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Merge tag 'x86_platform_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Borislav Petkov:
"A bunch of SGI UV improvements, fixes and cleanups"
* tag 'x86_platform_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/uv: Remove dead !CONFIG_KEXEC_CORE code
x86/platform/uv: Fix !KEXEC build failure
x86/platform/uv: Add more to secondary CPU kdump info
x86/platform/uv: Use x2apic enabled bit as set by BIOS to indicate APIC mode
x86/platform/uv: Set section block size for hubless architectures
x86/platform/uv: Fix indentation warning in Documentation/ABI/testing/sysfs-firmware-sgi_uv
486SX.
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Merge tag 'x86_build_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Borislav Petkov:
"A bunch of clang build fixes and a Kconfig highmem selection fix for
486SX"
* tag 'x86_build_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Disable HIGHMEM64G selection for M486SX
efi/libstub: Add $(CLANG_FLAGS) to x86 flags
x86/boot: Add $(CLANG_FLAGS) to compressed KBUILD_CFLAGS
x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS)
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Merge tag 'x86_cleanups_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 cleanups from Borislav Petkov:
"Trivial cleanups and fixes all over the place"
* tag 'x86_cleanups_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Remove me from IDE/ATAPI section
x86/pat: Do not compile stubbed functions when X86_PAT is off
x86/asm: Ensure asm/proto.h can be included stand-alone
x86/platform/intel/quark: Fix incorrect kernel-doc comment syntax in files
x86/msr: Make locally used functions static
x86/cacheinfo: Remove unneeded dead-store initialization
x86/process/64: Move cpu_current_top_of_stack out of TSS
tools/turbostat: Unmark non-kernel-doc comment
x86/syscalls: Fix -Wmissing-prototypes warnings from COND_SYSCALL()
x86/fpu/math-emu: Fix function cast warning
x86/msr: Fix wr/rdmsr_safe_regs_on_cpu() prototypes
x86: Fix various typos in comments, take #2
x86: Remove unusual Unicode characters from comments
x86/kaslr: Return boolean values from a function returning bool
x86: Fix various typos in comments
x86/setup: Remove unused RESERVE_BRK_ARRAY()
stacktrace: Move documentation for arch_stack_walk_reliable() to header
x86: Remove duplicate TSC DEADLINE MSR definitions
couple of gcc11 warning fixes.
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Merge tag 'x86_boot_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Borislav Petkov:
"Consolidation and cleanup of the early memory reservations, along with
a couple of gcc11 warning fixes"
* tag 'x86_boot_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/setup: Move trim_snb_memory() later in setup_arch() to fix boot hangs
x86/setup: Merge several reservations of start of memory
x86/setup: Consolidate early memory reservations
x86/boot/compressed: Avoid gcc-11 -Wstringop-overread warning
x86/boot/tboot: Avoid Wstringop-overread-warning
The compat layer needs to parse untrusted input (the ruleset)
to translate it to a 64bit compatible format.
We had a number of bugs in this department in the past, so allow users
to turn this feature off.
Add CONFIG_NETFILTER_XTABLES_COMPAT kconfig knob and make it default to y
to keep existing behaviour.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Update batch callbacks to use the nfnl_info structure. Rename one
clashing info variable to expr_info.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Christopherson, Kai Huang and Jarkko Sakkinen. Along with the usual
fixes, cleanups and improvements.
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Merge tag 'x86_sgx_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SGX updates from Borislav Petkov:
"Add the guest side of SGX support in KVM guests. Work by Sean
Christopherson, Kai Huang and Jarkko Sakkinen.
Along with the usual fixes, cleanups and improvements"
* tag 'x86_sgx_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/sgx: Mark sgx_vepc_vm_ops static
x86/sgx: Do not update sgx_nr_free_pages in sgx_setup_epc_section()
x86/sgx: Move provisioning device creation out of SGX driver
x86/sgx: Add helpers to expose ECREATE and EINIT to KVM
x86/sgx: Add helper to update SGX_LEPUBKEYHASHn MSRs
x86/sgx: Add encls_faulted() helper
x86/sgx: Add SGX2 ENCLS leaf definitions (EAUG, EMODPR and EMODT)
x86/sgx: Move ENCLS leaf definitions to sgx.h
x86/sgx: Expose SGX architectural definitions to the kernel
x86/sgx: Initialize virtual EPC driver even when SGX driver is disabled
x86/cpu/intel: Allow SGX virtualization without Launch Control support
x86/sgx: Introduce virtual EPC for use by KVM guests
x86/sgx: Add SGX_CHILD_PRESENT hardware error code
x86/sgx: Wipe out EREMOVE from sgx_free_epc_page()
x86/cpufeatures: Add SGX1 and SGX2 sub-features
x86/cpufeatures: Make SGX_LC feature bit depend on SGX bit
x86/sgx: Remove unnecessary kmap() from sgx_ioc_enclave_init()
selftests/sgx: Use getauxval() to simplify test code
selftests/sgx: Improve error detection and messages
x86/sgx: Add a basic NUMA allocation scheme to sgx_alloc_epc_page()
...
frequency has been retrieved from the hypervisor.
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Merge tag 'x86_vmware_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vmware guest update from Borislav Petkov:
"Have vmware guests skip the refined TSC calibration when the TSC
frequency has been retrieved from the hypervisor"
* tag 'x86_vmware_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vmware: Avoid TSC recalibration when frequency is known
cleanups, fixes and improvements.
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Merge tag 'x86_seves_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 AMD secure virtualization (SEV-ES) updates from Borislav Petkov:
"Add support for SEV-ES guests booting through the 32-bit boot path,
along with cleanups, fixes and improvements"
* tag 'x86_seves_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev-es: Optimize __sev_es_ist_enter() for better readability
x86/sev-es: Replace open-coded hlt-loops with sev_es_terminate()
x86/boot/compressed/64: Check SEV encryption in the 32-bit boot-path
x86/boot/compressed/64: Add CPUID sanity check to 32-bit boot-path
x86/boot/compressed/64: Add 32-bit boot #VC handler
x86/boot/compressed/64: Setup IDT in startup_32 boot path
x86/boot/compressed/64: Reload CS in startup_32
x86/sev: Do not require Hypervisor CPUID bit for SEV guests
x86/boot/compressed/64: Cleanup exception handling before booting kernel
x86/virtio: Have SEV guests enforce restricted virtio memory access
x86/sev-es: Remove subtraction of res variable
bit definitions in a separate csv file which allows for adding support
for new CPUID leafs and bits without having to update the tool. The main
use case for the tool is hw enablement on preproduction x86 hw.
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Merge tag 'x86_misc_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 tool update from Borislav Petkov:
"A new kcpuid tool to dump the raw CPUID leafs of a CPU.
It has the CPUID bit definitions in a separate csv file which allows
for adding support for new CPUID leafs and bits without having to
update the tool.
The main use case for the tool is hw enablement on preproduction x86
hardware"
* tag 'x86_misc_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/x86/kcpuid: Add AMD leaf 0x8000001E
tools/x86/kcpuid: Check last token too
selftests/x86: Add a missing .note.GNU-stack section to thunks_32.S
tools/x86/kcpuid: Add AMD Secure Encryption leaf
tools/x86: Add a kcpuid tool to show raw CPU features
eliminate custom code patching. For that, the alternatives infra is
extended to accomodate paravirt's needs and, as a result, a lot of
paravirt patching code goes away, leading to a sizeable cleanup and
simplification. Work by Juergen Gross.
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Merge tag 'x86_alternatives_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 alternatives/paravirt updates from Borislav Petkov:
"First big cleanup to the paravirt infra to use alternatives and thus
eliminate custom code patching.
For that, the alternatives infrastructure is extended to accomodate
paravirt's needs and, as a result, a lot of paravirt patching code
goes away, leading to a sizeable cleanup and simplification.
Work by Juergen Gross"
* tag 'x86_alternatives_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/paravirt: Have only one paravirt patch function
x86/paravirt: Switch functions with custom code to ALTERNATIVE
x86/paravirt: Add new PVOP_ALT* macros to support pvops in ALTERNATIVEs
x86/paravirt: Switch iret pvops to ALTERNATIVE
x86/paravirt: Simplify paravirt macros
x86/paravirt: Remove no longer needed 32-bit pvops cruft
x86/paravirt: Add new features for paravirt patching
x86/alternative: Use ALTERNATIVE_TERNARY() in _static_cpu_has()
x86/alternative: Support ALTERNATIVE_TERNARY
x86/alternative: Support not-feature
x86/paravirt: Switch time pvops functions to use static_call()
static_call: Add function to query current function
static_call: Move struct static_call_key definition to static_call_types.h
x86/alternative: Merge include files
x86/alternative: Drop unused feature parameter from ALTINSTR_REPLACEMENT()
MCE, AMD-specific) when injecting an MCE.
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Merge tag 'ras_core_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS update from Borislav Petkov:
"Provide the ability to specify the IPID (IP block associated with the
MCE, AMD-specific) when injecting an MCE"
* tag 'ras_core_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce/inject: Add IPID for injection too
the ordering of when new microcode is loaded from the fs, vs checking
whether all CPUs are online.
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Merge tag 'x86_microcode_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode update from Borislav Petkov:
"A single fix to the late microcode loading machinery which corrects
the ordering of when new microcode is loaded from the fs, vs checking
whether all CPUs are online"
* tag 'x86_microcode_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Check for offline CPUs before requesting new microcode
Pull crypto updates from Herbert Xu:
"API:
- crypto_destroy_tfm now ignores errors as well as NULL pointers
Algorithms:
- Add explicit curve IDs in ECDH algorithm names
- Add NIST P384 curve parameters
- Add ECDSA
Drivers:
- Add support for Green Sardine in ccp
- Add ecdh/curve25519 to hisilicon/hpre
- Add support for AM64 in sa2ul"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (184 commits)
fsverity: relax build time dependency on CRYPTO_SHA256
fscrypt: relax Kconfig dependencies for crypto API algorithms
crypto: camellia - drop duplicate "depends on CRYPTO"
crypto: s5p-sss - consistently use local 'dev' variable in probe()
crypto: s5p-sss - remove unneeded local variable initialization
crypto: s5p-sss - simplify getting of_device_id match data
ccp: ccp - add support for Green Sardine
crypto: ccp - Make ccp_dev_suspend and ccp_dev_resume void functions
crypto: octeontx2 - add support for OcteonTX2 98xx CPT block.
crypto: chelsio/chcr - Remove useless MODULE_VERSION
crypto: ux500/cryp - Remove duplicate argument
crypto: chelsio - remove unused function
crypto: sa2ul - Add support for AM64
crypto: sa2ul - Support for per channel coherency
dt-bindings: crypto: ti,sa2ul: Add new compatible for AM64
crypto: hisilicon - enable new error types for QM
crypto: hisilicon - add new error type for SEC
crypto: hisilicon - support new error types for ZIP
crypto: hisilicon - dynamic configuration 'err_info'
crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c
...
Peter Zijlstra asked us to find bad annotation that blows up the lockdep
storage [1][2][3] but we could not find such annotation [4][5], and
Peter cannot give us feedback any more [6]. Since we tested this patch
on linux-next.git without problems, and keeping this problem unresolved
discourages kernel testing which is more painful, I'm sending this patch
without forever waiting for response from Peter.
[1] https://lkml.kernel.org/r/20200916115057.GO2674@hirez.programming.kicks-ass.net
[2] https://lkml.kernel.org/r/20201118142357.GW3121392@hirez.programming.kicks-ass.net
[3] https://lkml.kernel.org/r/20201118151038.GX3121392@hirez.programming.kicks-ass.net
[4] https://lkml.kernel.org/r/CACT4Y+asqRbjaN9ras=P5DcxKgzsnV0fvV0tYb2VkT+P00pFvQ@mail.gmail.com
[5] https://lkml.kernel.org/r/4b89985e-99f9-18bc-0bf1-c883127dc70c@i-love.sakura.ne.jp
[6] https://lkml.kernel.org/r/CACT4Y+YnHFV1p5mbhby2nyOaNTy8c_yoVk86z5avo14KWs0s1A@mail.gmail.com
kernel/locking/lockdep.c | 2 -
kernel/locking/lockdep_internals.h | 8 +++----
lib/Kconfig.debug | 40 +++++++++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+), 5 deletions(-)
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Merge tag 'tomoyo-pr-20210426' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1
Pull lockdep capacity limit updates from Tetsuo Handa:
"syzbot is occasionally reporting that fuzz testing is terminated due
to hitting upper limits lockdep can track.
Analysis via /proc/lockdep* did not show any obvious culprits, allow
tuning tracing capacity constants"
* tag 'tomoyo-pr-20210426' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1:
lockdep: Allow tuning tracing capacity constants.
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Merge tag 'keys-cve-2020-26541-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull x509 dbx/mokx UEFI support from David Howells:
"Here's a set of patches from Eric Snowberg[1] that add support for
EFI_CERT_X509_GUID entries in the dbx and mokx UEFI tables (such
entries cause matching certificates to be rejected).
These are currently ignored and only the hash entries are made use of.
Additionally Eric included his patches to allow such certificates to
be preloaded.
These patches deal with CVE-2020-26541.
To quote Eric:
'This is the fifth patch series for adding support for
EFI_CERT_X509_GUID entries [2]. It has been expanded to not only
include dbx entries but also entries in the mokx. Additionally
my series to preload these certificate [3] has also been
included'"
Link: https://lore.kernel.org/r/20210122181054.32635-1-eric.snowberg@oracle.com [1]
Link: https://patchwork.kernel.org/project/linux-security-module/patch/20200916004927.64276-1-eric.snowberg@oracle.com/ [2]
Link: https://lore.kernel.org/patchwork/cover/1315485/ [3]
* tag 'keys-cve-2020-26541-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
integrity: Load mokx variables into the blacklist keyring
certs: Add ability to preload revocation certs
certs: Move load_system_certificate_list to a common function
certs: Add EFI_CERT_X509_GUID support for dbx entries
Fix a regression in the TPM trusted keys caused by the generic rework
to add ARM TEE based trusted keys. Without this fix, the TPM trusted
key subsystem fails to add or load any keys.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'queue' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/tpmdd
Pull tpm fixes from James Bottomley:
"Fix a regression in the TPM trusted keys caused by the generic rework
to add ARM TEE based trusted keys.
Without this fix, the TPM trusted key subsystem fails to add or load
any keys"
* tag 'queue' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/tpmdd:
KEYS: trusted: fix TPM trusted keys for generic framework
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Merge tag 'tpmdd-next-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull tpm updates from Jarkko Sakkinen:
"New features:
- ARM TEE backend for kernel trusted keys to complete the existing
TPM backend
- ASN.1 format for TPM2 trusted keys to make them interact with the
user space stack, such as OpenConnect VPN
Other than that, a bunch of bug fixes"
* tag 'tpmdd-next-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
KEYS: trusted: Fix missing null return from kzalloc call
char: tpm: fix error return code in tpm_cr50_i2c_tis_recv()
MAINTAINERS: Add entry for TEE based Trusted Keys
doc: trusted-encrypted: updates with TEE as a new trust source
KEYS: trusted: Introduce TEE based Trusted Keys
KEYS: trusted: Add generic trusted keys framework
security: keys: trusted: Make sealed key properly interoperable
security: keys: trusted: use ASN.1 TPM2 key format for the blobs
security: keys: trusted: fix TPM2 authorizations
oid_registry: Add TCG defined OIDS for TPM keys
lib: Add ASN.1 encoder
tpm: vtpm_proxy: Avoid reading host log when using a virtual device
tpm: acpi: Check eventlog signature before using it
tpm: efi: Use local variable for calculating final log size
* acpi-misc:
ACPI: dock: fix some coding style issues
ACPI: sysfs: fix some coding style issues
ACPI: PM: add a missed blank line after declarations
ACPI: custom_method: fix a coding style issue
ACPI: CPPC: fix some coding style issues
ACPI: button: fix some coding style issues
ACPI: battery: fix some coding style issues
ACPI: acpi_pad: add a missed blank line after declarations
ACPI: LPSS: add a missed blank line after declarations
ACPI: ipmi: remove useless return statement for void function
ACPI: processor: fix some coding style issues
ACPI: APD: fix a block comment align issue
ACPI: AC: fix some coding style issues
ACPI: fix various typos in comments
In null_init, null_add_dev(dev) is called.
In null_add_dev, it calls null_free_zoned_dev(dev) to free dev->zones
via kvfree(dev->zones) in out_cleanup_zone branch and returns err.
Then null_init accept the err code and then calls null_free_dev(dev).
But in null_free_dev(dev), dev->zones is freed again by
null_free_zoned_dev().
My patch set dev->zones to NULL in null_free_zoned_dev() after
kvfree(dev->zones) is called, to avoid the double free.
Fixes: 2984c8684f ("nullb: factor disk parameters")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Link: https://lore.kernel.org/r/20210426143229.7374-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_import_fixed() doesn't expect a registered buffer slot to be NULL and
would fail stumbling on it. We don't allow it, but if during
__io_sqe_buffers_update() rsrc removal succeeds but following register
fails, we'll get such a situation.
Do it atomically and don't remove buffers until we sure that a new one
can be set.
Fixes: 634d00df5e ("io_uring: add full-fledged dynamic buffers support")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/830020f9c387acddd51962a3123b5566571b8c6d.1619446608.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* acpi-scan:
ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code
ACPI: scan: Utilize match_string() API
ACPI: scan: Call acpi_get_object_info() from acpi_set_pnp_ids()
ACPI: scan: Drop sta argument from acpi_init_device_object()
ACPI: scan: Drop sta argument from acpi_add_single_object()
ACPI: scan: Rearrange checks in acpi_bus_check_add()
ACPI: scan: Fold acpi_bus_type_and_status() into its caller
* acpi-drivers:
ACPI: HED: Drop unused ACPI_MODULE_NAME() definition
* acpi-pm:
ACPI: power: Turn off unused power resources unconditionally
ACPI: scan: Turn off unused power resources during initialization
* acpi-resources:
resource: Prevent irqresource_disabled() from erasing flags
* acpi-messages:
hwmon: acpi_power_meter: Get rid of ACPICA message printing
IIO: acpi-als: Get rid of ACPICA message printing
ACPI: utils: Introduce acpi_evaluation_failure_warn()
ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation
ACPI: sysfs: Get rid of ACPICA message printing
* acpi-pci:
ACPI: PCI: Replace direct printk() invocations in pci_link.c
ACPI: PCI: Drop ACPI_PCI_COMPONENT that is not used any more
ACPI: PCI: Replace ACPI_DEBUG_PRINT() and ACPI_EXCEPTION()
ACPI: PCI: IRQ: Consolidate printing diagnostic messages
* acpi-processor:
ACPI: processor: perflib: Eliminate redundant status check
ACPI: processor: Get rid of ACPICA message printing
ACPI: processor: idle: Drop extra prefix from pr_notice()
ACPI: processor: Remove initialization of static variable
* pm-opp:
memory: samsung: exynos5422-dmc: Convert to use resource-managed OPP API
drm/panfrost: Convert to use resource-managed OPP API
drm/lima: Convert to use resource-managed OPP API
mmc: sdhci-msm: Convert to use resource-managed OPP API
spi: spi-qcom-qspi: Convert to use resource-managed OPP API
spi: spi-geni-qcom: Convert to use resource-managed OPP API
serial: qcom_geni_serial: Convert to use resource-managed OPP API
opp: Change return type of devm_pm_opp_attach_genpd()
opp: Change return type of devm_pm_opp_register_set_opp_helper()
opp: Add devres wrapper for dev_pm_opp_of_add_table
opp: Add devres wrapper for dev_pm_opp_set_supported_hw
opp: Add devres wrapper for dev_pm_opp_set_regulators
opp: Add devres wrapper for dev_pm_opp_set_clkname
All sqpoll rings (even sharing sqpoll task) are currently dead bound
to the task that created them, iow when owner task dies it kills all
its SQPOLL rings and their inflight requests via task_work infra. It's
neither the nicist way nor the most convenient as adds extra
locking/waiting and dependencies.
Leave it alone and rely on SIGKILL being delivered on its thread group
exit, so there are only two cases left:
1) thread group is dying, so sqpoll task gets a signal and exit itself
cancelling all requests.
2) an sqpoll ring is dying. Because refs_kill() is called the sqpoll not
going to submit any new request, and that's what we need. And
io_ring_exit_work() will do all the cancellation itself before
actually killing ctx, so sqpoll doesn't need to worry about it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/3cd7f166b9c326a2c932b70e71a655b03257b366.1619389911.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
After closing an SQPOLL ring, io_ring_exit_work() kicks in and starts
doing cancellations via io_uring_try_cancel_requests(). It will go
through io_uring_try_cancel_iowq(), which uses ctx->tctx_list, but as
SQPOLL task don't have a ctx note, its io-wq won't be reachable and so
is left not cancelled.
It will eventually cancelled when one of the tasks dies, but if a thread
group survives for long and changes rings, it will spawn lots of
unreclaimed resources and live locked works.
Cancel SQPOLL task's io-wq separately in io_ring_exit_work().
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a71a7fe345135d684025bb529d5cb1d8d6b46e10.1619389911.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The variable up.resv is not initialized and is being checking for a
non-zero value in the call to _io_register_rsrc_update. Fix this by
explicitly setting the variable to 0.
Addresses-Coverity: ("Uninitialized scalar variable)"
Fixes: c3bdad0271 ("io_uring: add generic rsrc update with tags")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210426094735.8320-1-colin.king@canonical.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
ioc_adjust_base_vrate() ignored vrate_min when rq_wait_pct indicates that
there is QD contention. The reasoning was that QD depletion always reliably
indicates device saturation and thus it's safe to override user specified
vrate_min. However, this sometimes leads to unnecessary throttling,
especially on really fast devices, because vrate adjustments have delays and
inertia. It also confuses users because the behavior violates the explicitly
specified configuration.
This patch drops the special case handling so that vrate_min is always
applied.
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/YIIo1HuyNmhDeiNx@slm.duckdns.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In command queueing mode, the cache isn't flushed via the mmc_flush_cache()
function, but instead by issuing a CMDQ_TASK_MGMT (CMD48) with a
FLUSH_CACHE opcode. In this path, we need to check if cache has been
enabled, before deciding to flush the cache, along the lines of what's
being done in mmc_flush_cache().
To fix this problem, let's add a new bus ops callback ->cache_enabled() and
implement it for the mmc bus type. In this way, the mmc block device driver
can call it to know whether cache flushing should be done.
Fixes: 1e8e55b670 (mmc: block: Add CQE support)
Cc: stable@vger.kernel.org
Reported-by: Brendan Peter <bpeter@lytx.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Tested-by: Brendan Peter <bpeter@lytx.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20210425060207.2591-2-avri.altman@wdc.com
Link: https://lore.kernel.org/r/20210425060207.2591-3-avri.altman@wdc.com
[Ulf: Squashed the two patches and made some minor updates]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
A minor cleanup to address a clang warning removed an assigned
but unused local variable, but this now caused a gcc warning as
kfifo_out() is annotated to require checking its return code:
In file included from drivers/memstick/host/r592.h:13,
from drivers/memstick/host/r592.c:21:
drivers/memstick/host/r592.c: In function 'r592_flush_fifo_write':
include/linux/kfifo.h:588:1: error: ignoring return value of '__kfifo_uint_must_check_helper' declared with attribute 'warn_unused_result' [-Werror=unused-result]
588 | __kfifo_uint_must_check_helper( \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
589 | ({ \
| ~~~~
590 | typeof((fifo) + 1) __tmp = (fifo); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
591 | typeof(__tmp->ptr) __buf = (buf); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
592 | unsigned long __n = (n); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
593 | const size_t __recsize = sizeof(*__tmp->rectype); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
594 | struct __kfifo *__kfifo = &__tmp->kfifo; \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
595 | (__recsize) ?\
| ~~~~~~~~~~~~~~
596 | __kfifo_out_r(__kfifo, __buf, __n, __recsize) : \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
597 | __kfifo_out(__kfifo, __buf, __n); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
598 | }) \
| ~~~~
599 | )
| ~
drivers/memstick/host/r592.c:367:9: note: in expansion of macro 'kfifo_out'
367 | kfifo_out(&dev->pio_fifo, buffer, 4);
| ^~~~~~~~~
The value was never checked here, and the purpose of the function
is only to flush the contents, so restore the old behavior but
add a cast to void and a comment, which hopefully warns with neither
gcc nor clang now.
If anyone has an idea for how to fix it without ignoring the return
code, that is probably better.
Fixes: 4b00ed3c50 ("memstick: r592: remove unused variable")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210421135215.3414589-1-arnd@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
BUG_ON uses unlikely in if(), it can be optimized at compile time.
Usually, the condition in if() is not satisfied. In my opinion,
this can improve the efficiency of the multi-stage pipeline.
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
In some cases readahead of more than the read size can help
(to allow parallel i/o of read ahead which can improve performance).
Ceph introduced a mount parameter "rasize" to allow controlling this.
Add mount parameter "rasize" to allow control of amount of readahead
requested of the server. If rasize not set, rasize defaults to
negotiated rsize as before.
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Jiri Olsa says:
====================
hi,
while adding test for pinning the module while there's
trampoline attach to it, I noticed that we don't allow
link detach and following re-attach for trampolines.
Adding that for tracing and lsm programs.
You need to have patch [1] from bpf tree for test module
attach test to pass.
v5 changes:
- fixed missing hlist_del_init change
- fixed several ASSERT calls
- added extra patch for missing ';'
- added ASSERT macros to lsm test
- added acks
thanks,
jirka
[1] https://lore.kernel.org/bpf/20210326105900.151466-1-jolsa@kernel.org/
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Adding test to verify that once we attach module's trampoline,
the module can't be unloaded.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210414195147.1624932-7-jolsa@kernel.org
Adding the test to re-attach (detach/attach again) lsm programs,
plus check that already linked program can't be attached again.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210414195147.1624932-6-jolsa@kernel.org
Adding the test to re-attach (detach/attach again) tracing
fexit programs, plus check that already linked program can't
be attached again.
Also switching to ASSERT* macros.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210414195147.1624932-5-jolsa@kernel.org
Adding the test to re-attach (detach/attach again) tracing
fentry programs, plus check that already linked program can't
be attached again.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210414195147.1624932-4-jolsa@kernel.org
