8xOUm8WipLdtF86GAKJ5BVuOL 6ek/2QCYjZ7a+coAZNfgSEUi8JmFHEqCo7cnKmWzPJp+2zyXsdudqAhT1g== =UIxm -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull kvm updates from Paolo Bonzini: "ARM: - Generalized infrastructure for 'writable' ID registers, effectively allowing userspace to opt-out of certain vCPU features for its guest - Optimization for vSGI injection, opportunistically compressing MPIDR to vCPU mapping into a table - Improvements to KVM's PMU emulation, allowing userspace to select the number of PMCs available to a VM - Guest support for memory operation instructions (FEAT_MOPS) - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing bugs and getting rid of useless code - Changes to the way the SMCCC filter is constructed, avoiding wasted memory allocations when not in use - Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing the overhead of errata mitigations - Miscellaneous kernel and selftest fixes LoongArch: - New architecture for kvm. The hardware uses the same model as x86, s390 and RISC-V, where guest/host mode is orthogonal to supervisor/user mode. The virtualization extensions are very similar to MIPS, therefore the code also has some similarities but it's been cleaned up to avoid some of the historical bogosities that are found in arch/mips. The kernel emulates MMU, timer and CSR accesses, while interrupt controllers are only emulated in userspace, at least for now. RISC-V: - Support for the Smstateen and Zicond extensions - Support for virtualizing senvcfg - Support for virtualized SBI debug console (DBCN) S390: - Nested page table management can be monitored through tracepoints and statistics x86: - Fix incorrect handling of VMX posted interrupt descriptor in KVM_SET_LAPIC, which could result in a dropped timer IRQ - Avoid WARN on systems with Intel IPI virtualization - Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs without forcing more common use cases to eat the extra memory overhead. - Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and SBPB, aka Selective Branch Predictor Barrier). - Fix a bug where restoring a vCPU snapshot that was taken within 1 second of creating the original vCPU would cause KVM to try to synchronize the vCPU's TSC and thus clobber the correct TSC being set by userspace. - Compute guest wall clock using a single TSC read to avoid generating an inaccurate time, e.g. if the vCPU is preempted between multiple TSC reads. - "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which complain about a "Firmware Bug" if the bit isn't set for select F/M/S combos. Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to appease Windows Server 2022. - Don't apply side effects to Hyper-V's synthetic timer on writes from userspace to fix an issue where the auto-enable behavior can trigger spurious interrupts, i.e. do auto-enabling only for guest writes. - Remove an unnecessary kick of all vCPUs when synchronizing the dirty log without PML enabled. - Advertise "support" for non-serializing FS/GS base MSR writes as appropriate. - Harden the fast page fault path to guard against encountering an invalid root when walking SPTEs. - Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n. - Use the fast path directly from the timer callback when delivering Xen timer events, instead of waiting for the next iteration of the run loop. This was not done so far because previously proposed code had races, but now care is taken to stop the hrtimer at critical points such as restarting the timer or saving the timer information for userspace. - Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future flag. - Optimize injection of PMU interrupts that are simultaneous with NMIs. - Usual handful of fixes for typos and other warts. x86 - MTRR/PAT fixes and optimizations: - Clean up code that deals with honoring guest MTRRs when the VM has non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled. - Zap EPT entries when non-coherent DMA assignment stops/start to prevent using stale entries with the wrong memtype. - Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y This was done as a workaround for virtual machine BIOSes that did not bother to clear CR0.CD (because ancient KVM/QEMU did not bother to set it, in turn), and there's zero reason to extend the quirk to also ignore guest PAT. x86 - SEV fixes: - Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts SHUTDOWN while running an SEV-ES guest. - Clean up the recognition of emulation failures on SEV guests, when KVM would like to "skip" the instruction but it had already been partially emulated. This makes it possible to drop a hack that second guessed the (insufficient) information provided by the emulator, and just do the right thing. Documentation: - Various updates and fixes, mostly for x86 - MTRR and PAT fixes and optimizations" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (164 commits) KVM: selftests: Avoid using forced target for generating arm64 headers tools headers arm64: Fix references to top srcdir in Makefile KVM: arm64: Add tracepoint for MMIO accesses where ISV==0 KVM: arm64: selftest: Perform ISB before reading PAR_EL1 KVM: arm64: selftest: Add the missing .guest_prepare() KVM: arm64: Always invalidate TLB for stage-2 permission faults KVM: x86: Service NMI requests after PMI requests in VM-Enter path KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs KVM: arm64: Refine _EL2 system register list that require trap reinjection arm64: Add missing _EL2 encodings arm64: Add missing _EL12 encodings KVM: selftests: aarch64: vPMU test for validating user accesses KVM: selftests: aarch64: vPMU register test for unimplemented counters KVM: selftests: aarch64: vPMU register test for implemented counters KVM: selftests: aarch64: Introduce vpmu_counter_access test tools: Import arm_pmuv3.h KVM: arm64: PMU: Allow userspace to limit PMCR_EL0.N for the guest KVM: arm64: Sanitize PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} before first run KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} ...	2023-11-02 15:45:15 -10:00
Linus Torvalds	1e0c505e13	asm-generic updates for v6.7 ... The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmVC40IACgkQYKtH/8kJ Uidhmw/9EX+aWSXGoObJ3fngaNSMw+PmrEuP8qEKBHxfKHcCdX3hc451Oh4GlhaQ tru91pPwgNvN2/rfoKusxT+V4PemGIzfNni/04rp+P0kvmdw5otQ2yNhsQNsfVmq XGWvkxF4P2GO6bkjjfR/1dDq7GtlyXtwwPDKeLbYb6TnJOZjtx+EAN27kkfSn1Ms R4Sa3zJ+DfHUmHL5S9g+7UD/CZ5GfKNmIskI4Mz5GsfoUz/0iiU+Bge/9sdcdSJQ kmbLy5YnVzfooLZ3TQmBFsO3iAMWb0s/mDdtyhqhTVmTUshLolkPYyKnPFvdupyv shXcpEST2XJNeaDRnL2K4zSCdxdbnCZHDpjfl9wfioBg7I8NfhXKpf1jYZHH1de4 LXq8ndEFEOVQw/zSpYWfQq1sux8Jiqr+UK/ukbVeFWiGGIUs91gEWtPAf8T0AZo9 ujkJvaWGl98O1g5wmBu0/dAR6QcFJMDfVwbmlIFpU8O+MEaz6X8mM+O5/T0IyTcD eMbAUjj4uYcU7ihKzHEv/0SS9Of38kzff67CLN5k8wOP/9NlaGZ78o1bVle9b52A BdhrsAefFiWHp1jT6Y9Rg4HOO/TguQ9e6EWSKOYFulsiLH9LEFaB9RwZLeLytV0W vlAgY9rUW77g1OJcb7DoNv33nRFuxsKqsnz3DEIXtgozo9CzbYI= =H1vH -----END PGP SIGNATURE----- Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull ia64 removal and asm-generic updates from Arnd Bergmann: - The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. - The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. * tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: hexagon: Remove unusable symbols from the ptrace.h uapi asm-generic: Fix spelling of architecture arch: Reserve map_shadow_stack() syscall number for all architectures syscalls: Cleanup references to sys_lookup_dcookie() Documentation: Drop or replace remaining mentions of IA64 lib/raid6: Drop IA64 support Documentation: Drop IA64 from feature descriptions kernel: Drop IA64 support from sig_fault handlers arch: Remove Itanium (IA-64) architecture	2023-11-01 15:28:33 -10:00
Linus Torvalds	f5277ad1e9	for-6.7/io_uring-sockopt-2023-10-30 ... -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmU/vdwQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpr2rD/0astIsj/AACVSPzHARg9lnhkIvUeweMSSl CjifLTzK3a9E3R2IrC4sflObUKIEL3fste0Lva141eNULZvBJ6cQJDvY7Bp72Bkc CTPEwEQiwDJKLhTzQh3gY0H0+nFMWwEm1uc4dyeNAft/R9bPP/qOq62ttCoCp9+S 1UoFmTlJE3bhejyS7fytoGZvKqhkpdR7rtbR4ya7CXWPoAG+v9amo8fputbxm0dj WECpKdd65JHWwYV4rbPA69T7jZ9V0oUsLen9RJ9BmjMLOFggHYqQdvEwG0Htirhw t5uaXqSvc8pXsJhKXMS3tXCrLNtBha5nlWHBpSE+6ovcmKiRzFjUaRXkRbcIrOAx ljIm0HHto1+xv0pDrNl3/lIjv5dpNOEauqqgMeYytQJIHa0JpSWbYzvjwQ8EZXQv WWDiRfH5Z0/3BsFdOCVqd8mTt4Pbksp2VFcxGkojRtSqSr4CML3mPZSmqGcs3nE6 Fc16XXw7oLEWoF1tQYMP6KG0cVLem4on28c8CcVMJ/pRvcun3jBCif2gmMHJkWyA a6Uq116amqQ61f1p+EQ3ChqyTA5uALrXPmovu6Ne3Y/btW5yG4+Vu7AsPLjPHdFN oGHjOPV77XQzEqzUWRXmXPecZ+QifkcCV/8kbqtEHQqk5n+HUKQZmpC8+014ms3V Af6LYI/vYg== =sk8+ -----END PGP SIGNATURE----- Merge tag 'for-6.7/io_uring-sockopt-2023-10-30' of git://git.kernel.dk/linux Pull io_uring {get,set}sockopt support from Jens Axboe: "This adds support for using getsockopt and setsockopt via io_uring. The main use cases for this is to enable use of direct descriptors, rather than first instantiating a normal file descriptor, doing the option tweaking needed, then turning it into a direct descriptor. With this support, we can avoid needing a regular file descriptor completely. The net and bpf bits have been signed off on their side" * tag 'for-6.7/io_uring-sockopt-2023-10-30' of git://git.kernel.dk/linux: selftests/bpf/sockopt: Add io_uring support io_uring/cmd: Introduce SOCKET_URING_OP_SETSOCKOPT io_uring/cmd: Introduce SOCKET_URING_OP_GETSOCKOPT io_uring/cmd: return -EOPNOTSUPP if net is disabled selftests/net: Extract uring helpers to be reusable tools headers: Grab copy of io_uring.h io_uring/cmd: Pass compat mode in issue_flags net/socket: Break down __sys_getsockopt net/socket: Break down __sys_setsockopt bpf: Add sockptr support for setsockopt bpf: Add sockptr support for getsockopt	2023-11-01 11:16:34 -10:00
Paolo Bonzini	45b890f768	KVM/arm64 updates for 6.7 ... - Generalized infrastructure for 'writable' ID registers, effectively allowing userspace to opt-out of certain vCPU features for its guest - Optimization for vSGI injection, opportunistically compressing MPIDR to vCPU mapping into a table - Improvements to KVM's PMU emulation, allowing userspace to select the number of PMCs available to a VM - Guest support for memory operation instructions (FEAT_MOPS) - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing bugs and getting rid of useless code - Changes to the way the SMCCC filter is constructed, avoiding wasted memory allocations when not in use - Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing the overhead of errata mitigations - Miscellaneous kernel and selftest fixes -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSNXHjWXuzMZutrKNKivnWIJHzdFgUCZUFJRgAKCRCivnWIJHzd FtgYAP9cMsc1Mhlw3jNQnTc6q0cbTulD/SoEDPUat1dXMqjs+gEAnskwQTrTX834 fgGQeCAyp7Gmar+KeP64H0xm8kPSpAw= =R4M7 -----END PGP SIGNATURE----- Merge tag 'kvmarm-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for 6.7 - Generalized infrastructure for 'writable' ID registers, effectively allowing userspace to opt-out of certain vCPU features for its guest - Optimization for vSGI injection, opportunistically compressing MPIDR to vCPU mapping into a table - Improvements to KVM's PMU emulation, allowing userspace to select the number of PMCs available to a VM - Guest support for memory operation instructions (FEAT_MOPS) - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing bugs and getting rid of useless code - Changes to the way the SMCCC filter is constructed, avoiding wasted memory allocations when not in use - Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing the overhead of errata mitigations - Miscellaneous kernel and selftest fixes	2023-10-31 16:37:07 -04:00
Linus Torvalds	89ed67ef12	Networking changes for 6.7. ... Core & protocols ---------------- - Support usec resolution of TCP timestamps, enabled selectively by a route attribute. - Defer regular TCP ACK while processing socket backlog, try to send a cumulative ACK at the end. Increase single TCP flow performance on a 200Gbit NIC by 20% (100Gbit -> 120Gbit). - The Fair Queuing (FQ) packet scheduler: - add built-in 3 band prio / WRR scheduling - support bypass if the qdisc is mostly idle (5% speed up for TCP RR) - improve inactive flow reporting - optimize the layout of structures for better cache locality - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern replacement for the old MD5 option. - Add more retransmission timeout (RTO) related statistics to TCP_INFO. - Support sending fragmented skbs over vsock sockets. - Make sure we send SIGPIPE for vsock sockets if socket was shutdown(). - Add sysctl for ignoring lower limit on lifetime in Router Advertisement PIO, based on an in-progress IETF draft. - Add sysctl to control activation of TCP ping-pong mode. - Add sysctl to make connection timeout in MPTCP configurable. - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps limit the number of wakeups. - Support netlink GET for MDB (multicast forwarding), allowing user space to request a single MDB entry instead of dumping the entire table. - Support selective FDB flushing in the VXLAN tunnel driver. - Allow limiting learned FDB entries in bridges, prevent OOM attacks. - Allow controlling via configfs netconsole targets which were created via the kernel cmdline at boot, rather than via configfs at runtime. - Support multiple PTP timestamp event queue readers with different filters. - MCTP over I3C. BPF --- - Add new veth-like netdevice where BPF program defines the logic of the xmit routine. It can operate in L3 and L2 mode. - Support exceptions - allow asserting conditions which should never be true but are hard for the verifier to infer. With some extra flexibility around handling of the exit / failure. https://lwn.net/Articles/938435/ - Add support for local per-cpu kptr, allow allocating and storing per-cpu objects in maps. Access to those objects operates on the value for the current CPU. This allows to deprecate local one-off implementations of per-CPU storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps. - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is for systemd to re-implement the LogNamespace feature which allows running multiple instances of systemd-journald to process the logs of different services. - Enable open-coded task_vma iteration, after maple tree conversion made it hard to directly walk VMAs in tracing programs. - Add open-coded task, css_task and css iterator support. One of the use cases is customizable OOM victim selection via BPF. - Allow source address selection with bpf_*_fib_lookup(). - Add ability to pin BPF timer to the current CPU. - Prevent creation of infinite loops by combining tail calls and fentry/fexit programs. - Add missed stats for kprobes to retrieve the number of missed kprobe executions and subsequent executions of BPF programs. - Inherit system settings for CPU security mitigations. - Add BPF v4 CPU instruction support for arm32 and s390x. Changes to common code ---------------------- - overflow: add DEFINE_FLEX() for on-stack definition of structs with flexible array members. - Process doc update with more guidance for reviewers. Driver API ---------- - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy mutex in most places and remove a lot of smaller locks. - Create a common DPLL configuration API. Allow configuring and querying state of PLL circuits used for clock syntonization, in network time distribution. - Unify fragmented and full page allocation APIs in page pool code. Let drivers be ignorant of PAGE_SIZE. - Rework PHY state machine to avoid races with calls to phy_stop(). - Notify DSA drivers of MAC address changes on user ports, improve correctness of offloads which depend on matching port MAC addresses. - Allow antenna control on injected WiFi frames. - Reduce the number of variants of napi_schedule(). - Simplify error handling when composing devlink health messages. Misc ---- - A lot of KCSAN data race "fixes", from Eric. - A lot of __counted_by() annotations, from Kees. - A lot of strncpy -> strscpy and printf format fixes. - Replace master/slave terminology with conduit/user in DSA drivers. - Handful of KUnit tests for netdev and WiFi core. Removed ------- - AppleTalk COPS. - AppleTalk ipddp. - TI AR7 CPMAC Ethernet driver. Drivers ------- - Ethernet high-speed NICs: - Intel (100G, ice, idpf): - add a driver for the Intel E2000 IPUs - make CRC/FCS stripping configurable - cross-timestamping for E823 devices - basic support for E830 devices - use aux-bus for managing client drivers - i40e: report firmware versions via devlink - nVidia/Mellanox: - support 4-port NICs - increase max number of channels to 256 - optimize / parallelize SF creation flow - Broadcom (bnxt): - enhance NIC temperature reporting - support PAM4 speeds and lane configuration - Marvell OcteonTX2: - PTP pulse-per-second output support - enable hardware timestamping for VFs - Solarflare/AMD: - conntrack NAT offload and offload for tunnels - Wangxun (ngbe/txgbe): - expose HW statistics - Pensando/AMD: - support PCI level reset - narrow down the condition under which skbs are linearized - Netronome/Corigine (nfp): - support CHACHA20-POLY1305 crypto in IPsec offload - Ethernet NICs embedded, slower, virtual: - Synopsys (stmmac): - add Loongson-1 SoC support - enable use of HW queues with no offload capabilities - enable PPS input support on all 5 channels - increase TX coalesce timer to 5ms - RealTek USB (r8152): improve efficiency of Rx by using GRO frags - xen: support SW packet timestamping - add drivers for implementations based on TI's PRUSS (AM64x EVM) - nVidia/Mellanox Ethernet datacenter switches: - avoid poor HW resource use on Spectrum-4 by better block selection for IPv6 multicast forwarding and ordering of blocks in ACL region - Ethernet embedded switches: - Microchip: - support configuring the drive strength for EMI compliance - ksz9477: partial ACL support - ksz9477: HSR offload - ksz9477: Wake on LAN - Realtek: - rtl8366rb: respect device tree config of the CPU port - Ethernet PHYs: - support Broadcom BCM5221 PHYs - TI dp83867: support hardware LED blinking - CAN: - add support for Linux-PHY based CAN transceivers - at91_can: clean up and use rx-offload helpers - WiFi: - MediaTek (mt76): - new sub-driver for mt7925 USB/PCIe devices - HW wireless <> Ethernet bridging in MT7988 chips - mt7603/mt7628 stability improvements - Qualcomm (ath12k): - WCN7850: - enable 320 MHz channels in 6 GHz band - hardware rfkill support - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to make scan faster - read board data variant name from SMBIOS - QCN9274: mesh support - RealTek (rtw89): - TDMA-based multi-channel concurrency (MCC) - Silicon Labs (wfx): - Remain-On-Channel (ROC) support - Bluetooth: - ISO: many improvements for broadcast support - mark BCM4378/BCM4387 as BROKEN_LE_CODED - add support for QCA2066 - btmtksdio: enable Bluetooth wakeup from suspend Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmU8XsYACgkQMUZtbf5S Irv19RAAnud/24OOF5XMEJkIcYlnfqximh4XO6PujRSYkSkOUJdZTF6iJPgf3pSP YpwoHYbYKHYfeOf8+3bTNESiQNSnoVmvmvwiS6/7lZ3behHUrGLQzW9Htc3EZyWH 2h6QkDZ5OOjfg0bwYSfp3vXkmMH2k8WE9Y0NvCkhcohqZi13Rmp14RnyPmNb2d1V yZRYDMSM133KqE6gnBr1Ct65IEvnKeGlCUN2mTGqOJgdn6DZMsyxvtt0y4rmN7Ab 41+CgPU5SfxfbYpW+Dl2HJpgfte3WrC57KC6AM0PAPJzPmQWgeB/m9mjz/apj6Bg bhsEIo7FdvbCnQm3yWPhK2OgCAcSwLr8jfGMU+Q+W4VnL5SRRR3Rm0zjsze+kHNP OfqJgxzl3DpvoJqVBy1h5FGcZt0XHwhksm4cTxWqIahsF+veY0ECBXbuBBQx9XTF Y7INfI8ulg7wISJs+CJfIClYkgOibTw2u8taBS5ikbtgxNqp5D4QqODn7UefQap1 PR/IDYODF+zRgmMJLeBqSa6fij6BkfOEDiOWak5kggBoZdtbtmeKI6tzze06CNdW lWv1WEhRufxnwK+IuWsEkjhiMbs2WGLvkJ5JbgQV9BfqHfIfiqBCrcWtT/WbQnGt lmU46CXh1t/FZEqbmK9h+8vsIIfrcDl6jb5npEiKPRG00vDKRTM= =46nS -----END PGP SIGNATURE----- Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core & protocols: - Support usec resolution of TCP timestamps, enabled selectively by a route attribute. - Defer regular TCP ACK while processing socket backlog, try to send a cumulative ACK at the end. Increase single TCP flow performance on a 200Gbit NIC by 20% (100Gbit -> 120Gbit). - The Fair Queuing (FQ) packet scheduler: - add built-in 3 band prio / WRR scheduling - support bypass if the qdisc is mostly idle (5% speed up for TCP RR) - improve inactive flow reporting - optimize the layout of structures for better cache locality - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern replacement for the old MD5 option. - Add more retransmission timeout (RTO) related statistics to TCP_INFO. - Support sending fragmented skbs over vsock sockets. - Make sure we send SIGPIPE for vsock sockets if socket was shutdown(). - Add sysctl for ignoring lower limit on lifetime in Router Advertisement PIO, based on an in-progress IETF draft. - Add sysctl to control activation of TCP ping-pong mode. - Add sysctl to make connection timeout in MPTCP configurable. - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps limit the number of wakeups. - Support netlink GET for MDB (multicast forwarding), allowing user space to request a single MDB entry instead of dumping the entire table. - Support selective FDB flushing in the VXLAN tunnel driver. - Allow limiting learned FDB entries in bridges, prevent OOM attacks. - Allow controlling via configfs netconsole targets which were created via the kernel cmdline at boot, rather than via configfs at runtime. - Support multiple PTP timestamp event queue readers with different filters. - MCTP over I3C. BPF: - Add new veth-like netdevice where BPF program defines the logic of the xmit routine. It can operate in L3 and L2 mode. - Support exceptions - allow asserting conditions which should never be true but are hard for the verifier to infer. With some extra flexibility around handling of the exit / failure: https://lwn.net/Articles/938435/ - Add support for local per-cpu kptr, allow allocating and storing per-cpu objects in maps. Access to those objects operates on the value for the current CPU. This allows to deprecate local one-off implementations of per-CPU storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps. - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is for systemd to re-implement the LogNamespace feature which allows running multiple instances of systemd-journald to process the logs of different services. - Enable open-coded task_vma iteration, after maple tree conversion made it hard to directly walk VMAs in tracing programs. - Add open-coded task, css_task and css iterator support. One of the use cases is customizable OOM victim selection via BPF. - Allow source address selection with bpf_*_fib_lookup(). - Add ability to pin BPF timer to the current CPU. - Prevent creation of infinite loops by combining tail calls and fentry/fexit programs. - Add missed stats for kprobes to retrieve the number of missed kprobe executions and subsequent executions of BPF programs. - Inherit system settings for CPU security mitigations. - Add BPF v4 CPU instruction support for arm32 and s390x. Changes to common code: - overflow: add DEFINE_FLEX() for on-stack definition of structs with flexible array members. - Process doc update with more guidance for reviewers. Driver API: - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy mutex in most places and remove a lot of smaller locks. - Create a common DPLL configuration API. Allow configuring and querying state of PLL circuits used for clock syntonization, in network time distribution. - Unify fragmented and full page allocation APIs in page pool code. Let drivers be ignorant of PAGE_SIZE. - Rework PHY state machine to avoid races with calls to phy_stop(). - Notify DSA drivers of MAC address changes on user ports, improve correctness of offloads which depend on matching port MAC addresses. - Allow antenna control on injected WiFi frames. - Reduce the number of variants of napi_schedule(). - Simplify error handling when composing devlink health messages. Misc: - A lot of KCSAN data race "fixes", from Eric. - A lot of __counted_by() annotations, from Kees. - A lot of strncpy -> strscpy and printf format fixes. - Replace master/slave terminology with conduit/user in DSA drivers. - Handful of KUnit tests for netdev and WiFi core. Removed: - AppleTalk COPS. - AppleTalk ipddp. - TI AR7 CPMAC Ethernet driver. Drivers: - Ethernet high-speed NICs: - Intel (100G, ice, idpf): - add a driver for the Intel E2000 IPUs - make CRC/FCS stripping configurable - cross-timestamping for E823 devices - basic support for E830 devices - use aux-bus for managing client drivers - i40e: report firmware versions via devlink - nVidia/Mellanox: - support 4-port NICs - increase max number of channels to 256 - optimize / parallelize SF creation flow - Broadcom (bnxt): - enhance NIC temperature reporting - support PAM4 speeds and lane configuration - Marvell OcteonTX2: - PTP pulse-per-second output support - enable hardware timestamping for VFs - Solarflare/AMD: - conntrack NAT offload and offload for tunnels - Wangxun (ngbe/txgbe): - expose HW statistics - Pensando/AMD: - support PCI level reset - narrow down the condition under which skbs are linearized - Netronome/Corigine (nfp): - support CHACHA20-POLY1305 crypto in IPsec offload - Ethernet NICs embedded, slower, virtual: - Synopsys (stmmac): - add Loongson-1 SoC support - enable use of HW queues with no offload capabilities - enable PPS input support on all 5 channels - increase TX coalesce timer to 5ms - RealTek USB (r8152): improve efficiency of Rx by using GRO frags - xen: support SW packet timestamping - add drivers for implementations based on TI's PRUSS (AM64x EVM) - nVidia/Mellanox Ethernet datacenter switches: - avoid poor HW resource use on Spectrum-4 by better block selection for IPv6 multicast forwarding and ordering of blocks in ACL region - Ethernet embedded switches: - Microchip: - support configuring the drive strength for EMI compliance - ksz9477: partial ACL support - ksz9477: HSR offload - ksz9477: Wake on LAN - Realtek: - rtl8366rb: respect device tree config of the CPU port - Ethernet PHYs: - support Broadcom BCM5221 PHYs - TI dp83867: support hardware LED blinking - CAN: - add support for Linux-PHY based CAN transceivers - at91_can: clean up and use rx-offload helpers - WiFi: - MediaTek (mt76): - new sub-driver for mt7925 USB/PCIe devices - HW wireless <> Ethernet bridging in MT7988 chips - mt7603/mt7628 stability improvements - Qualcomm (ath12k): - WCN7850: - enable 320 MHz channels in 6 GHz band - hardware rfkill support - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to make scan faster - read board data variant name from SMBIOS - QCN9274: mesh support - RealTek (rtw89): - TDMA-based multi-channel concurrency (MCC) - Silicon Labs (wfx): - Remain-On-Channel (ROC) support - Bluetooth: - ISO: many improvements for broadcast support - mark BCM4378/BCM4387 as BROKEN_LE_CODED - add support for QCA2066 - btmtksdio: enable Bluetooth wakeup from suspend" * tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits) net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos() net: mana: Use xdp_set_features_flag instead of direct assignment vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size() iavf: delete the iavf client interface iavf: add a common function for undoing the interrupt scheme iavf: use unregister_netdev iavf: rely on netdev's own registered state iavf: fix the waiting time for initial reset iavf: in iavf_down, don't queue watchdog_task if comms failed iavf: simplify mutex_trylock+sleep loops iavf: fix comments about old bit locks doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name tools: ynl: introduce option to process unknown attributes or types ipvlan: properly track tx_errors netdevsim: Block until all devices are released nfp: using napi_build_skb() to replace build_skb() net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy" net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN net: dsa: microchip: Refactor switch shutdown routine for WoL preparation ...	2023-10-31 05:10:11 -10:00
Linus Torvalds	c9049984f0	nolibc updates for v6.7 ... o Add stdarg.h header and a few additional system-call upgrades. o Add support for constructors and destructors. o Add tests to verify the ability to link multiple .o files against nolibc. o Numerous string-function optimizations and improvements. o Prevent redundant kernel relinks by avoiding embedding of initramfs into the kernel image. o Allow building i386 with multiarch compiler and make ppc64le use qemu-system-ppc64. o Miscellaneous fixups, including addition of -nostdinc for nolibc-test, avoiding -Wstringop-overflow warnings, and avoiding unused parameter warnings for ENOSYS fallbacks. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmU3A1ETHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jGyAEACRJX0s3JBvxRz5zKOA+l41sAN3DZ9z ygKIghnlNeDXQEFSqkZXb9Pa8BUPaVnFet3X5gUy8/0jcbXPPjIHU68U6EGQWk3f y5uTaxhTQkC+5gLyRhvq7FtjWxwYlg24D2e6ctrEw4pCt18PfkEhxof5PBhg/71K UVrZ55cRvXG7CTLSm5p1+jNkAOJuNfV+zD32QuV9V+7CwNLU088TZS9jGALFjKC0 UyE8E5uvmTQ6QQOl64Z6GNhpQual/2BslIGDVtb/+/Ii5Ch2nA8gV2YiC8cVPzpz r8yxqSEwfmiTNDPFH6PRIAx/optfgV/uScyyCNEiLwh/gFcag04BjC9GpWy5jKzA akchr0n+7yfJTpzzNmM38OAoaqMgzcPedxW2RDP5Eeb4cw0AKoy7bD3WeBRfmpgl tAgd8Gl7vpvSjecQSZfCY1hJ4F/qS2CfnObL4/EbHxIOfyLo0A6eEKLIf9PP02bT w2YJkZVSprKi8CXvIaV5KAhxXUGp07FJ5PHYLFFjinez/e6ksb7AH/ltrnAULMoV Ig3aQCYJ4oOFFVjH+h9+fFrqbI87Xo13UfO6PtkJU3gV749prqRIAg6FCTU0HkIz TSvy/PEFAxaXvNSGsSXikxQxvx3Fph9laoxQ1dSgEZSXKY43v1sfnXp1h5vGDdKH GPWaEtEBfNVUdg== =UKBQ -----END PGP SIGNATURE----- Merge tag 'nolibc.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull nolibc updates from Paul McKenney: - Add stdarg.h header and a few additional system-call upgrades - Add support for constructors and destructors - Add tests to verify the ability to link multiple .o files against nolibc - Numerous string-function optimizations and improvements - Prevent redundant kernel relinks by avoiding embedding of initramfs into the kernel image - Allow building i386 with multiarch compiler and make ppc64le use qemu-system-ppc64 - Miscellaneous fixups, including addition of -nostdinc for nolibc-test, avoiding -Wstringop-overflow warnings, and avoiding unused parameter warnings for ENOSYS fallbacks * tag 'nolibc.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: selftests/nolibc: add tests for multi-object linkage selftests/nolibc: use qemu-system-ppc64 for ppc64le tools/nolibc: add support for constructors and destructors tools/nolibc: drop test for getauxval(AT_PAGESZ) tools/nolibc: automatically detect necessity to use pselect6 tools/nolibc: don't define new syscall number tools/nolibc: avoid unused parameter warnings for ENOSYS fallbacks selftests/nolibc: allow building i386 with multiarch compiler selftests/nolibc: don't embed initramfs into kernel image selftests/nolibc: libc-test: avoid -Wstringop-overflow warnings tools/nolibc: string: Remove the `_nolibc_memcpy_up()` function tools/nolibc: string: Remove the `_nolibc_memcpy_down()` function tools/nolibc: x86-64: Use `rep stosb` for `memset()` tools/nolibc: x86-64: Use `rep movsb` for `memcpy()` and `memmove()` selftests/nolibc: use -nostdinc for nolibc-test tools/nolibc: add stdarg.h header	2023-10-30 17:52:45 -10:00
Jakub Kicinski	c6f9b7138b	bpf-next-for-netdev ... -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZTp12QAKCRDbK58LschI g8BrAQDifqp5liEEdXV8jdReBwJtqInjrL5tzy5LcyHUMQbTaAEA6Ph3Ct3B+3oA mFnIW/y6UJiJrby0Xz4+vV5BXI/5WQg= =pLCV -----END PGP SIGNATURE----- Merge tag 'for-netdev' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-10-26 We've added 51 non-merge commits during the last 10 day(s) which contain a total of 75 files changed, 5037 insertions(+), 200 deletions(-). The main changes are: 1) Add open-coded task, css_task and css iterator support. One of the use cases is customizable OOM victim selection via BPF, from Chuyi Zhou. 2) Fix BPF verifier's iterator convergence logic to use exact states comparison for convergence checks, from Eduard Zingerman, Andrii Nakryiko and Alexei Starovoitov. 3) Add BPF programmable net device where bpf_mprog defines the logic of its xmit routine. It can operate in L3 and L2 mode, from Daniel Borkmann and Nikolay Aleksandrov. 4) Batch of fixes for BPF per-CPU kptr and re-enable unit_size checking for global per-CPU allocator, from Hou Tao. 5) Fix libbpf which eagerly assumed that SHT_GNU_verdef ELF section was going to be present whenever a binary has SHT_GNU_versym section, from Andrii Nakryiko. 6) Fix BPF ringbuf correctness to fold smp_mb__before_atomic() into atomic_set_release(), from Paul E. McKenney. 7) Add a warning if NAPI callback missed xdp_do_flush() under CONFIG_DEBUG_NET which helps checking if drivers were missing the former, from Sebastian Andrzej Siewior. 8) Fix missed RCU read-lock in bpf_task_under_cgroup() which was throwing a warning under sleepable programs, from Yafang Shao. 9) Avoid unnecessary -EBUSY from htab_lock_bucket by disabling IRQ before checking map_locked, from Song Liu. 10) Make BPF CI linked_list failure test more robust, from Kumar Kartikeya Dwivedi. 11) Enable samples/bpf to be built as PIE in Fedora, from Viktor Malik. 12) Fix xsk starving when multiple xsk sockets were associated with a single xsk_buff_pool, from Albert Huang. 13) Clarify the signed modulo implementation for the BPF ISA standardization document that it uses truncated division, from Dave Thaler. 14) Improve BPF verifier's JEQ/JNE branch taken logic to also consider signed bounds knowledge, from Andrii Nakryiko. 15) Add an option to XDP selftests to use multi-buffer AF_XDP xdp_hw_metadata and mark used XDP programs as capable to use frags, from Larysa Zaremba. 16) Fix bpftool's BTF dumper wrt printing a pointer value and another one to fix struct_ops dump in an array, from Manu Bretelle. * tag 'for-netdev' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (51 commits) netkit: Remove explicit active/peer ptr initialization selftests/bpf: Fix selftests broken by mitigations=off samples/bpf: Allow building with custom bpftool samples/bpf: Fix passing LDFLAGS to libbpf samples/bpf: Allow building with custom CFLAGS/LDFLAGS bpf: Add more WARN_ON_ONCE checks for mismatched alloc and free selftests/bpf: Add selftests for netkit selftests/bpf: Add netlink helper library bpftool: Extend net dump with netkit progs bpftool: Implement link show support for netkit libbpf: Add link-based API for netkit tools: Sync if_link uapi header netkit, bpf: Add bpf programmable net device bpf: Improve JEQ/JNE branch taken logic bpf: Fold smp_mb__before_atomic() into atomic_set_release() bpf: Fix unnecessary -EBUSY from htab_lock_bucket xsk: Avoid starving the xsk further down the list bpf: print full verifier states on infinite loop detection selftests/bpf: test if state loops are detected in a tricky case bpf: correct loop detection for iterators convergence ... ==================== Link: https://lore.kernel.org/r/20231026150509.2824-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2023-10-26 20:02:41 -07:00
Jakub Kicinski	ec4c20ca09	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR. Conflicts: net/mac80211/rx.c 91535613b6 ("wifi: mac80211: don't drop all unprotected public action frames") 6c02fab724 ("wifi: mac80211: split ieee80211_drop_unencrypted_mgmt() return value") Adjacent changes: drivers/net/ethernet/apm/xgene/xgene_enet_main.c 61471264c0 ("net: ethernet: apm: Convert to platform remove callback returning void") d2ca43f306 ("net: xgene: Fix unused xgene_enet_of_match warning for !CONFIG_OF") net/vmw_vsock/virtio_transport.c 64c99d2d6a ("vsock/virtio: support to send non-linear skb") 53b08c4985 ("vsock/virtio: initialize the_virtio_vsock before using VQs") Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2023-10-26 13:46:28 -07:00
Daniel Borkmann	5c1b994de4	tools: Sync if_link uapi header ... Sync if_link uapi header to the latest version as we need the refresher in tooling for netkit device. Given it's been a while since the last sync and the diff is fairly big, it has been done as its own commit. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://lore.kernel.org/r/20231024214904.29825-3-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>	2023-10-24 16:06:43 -07:00
Daniel Borkmann	35dfaad718	netkit, bpf: Add bpf programmable net device ... This work adds a new, minimal BPF-programmable device called "netkit" (former PoC code-name "meta") we recently presented at LSF/MM/BPF. The core idea is that BPF programs are executed within the drivers xmit routine and therefore e.g. in case of containers/Pods moving BPF processing closer to the source. One of the goals was that in case of Pod egress traffic, this allows to move BPF programs from hostns tcx ingress into the device itself, providing earlier drop or forward mechanisms, for example, if the BPF program determines that the skb must be sent out of the node, then a redirect to the physical device can take place directly without going through per-CPU backlog queue. This helps to shift processing for such traffic from softirq to process context, leading to better scheduling decisions/performance (see measurements in the slides). In this initial version, the netkit device ships as a pair, but we plan to extend this further so it can also operate in single device mode. The pair comes with a primary and a peer device. Only the primary device, typically residing in hostns, can manage BPF programs for itself and its peer. The peer device is designated for containers/Pods and cannot attach/detach BPF programs. Upon the device creation, the user can set the default policy to 'pass' or 'drop' for the case when no BPF program is attached. Additionally, the device can be operated in L3 (default) or L2 mode. The management of BPF programs is done via bpf_mprog, so that multi-attach is supported right from the beginning with similar API and dependency controls as tcx. For details on the latter see commit 053c8e1f23 ("bpf: Add generic attach/detach/query API for multi-progs"). tc BPF compatibility is provided, so that existing programs can be easily migrated. Going forward, we plan to use netkit devices in Cilium as the main device type for connecting Pods. They will be operated in L3 mode in order to simplify a Pod's neighbor management and the peer will operate in default drop mode, so that no traffic is leaving between the time when a Pod is brought up by the CNI plugin and programs attached by the agent. Additionally, the programs we attach via tcx on the physical devices are using bpf_redirect_peer() for inbound traffic into netkit device, hence the latter is also supporting the ndo_get_peer_dev callback. Similarly, we use bpf_redirect_neigh() for the way out, pushing from netkit peer to phys device directly. Also, BIG TCP is supported on netkit device. For the follow-up work in single device mode, we plan to convert Cilium's cilium_host/_net devices into a single one. An extensive test suite for checking device operations and the BPF program and link management API comes as BPF selftests in this series. Co-developed-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Stanislav Fomichev <sdf@google.com> Acked-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://github.com/borkmann/iproute2/tree/pr/netkit Link: http://vger.kernel.org/bpfconf2023_material/tcx_meta_netdev_borkmann.pdf (24ff.) Link: https://lore.kernel.org/r/20231024214904.29825-2-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>	2023-10-24 16:06:03 -07:00
Raghavendra Rao Ananta	9f4b3273df	tools: Import arm_pmuv3.h ... Import kernel's include/linux/perf/arm_pmuv3.h, with the definition of PMEVN_SWITCH() additionally including an assert() for the 'default' case. The following patches will use macros defined in this header. Signed-off-by: Raghavendra Rao Ananta <rananta@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20231020214053.2144305-9-rananta@google.com Signed-off-by: Oliver Upton <oliver.upton@linux.dev>	2023-10-24 22:59:30 +00:00
Linus Torvalds	4f82870119	20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues ... or aren't considered necessary for earlier kernel versions. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZTfz/QAKCRDdBJ7gKXxA joMyAP99hLaLYeJbjlf+4tLJzhlpbVoFra1ieun2D+ZgFE78xQD/T4T3PYrZhYqD WdrxGT9fiKOykXM5pmQRH9Zr4EvJBA0= =Obbk -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-10-24-09-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues or aren't considered necessary for earlier kernel versions" * tag 'mm-hotfixes-stable-2023-10-24-09-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: maple_tree: add GFP_KERNEL to allocations in mas_expected_entries() selftests/mm: include mman header to access MREMAP_DONTUNMAP identifier mailmap: correct email aliasing for Oleksij Rempel mailmap: map Bartosz's old address to the current one mm/damon/sysfs: check DAMOS regions update progress from before_terminate() MAINTAINERS: Ondrej has moved kasan: disable kasan_non_canonical_hook() for HW tags kasan: print the original fault addr when access invalid shadow hugetlbfs: close race between MADV_DONTNEED and page fault hugetlbfs: extend hugetlb_vma_lock to private VMAs hugetlbfs: clear resv_map pointer if mmap fails mm: zswap: fix pool refcount bug around shrink_worker() mm/migrate: fix do_pages_move for compat pointers riscv: fix set_huge_pte_at() for NAPOT mappings when a swap entry is set riscv: handle VM_FAULT_[HWPOISON|HWPOISON_LARGE] faults instead of panicking mmap: fix error paths with dup_anon_vma() mmap: fix vma_iterator in error path of vma_merge() mm: fix vm_brk_flags() to not bail out while holding lock mm/mempolicy: fix set_mempolicy_home_node() previous VMA pointer mm/page_alloc: correct start page when guard page debug is enabled	2023-10-24 09:52:16 -10:00
Linus Torvalds	84186fcb83	Urgent pull request for nolibc into v6.6 ... This pull request contains the following fixes: o tools/nolibc: i386: Fix a stack misalign bug on _start o MAINTAINERS: nolibc: update tree location o tools/nolibc: mark start_c as weak to avoid linker errors -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmUtvC8THHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jMyED/9nsHjSYKUvzdn8kb8Xjr+OkUlx6DCl ITRqAScxl/Q+TTAKTSL508b/fVB56+h0ZmqOHeV0+askVI9c3G2wmLYCJ06P1bpI siy6pqBtcaDVvU38ielbAVYtAeSahj9Jro44gCwBD9OE2TPi4ehl7PMIsX1vG39a hmlbOSw3GG6jFHc5HkTlrOiOy1UB7oIPFI7qfH0XsKJ35vvmDSWPpiHIGwZyx3iv hInVPV4kEBREAXONjru7Ginn9dnxZXFqOwQeqW3ZfYudDUHeKzLMrtYsE6pqZxRP UEyFiI6bhr2fDPoXHGYSm63OrYAm3uZ0jsgC72ZjrLH2ISY0oCuGGf6HP5SjkRfP jPcqMD5h3K+aEHLN3XZV0v3FwelE3qjHVcDQhpu+nJCNDlWK3DNMOjwadynqDOHJ 5FIbusDk5h4rCgOh607zuRPBv0EmtLw3oXGzBzLl8bqRaj58iZP1Te+tnGZEYVMj YydEqXPlKWNaSeBL82gyCpWneYT+vdMjJdbl9b/EKXQxogYLFx4yC4z3h+7K7G56 InDXbxBu0BIMYMgJTWn7nsBgdjenho4PUrper3v6VMr6TKuXuEzmhpqgovaHLM1g ITmdl/+ExPBUBI8u2s1qqLIdEFe5SXkOhFpYnC1E7RsS+GRCho9XCmtfcaPWfiU5 KcFVXKBlIJ4cNQ== =PDcP -----END PGP SIGNATURE----- Merge tag 'urgent/nolibc.2023.10.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull nolibc fixes from Paul McKenney: - tools/nolibc: i386: Fix a stack misalign bug on _start - MAINTAINERS: nolibc: update tree location - tools/nolibc: mark start_c as weak to avoid linker errors * tag 'urgent/nolibc.2023.10.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: tools/nolibc: mark start_c as weak MAINTAINERS: nolibc: update tree location tools/nolibc: i386: Fix a stack misalign bug on _start	2023-10-23 14:19:11 -10:00
Breno Leitao	ba6e0e5cb5	selftests/net: Extract uring helpers to be reusable ... Instead of defining basic io_uring functions in the test case, move them to a common directory, so, other tests can use them. This simplify the test code and reuse the common liburing infrastructure. This is basically a copy of what we have in io_uring_zerocopy_tx with some minor improvements to make checkpatch happy. A follow-up test will use the same helpers in a BPF sockopt test. Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://lore.kernel.org/r/20231016134750.1381153-8-leitao@debian.org Signed-off-by: Jens Axboe <axboe@kernel.dk>	2023-10-19 16:42:03 -06:00
Breno Leitao	7746a6adfc	tools headers: Grab copy of io_uring.h ... This file will be used by mini_uring.h and allow tests to run without the need of installing liburing to run the tests. This is needed to run io_uring tests in BPF, such as (tools/testing/selftests/bpf/prog_tests/sockopt.c). Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://lore.kernel.org/r/20231016134750.1381153-7-leitao@debian.org Signed-off-by: Jens Axboe <axboe@kernel.dk>	2023-10-19 16:42:03 -06:00
David Laight	598f0ac150	compiler.h: move __is_constexpr() to compiler.h ... Prior to f747e6667e __is_constexpr() was in its only user minmax.h. That commit moved it to const.h - but that file just defines ULL(x) and UL(x) so that constants can be defined for .S and .c files. So apart from the word 'const' it wasn't really a good location. Instead move the definition to compiler.h just before the similar is_signed_type() and is_unsigned_type(). This may not be a good long-term home, but the three definitions belong together. Link: https://lkml.kernel.org/r/2a6680bbe2e84459816a113730426782@AcuMS.aculab.com Signed-off-by: David Laight <david.laight@aculab.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2023-10-18 14:43:22 -07:00
Muhammad Usama Anjum	b58aa0f4fe	tools headers UAPI: update linux/fs.h with the kernel sources ... New IOCTL and macros has been added in the kernel sources. Update the tools header file as well. Link: https://lkml.kernel.org/r/20230821141518.870589-5-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrei Vagin <avagin@gmail.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Miroslaw <emmir@google.com> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Nadav Amit <namit@vmware.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Paul Gofman <pgofman@codeweavers.com> Cc: Peter Xu <peterx@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Yun Zhou <yun.zhou@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2023-10-18 14:34:13 -07:00
Andrew Morton	5ef8f1b2b4	Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes.	2023-10-18 14:32:58 -07:00
Liam R. Howlett	099d7439ce	maple_tree: add GFP_KERNEL to allocations in mas_expected_entries() ... Users complained about OOM errors during fork without triggering compaction. This can be fixed by modifying the flags used in mas_expected_entries() so that the compaction will be triggered in low memory situations. Since mas_expected_entries() is only used during fork, the extra argument does not need to be passed through. Additionally, the two test_maple_tree test cases and one benchmark test were altered to use the correct locking type so that allocations would not trigger sleeping and thus fail. Testing was completed with lockdep atomic sleep detection. The additional locking change requires rwsem support additions to the tools/ directory through the use of pthreads pthread_rwlock_t. With this change test_maple_tree works in userspace, as a module, and in-kernel. Users may notice that the system gave up early on attempting to start new processes instead of attempting to reclaim memory. Link: https://lkml.kernel.org/r/20230915093243epcms1p46fa00bbac1ab7b7dca94acb66c44c456@epcms1p4 Link: https://lkml.kernel.org/r/20231012155233.2272446-1-Liam.Howlett@oracle.com Fixes: 54a611b605 ("Maple Tree: add new data structure") Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: <jason.sim@samsung.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2023-10-18 12:12:41 -07:00
Adrian Hunter	a91c987254	perf tools: Add get_unaligned_leNN() ... Add get_unaligned_le16(), get_unaligned_le32 and get_unaligned_le64, same as include/asm-generic/unaligned.h. And add include/asm-generic/unaligned.h to check-headers.sh bringing tools/include/asm-generic/unaligned.h up to date so that the kernel and tools versions match. Use diagnostic pragmas to ignore -Wpacked used by perf build. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20231005190451.175568-2-adrian.hunter@intel.com Link: https://lore.kernel.org/r/20231010142234.20061-1-adrian.hunter@intel.com [ squashed check-header.sh addition ] Signed-off-by: Namhyung Kim <namhyung@kernel.org>	2023-10-17 12:40:02 -07:00
Jakub Kicinski	a3c2dd9648	bpf-next-for-netdev ... -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZS1d4wAKCRDbK58LschI g4DSAP441CdKh8fd+wNKUSKHFbpCQ6EvocR6Nf+Sj2DFUx/w/QEA7mfju7Abqjc3 xwDEx0BuhrjMrjV5MmEpxc7lYl9XcQU= =vuWk -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-10-16 We've added 90 non-merge commits during the last 25 day(s) which contain a total of 120 files changed, 3519 insertions(+), 895 deletions(-). The main changes are: 1) Add missed stats for kprobes to retrieve the number of missed kprobe executions and subsequent executions of BPF programs, from Jiri Olsa. 2) Add cgroup BPF sockaddr hooks for unix sockets. The use case is for systemd to reimplement the LogNamespace feature which allows running multiple instances of systemd-journald to process the logs of different services, from Daan De Meyer. 3) Implement BPF CPUv4 support for s390x BPF JIT, from Ilya Leoshkevich. 4) Improve BPF verifier log output for scalar registers to better disambiguate their internal state wrt defaults vs min/max values matching, from Andrii Nakryiko. 5) Extend the BPF fib lookup helpers for IPv4/IPv6 to support retrieving the source IP address with a new BPF_FIB_LOOKUP_SRC flag, from Martynas Pumputis. 6) Add support for open-coded task_vma iterator to help with symbolization for BPF-collected user stacks, from Dave Marchevsky. 7) Add libbpf getters for accessing individual BPF ring buffers which is useful for polling them individually, for example, from Martin Kelly. 8) Extend AF_XDP selftests to validate the SHARED_UMEM feature, from Tushar Vyavahare. 9) Improve BPF selftests cross-building support for riscv arch, from Björn Töpel. 10) Add the ability to pin a BPF timer to the same calling CPU, from David Vernet. 11) Fix libbpf's bpf_tracing.h macros for riscv to use the generic implementation of PT_REGS_SYSCALL_REGS() to access syscall arguments, from Alexandre Ghiti. 12) Extend libbpf to support symbol versioning for uprobes, from Hengqi Chen. 13) Fix bpftool's skeleton code generation to guarantee that ELF data is 8 byte aligned, from Ian Rogers. 14) Inherit system-wide cpu_mitigations_off() setting for Spectre v1/v4 security mitigations in BPF verifier, from Yafang Shao. 15) Annotate struct bpf_stack_map with __counted_by attribute to prepare BPF side for upcoming __counted_by compiler support, from Kees Cook. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (90 commits) bpf: Ensure proper register state printing for cond jumps bpf: Disambiguate SCALAR register state output in verifier logs selftests/bpf: Make align selftests more robust selftests/bpf: Improve missed_kprobe_recursion test robustness selftests/bpf: Improve percpu_alloc test robustness selftests/bpf: Add tests for open-coded task_vma iter bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Don't explicitly emit BTF for struct btf_iter_num bpf: Change syscall_nr type to int in struct syscall_tp_t net/bpf: Avoid unused "sin_addr_len" warning when CONFIG_CGROUP_BPF is not set bpf: Avoid unnecessary audit log for CPU security mitigations selftests/bpf: Add tests for cgroup unix socket address hooks selftests/bpf: Make sure mount directory exists documentation/bpf: Document cgroup unix socket address hooks bpftool: Add support for cgroup unix socket address hooks libbpf: Add support for cgroup unix socket address hooks bpf: Implement cgroup sockaddr hooks for unix sockets bpf: Add bpf_sock_addr_set_sun_path() to allow writing unix sockaddr from bpf bpf: Propagate modified uaddrlen from cgroup sockaddr programs ... ==================== Link: https://lore.kernel.org/r/20231016204803.30153-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2023-10-16 21:05:33 -07:00
Thomas Weißschuh	63aa531716	tools/nolibc: add support for constructors and destructors ... With the startup code moved to C, implementing support for constructors and deconstructors is fairly easy to implement. Examples for code size impact: text data bss dec hex filename 21837 104 88 22029 560d nolibc-test.before 22135 120 88 22343 5747 nolibc-test.after 21970 104 88 22162 5692 nolibc-test.after-only-crt.h-changes The sections are defined by [0]. [0] https://refspecs.linuxfoundation.org/elf/gabi4+/ch5.dynamic.html Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/lkml/20231007-nolibc-constructors-v2-1-ef84693efbc1@weissschuh.net/	2023-10-12 21:14:16 +02:00
Thomas Weißschuh	eaa8c9a8b4	tools/nolibc: automatically detect necessity to use pselect6 ... We can automatically detect if pselect6 is needed or not from the kernel headers. This removes the need to manually specify it. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20230917-nolibc-syscall-nr-v2-4-03863d509b9a@weissschuh.net	2023-10-12 21:14:13 +02:00
Thomas Weißschuh	e7b28f2516	tools/nolibc: don't define new syscall number ... All symbols created by nolibc are also visible to user code. Syscall constants are expected to come from the kernel headers and should not be made up by nolibc. Refactor the logic to avoid defining syscall numbers. Also the new code is easier to understand. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20230917-nolibc-syscall-nr-v2-3-03863d509b9a@weissschuh.net	2023-10-12 21:14:12 +02:00
Thomas Weißschuh	535b70c143	tools/nolibc: avoid unused parameter warnings for ENOSYS fallbacks ... The ENOSYS fallback code does not use its functions parameters. This can lead to compiler warnings about unused parameters. Explicitly avoid these warnings. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20230917-nolibc-syscall-nr-v2-2-03863d509b9a@weissschuh.net	2023-10-12 21:14:10 +02:00
Ammar Faizi	bc61614de0	tools/nolibc: string: Remove the _nolibc_memcpy_up() function ... This function is only called by memcpy(), there is no real reason to have this wrapper. Delete this function and move the code to memcpy() directly. Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>	2023-10-12 21:14:03 +02:00
Ammar Faizi	5dfc79b20e	tools/nolibc: string: Remove the _nolibc_memcpy_down() function ... This nolibc internal function is not used. Delete it. It was probably supposed to handle memmove(), but today the memmove() has its own implementation. Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>	2023-10-12 21:14:02 +02:00
Ammar Faizi	12108aa8c1	tools/nolibc: x86-64: Use rep stosb for memset() ... Simplify memset() on the x86-64 arch. The x86-64 arch has a 'rep stosb' instruction, which can perform memset() using only a single instruction, given: %al = value (just like the second argument of memset()) %rdi = destination %rcx = length Before this patch: ``` 00000000000010c9 <memset>: 10c9: 48 89 f8 mov %rdi,%rax 10cc: 48 85 d2 test %rdx,%rdx 10cf: 74 0e je 10df <memset+0x16> 10d1: 31 c9 xor %ecx,%ecx 10d3: 40 88 34 08 mov %sil,(%rax,%rcx,1) 10d7: 48 ff c1 inc %rcx 10da: 48 39 ca cmp %rcx,%rdx 10dd: 75 f4 jne 10d3 <memset+0xa> 10df: c3 ret ``` After this patch: ``` 0000000000001511 <memset>: 1511: 96 xchg %eax,%esi 1512: 48 89 d1 mov %rdx,%rcx 1515: 57 push %rdi 1516: f3 aa rep stos %al,%es:(%rdi) 1518: 58 pop %rax 1519: c3 ret ``` v2: - Use pushq %rdi / popq %rax (Alviro). - Use xchg %eax, %esi (Willy). Link: https://lore.kernel.org/lkml/ZO9e6h2jjVIMpBJP@1wt.eu Suggested-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> Suggested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>	2023-10-12 21:14:00 +02:00
Ammar Faizi	553845eebd	tools/nolibc: x86-64: Use rep movsb for memcpy() and memmove() ... Simplify memcpy() and memmove() on the x86-64 arch. The x86-64 arch has a 'rep movsb' instruction, which can perform memcpy() using only a single instruction, given: %rdi = destination %rsi = source %rcx = length Additionally, it can also handle the overlapping case by setting DF=1 (backward copy), which can be used as the memmove() implementation. Before this patch: ``` 00000000000010ab <memmove>: 10ab: 48 89 f8 mov %rdi,%rax 10ae: 31 c9 xor %ecx,%ecx 10b0: 48 39 f7 cmp %rsi,%rdi 10b3: 48 83 d1 ff adc $0xffffffffffffffff,%rcx 10b7: 48 85 d2 test %rdx,%rdx 10ba: 74 25 je 10e1 <memmove+0x36> 10bc: 48 83 c9 01 or $0x1,%rcx 10c0: 48 39 f0 cmp %rsi,%rax 10c3: 48 c7 c7 ff ff ff ff mov $0xffffffffffffffff,%rdi 10ca: 48 0f 43 fa cmovae %rdx,%rdi 10ce: 48 01 cf add %rcx,%rdi 10d1: 44 8a 04 3e mov (%rsi,%rdi,1),%r8b 10d5: 44 88 04 38 mov %r8b,(%rax,%rdi,1) 10d9: 48 01 cf add %rcx,%rdi 10dc: 48 ff ca dec %rdx 10df: 75 f0 jne 10d1 <memmove+0x26> 10e1: c3 ret 00000000000010e2 <memcpy>: 10e2: 48 89 f8 mov %rdi,%rax 10e5: 48 85 d2 test %rdx,%rdx 10e8: 74 12 je 10fc <memcpy+0x1a> 10ea: 31 c9 xor %ecx,%ecx 10ec: 40 8a 3c 0e mov (%rsi,%rcx,1),%dil 10f0: 40 88 3c 08 mov %dil,(%rax,%rcx,1) 10f4: 48 ff c1 inc %rcx 10f7: 48 39 ca cmp %rcx,%rdx 10fa: 75 f0 jne 10ec <memcpy+0xa> 10fc: c3 ret ``` After this patch: ``` // memmove is an alias for memcpy 000000000040133b <memcpy>: 40133b: 48 89 d1 mov %rdx,%rcx 40133e: 48 89 f8 mov %rdi,%rax 401341: 48 89 fa mov %rdi,%rdx 401344: 48 29 f2 sub %rsi,%rdx 401347: 48 39 ca cmp %rcx,%rdx 40134a: 72 03 jb 40134f <memcpy+0x14> 40134c: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 40134e: c3 ret 40134f: 48 8d 7c 0f ff lea -0x1(%rdi,%rcx,1),%rdi 401354: 48 8d 74 0e ff lea -0x1(%rsi,%rcx,1),%rsi 401359: fd std 40135a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) 40135c: fc cld 40135d: c3 ret ``` v3: - Make memmove as an alias for memcpy (Willy). - Make the forward copy the likely case (Alviro). v2: - Fix the broken memmove implementation (David). Link: https://lore.kernel.org/lkml/20230902062237.GA23141@1wt.eu Link: https://lore.kernel.org/lkml/5a821292d96a4dbc84c96ccdc6b5b666@AcuMS.aculab.com Suggested-by: David Laight <David.Laight@aculab.com> Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>	2023-10-12 21:13:56 +02:00
Thomas Weißschuh	b56a9492d0	tools/nolibc: add stdarg.h header ... This allows nolic to work with `-nostdinc` avoiding any reliance on system headers. The implementation has been lifted from musl libc 1.2.4. There is already an implementation of stdarg.h in include/linux/stdarg.h but that is GPL licensed and therefore not suitable for nolibc. The used compiler builtins have been validated to be at least available since GCC 4.1.2 and clang 3.0.0. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Willy Tarreau <w@1wt.eu>	2023-10-12 21:13:52 +02:00
Thomas Weißschuh	921992229b	tools/nolibc: mark start_c as weak ... Otherwise the different instances of _start_c from each compilation unit will lead to linker errors: /usr/bin/ld: /tmp/ccSNvRqs.o: in function `_start_c': nolibc-test-foo.c:(.text.nolibc_memset+0x9): multiple definition of `_start_c'; /tmp/ccG25101.o:nolibc-test.c:(.text+0x1ea3): first defined here Fixes: 1733675515 ("tools/nolibc: add new crt.h with _start_c") Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/lkml/20231012-nolibc-start_c-multiple-v1-1-fbfc73e0283f@weissschuh.net/ Link: https://lore.kernel.org/lkml/20231012-nolibc-linkage-test-v1-1-315e682768b4@weissschuh.net/ Acked-by: Willy Tarreau <w@1wt.eu>	2023-10-12 21:13:51 +02:00
Ammar Faizi	d873a364ef	tools/nolibc: i386: Fix a stack misalign bug on _start ... The ABI mandates that the %esp register must be a multiple of 16 when executing a 'call' instruction. Commit 2ab446336b ("tools/nolibc: i386: shrink _start with _start_c") simplified the _start function, but it didn't take care of the %esp alignment, causing SIGSEGV on SSE and AVX programs that use aligned move instruction (e.g., movdqa, movaps, and vmovdqa). The 'and $-16, %esp' aligns the %esp at a multiple of 16. Then 'push %eax' will subtract the %esp by 4; thus, it breaks the 16-byte alignment. Make sure the %esp is correctly aligned after the push by subtracting 12 before the push. Extra: Add 'add $12, %esp' before the 'and $-16, %esp' to avoid over-estimating for particular cases as suggested by Willy. A test program to validate the %esp alignment on _start can be found at: https://lore.kernel.org/lkml/ZOoindMFj1UKqo+s@biznet-home.integral.gnuweeb.org [ Thomas: trim Fixes tag commit id ] Cc: Zhangjin Wu <falcon@tinylab.org> Fixes: 2ab446336b ("tools/nolibc: i386: shrink _start with _start_c") Reported-by: Nicholas Rosenberg <inori@vnlx.org> Acked-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>	2023-10-12 21:10:37 +02:00
Daan De Meyer	859051dd16	bpf: Implement cgroup sockaddr hooks for unix sockets ... These hooks allows intercepting connect(), getsockname(), getpeername(), sendmsg() and recvmsg() for unix sockets. The unix socket hooks get write access to the address length because the address length is not fixed when dealing with unix sockets and needs to be modified when a unix socket address is modified by the hook. Because abstract socket unix addresses start with a NUL byte, we cannot recalculate the socket address in kernelspace after running the hook by calculating the length of the unix socket path using strlen(). These hooks can be used when users want to multiplex syscall to a single unix socket to multiple different processes behind the scenes by redirecting the connect() and other syscalls to process specific sockets. We do not implement support for intercepting bind() because when using bind() with unix sockets with a pathname address, this creates an inode in the filesystem which must be cleaned up. If we rewrite the address, the user might try to clean up the wrong file, leaking the socket in the filesystem where it is never cleaned up. Until we figure out a solution for this (and a use case for intercepting bind()), we opt to not allow rewriting the sockaddr in bind() calls. We also implement recvmsg() support for connected streams so that after a connect() that is modified by a sockaddr hook, any corresponding recmvsg() on the connected socket can also be modified to make the connected program think it is connected to the "intended" remote. Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Daan De Meyer <daan.j.demeyer@gmail.com> Link: https://lore.kernel.org/r/20231011185113.140426-5-daan.j.demeyer@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>	2023-10-11 17:27:47 -07:00
Martynas Pumputis	dab4e1f06c	bpf: Derive source IP addr via bpf_*_fib_lookup() ... Extend the bpf_fib_lookup() helper by making it to return the source IPv4/IPv6 address if the BPF_FIB_LOOKUP_SRC flag is set. For example, the following snippet can be used to derive the desired source IP address: struct bpf_fib_lookup p = { .ipv4_dst = ip4->daddr }; ret = bpf_skb_fib_lookup(skb, p, sizeof(p), BPF_FIB_LOOKUP_SRC | BPF_FIB_LOOKUP_SKIP_NEIGH); if (ret != BPF_FIB_LKUP_RET_SUCCESS) return TC_ACT_SHOT; /* the p.ipv4_src now contains the source address */ The inability to derive the proper source address may cause malfunctions in BPF-based dataplanes for hosts containing netdevs with more than one routable IP address or for multi-homed hosts. For example, Cilium implements packet masquerading in BPF. If an egressing netdev to which the Cilium's BPF prog is attached has multiple IP addresses, then only one [hardcoded] IP address can be used for masquerading. This breaks connectivity if any other IP address should have been selected instead, for example, when a public and private addresses are attached to the same egress interface. The change was tested with Cilium [1]. Nikolay Aleksandrov helped to figure out the IPv6 addr selection. [1]: https://github.com/cilium/cilium/pull/28283 Signed-off-by: Martynas Pumputis <m@lambda.lt> Link: https://lore.kernel.org/r/20231007081415.33502-2-m@lambda.lt Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>	2023-10-09 16:28:35 -07:00
David Vernet	d6247ecb6c	bpf: Add ability to pin bpf timer to calling CPU ... BPF supports creating high resolution timers using bpf_timer_* helper functions. Currently, only the BPF_F_TIMER_ABS flag is supported, which specifies that the timeout should be interpreted as absolute time. It would also be useful to be able to pin that timer to a core. For example, if you wanted to make a subset of cores run without timer interrupts, and only have the timer be invoked on a single core. This patch adds support for this with a new BPF_F_TIMER_CPU_PIN flag. When specified, the HRTIMER_MODE_PINNED flag is passed to hrtimer_start(). A subsequent patch will update selftests to validate. Signed-off-by: David Vernet <void@manifault.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <song@kernel.org> Acked-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/bpf/20231004162339.200702-2-void@manifault.com	2023-10-09 16:28:49 +02:00
Florent Revest	24e41bf8a6	mm: add a NO_INHERIT flag to the PR_SET_MDWE prctl ... This extends the current PR_SET_MDWE prctl arg with a bit to indicate that the process doesn't want MDWE protection to propagate to children. To implement this no-inherit mode, the tag in current->mm->flags must be absent from MMF_INIT_MASK. This means that the encoding for "MDWE but without inherit" is different in the prctl than in the mm flags. This leads to a bit of bit-mangling in the prctl implementation. Link: https://lkml.kernel.org/r/20230828150858.393570-6-revest@chromium.org Signed-off-by: Florent Revest <revest@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Alexey Izbyshev <izbyshev@ispras.ru> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Ayush Jain <ayush.jain3@amd.com> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Thelen <gthelen@google.com> Cc: Joey Gouly <joey.gouly@arm.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Szabolcs Nagy <Szabolcs.Nagy@arm.com> Cc: Topi Miettinen <toiwoton@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2023-10-06 14:44:11 -07:00
Florent Revest	0da668333f	mm: make PR_MDWE_REFUSE_EXEC_GAIN an unsigned long ... Defining a prctl flag as an int is a footgun because on a 64 bit machine and with a variadic implementation of prctl (like in musl and glibc), when used directly as a prctl argument, it can get casted to long with garbage upper bits which would result in unexpected behaviors. This patch changes the constant to an unsigned long to eliminate that possibilities. This does not break UAPI. I think that a stable backport would be "nice to have": to reduce the chances that users build binaries that could end up with garbage bits in their MDWE prctl arguments. We are not aware of anyone having yet encountered this corner case with MDWE prctls but a backport would reduce the likelihood it happens, since this sort of issues has happened with other prctls. But If this is perceived as a backporting burden, I suppose we could also live without a stable backport. Link: https://lkml.kernel.org/r/20230828150858.393570-5-revest@chromium.org Fixes: b507808ebc ("mm: implement memory-deny-write-execute as a prctl") Signed-off-by: Florent Revest <revest@chromium.org> Suggested-by: Alexey Izbyshev <izbyshev@ispras.ru> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Ayush Jain <ayush.jain3@amd.com> Cc: Greg Thelen <gthelen@google.com> Cc: Joey Gouly <joey.gouly@arm.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Szabolcs Nagy <Szabolcs.Nagy@arm.com> Cc: Topi Miettinen <toiwoton@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2023-10-06 14:44:11 -07:00
Jakub Kicinski	2606cf059c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR. No conflicts (or adjacent changes of note). Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2023-10-05 13:16:47 -07:00
Sohil Mehta	ccab211af3	syscalls: Cleanup references to sys_lookup_dcookie() ... commit 'be65de6b03aa ("fs: Remove dcookies support")' removed the syscall definition for lookup_dcookie. However, syscall tables still point to the old sys_lookup_dcookie() definition. Update syscall tables of all architectures to directly point to sys_ni_syscall() instead. Signed-off-by: Sohil Mehta <sohil.mehta@intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Namhyung Kim <namhyung@kernel.org> # for perf Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>	2023-10-03 19:51:37 +02:00
Linus Torvalds	5c519bc075	perf tools fixes for v6.6: 1st batch ... Build: - Update header files in the tools/**/include directory to sync with the kernel sources as usual. - Remove unused bpf-prologue files. While it's not strictly a fix, but the functionality was removed in this cycle so better to get rid of the code together. - Other minor build fixes. Misc: - Fix uninitialized memory access in PMU parsing code - Fix segfaults on software event Signed-off-by: Namhyung Kim <namhyung@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZRIFKAAKCRCMstVUGiXM g/pXAP9HLB2s+beBTK5iQU4/NfqmAVSl303QCoR9xLByo38vfAEAlLiRIh061pTi PRlXVuY9bUQPyCSYsiBHv/fmLqdQdwU= =ti6G -----END PGP SIGNATURE----- Merge tag 'perf-tools-fixes-for-v6.6-1-2023-09-25' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools fixes from Namhyung Kim: "Build: - Update header files in the tools/**/include directory to sync with the kernel sources as usual. - Remove unused bpf-prologue files. While it's not strictly a fix, but the functionality was removed in this cycle so better to get rid of the code together. - Other minor build fixes. Misc: - Fix uninitialized memory access in PMU parsing code - Fix segfaults on software event" * tag 'perf-tools-fixes-for-v6.6-1-2023-09-25' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: perf jevent: fix core dump on software events on s390 perf pmu: Ensure all alias variables are initialized perf jevents metric: Fix type of strcmp_cpuid_str perf trace: Avoid compile error wrt redefining bool perf bpf-prologue: Remove unused file tools headers UAPI: Update tools's copy of drm.h headers tools arch x86: Sync the msr-index.h copy with the kernel sources perf bench sched-seccomp-notify: Use the tools copy of seccomp.h UAPI tools headers UAPI: Copy seccomp.h to be able to build 'perf bench' in older systems tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack syscalls with the kernel sources perf tools: Update copy of libbpf's hashmap.c	2023-09-26 08:41:26 -07:00
Jiri Olsa	3acf8ace68	bpf: Add missed value to kprobe perf link info ... Add missed value to kprobe attached through perf link info to hold the stats of missed kprobe handler execution. The kprobe's missed counter gets incremented when kprobe handler is not executed due to another kprobe running on the same cpu. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230920213145.1941596-4-jolsa@kernel.org	2023-09-25 16:37:44 -07:00
Jiri Olsa	e2b2cd592a	bpf: Add missed value to kprobe_multi link info ... Add missed value to kprobe_multi link info to hold the stats of missed kprobe_multi probe. The missed counter gets incremented when fprobe fails the recursion check or there's no rethook available for return probe. In either case the attached bpf program is not executed. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Song Liu <song@kernel.org> Reviewed-by: Song Liu <song@kernel.org> Acked-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/bpf/20230920213145.1941596-3-jolsa@kernel.org	2023-09-25 16:37:44 -07:00
Paolo Abeni	e9cbc89067	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR. No conflicts. Signed-off-by: Paolo Abeni <pabeni@redhat.com>	2023-09-21 21:49:45 +02:00
Linus Torvalds	27bbf45eae	Networking fixes for 6.6-rc2, including fixes from netfilter and bpf ... Current release - regressions: - bpf: adjust size_index according to the value of KMALLOC_MIN_SIZE - netfilter: fix entries val in rule reset audit log - eth: stmmac: fix incorrect rxq|txq_stats reference Previous releases - regressions: - ipv4: fix null-deref in ipv4_link_failure - netfilter: - fix several GC related issues - fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP - eth: team: fix null-ptr-deref when team device type is changed - eth: i40e: fix VF VLAN offloading when port VLAN is configured - eth: ionic: fix 16bit math issue when PAGE_SIZE >= 64KB Previous releases - always broken: - core: fix ETH_P_1588 flow dissector - mptcp: fix several connection hang-up conditions - bpf: - avoid deadlock when using queue and stack maps from NMI - add override check to kprobe multi link attach - hsr: properly parse HSRv1 supervisor frames. - eth: igc: fix infinite initialization loop with early XDP redirect - eth: octeon_ep: fix tx dma unmap len values in SG - eth: hns3: fix GRE checksum offload issue Signed-off-by: Paolo Abeni <pabeni@redhat.com> -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmUMFG8SHHBhYmVuaUBy ZWRoYXQuY29tAAoJECkkeY3MjxOksHAP+QE2eNf5yxo86dIS+3RQnOQ8kFBnNbEn 04lrheGnzG7PpNnGoCoTZna+xYQPYVLgbmmip2/CFnQvnQIsKyLQfCui85sfV2V9 KjUeE/kTgeC+jUQOWNDyz3zDP/MPC2LmiK8Gwyggvm9vFYn5tVZXC36aPZBZ7Vok /DUW6iXyl31SeVGOOEKakcwn0GIYJSABhVFNsjrDe4tV+leUwvf8obAq3ZWxOGaU D94ez28lSXgfOSWfQQ/l1rHI/yC0fr8HYyWJ60dNG2uS3fNEqT8LyqZfAUK24kVz XbAGZa+GA7CDq3cVsU7vCWNWbB5fO+kXtmGOwPtuKtJQM5LPo4X77CuSHlpzdyvq TuW0vxeVfdzAYVb3Zg+2QgWxDJjY0B8ujwdDWrnnKTPu4Ylhn6HLISXIlkMBoGwT 1/47TCnmn9t+lGagkMADppRRnJotHWObQG5wkzksqVa2CUB0HTESgbrm4rsxe6Ku JiZhHbTiiPWy7LgY6EFtj/YGPvLs0CSltvh4QUsd+QtDTM/EN7y3HcHqkv88ropG bSvJIh6WXdEJkwfSUdA0LECXSC6dizzZW2Y1glnT+7FMlhE1jVY4gruNJ37mCYMb 0gh9Zr76c2KYLA5vljGp6uo3j3A7wARJTdLfRFVcaFoz6NQmuFf9ZdBfDNDcymxs AGvO3j55JAZf =AoVg -----END PGP SIGNATURE----- Merge tag 'net-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from netfilter and bpf. Current release - regressions: - bpf: adjust size_index according to the value of KMALLOC_MIN_SIZE - netfilter: fix entries val in rule reset audit log - eth: stmmac: fix incorrect rxq|txq_stats reference Previous releases - regressions: - ipv4: fix null-deref in ipv4_link_failure - netfilter: - fix several GC related issues - fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP - eth: team: fix null-ptr-deref when team device type is changed - eth: i40e: fix VF VLAN offloading when port VLAN is configured - eth: ionic: fix 16bit math issue when PAGE_SIZE >= 64KB Previous releases - always broken: - core: fix ETH_P_1588 flow dissector - mptcp: fix several connection hang-up conditions - bpf: - avoid deadlock when using queue and stack maps from NMI - add override check to kprobe multi link attach - hsr: properly parse HSRv1 supervisor frames. - eth: igc: fix infinite initialization loop with early XDP redirect - eth: octeon_ep: fix tx dma unmap len values in SG - eth: hns3: fix GRE checksum offload issue" * tag 'net-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits) sfc: handle error pointers returned by rhashtable_lookup_get_insert_fast() igc: Expose tx-usecs coalesce setting to user octeontx2-pf: Do xdp_do_flush() after redirects. bnxt_en: Flush XDP for bnxt_poll_nitroa0()'s NAPI net: ena: Flush XDP packets on error. net/handshake: Fix memory leak in __sock_create() and sock_alloc_file() net: hinic: Fix warning-hinic_set_vlan_fliter() warn: variable dereferenced before check 'hwdev' netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP netfilter: nf_tables: fix memleak when more than 255 elements expired netfilter: nf_tables: disable toggling dormant table state more than once vxlan: Add missing entries to vxlan_get_size() net: rds: Fix possible NULL-pointer dereference team: fix null-ptr-deref when team device type is changed net: bridge: use DEV_STATS_INC() net: hns3: add 5ms delay before clear firmware reset irq source net: hns3: fix fail to delete tc flower rules during reset issue net: hns3: only enable unicast promisc when mac table full net: hns3: fix GRE checksum offload issue net: hns3: add cmdq check for vf periodic service task net: stmmac: fix incorrect rxq|txq_stats reference ...	2023-09-21 11:28:16 -07:00