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49c1d07fd0
linux/arch/powerpc/kernel
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Nicholas Piggin 49c1d07fd0 powerpc/powernv: Enable HAIL (HV AIL) for ISA v3.1 processors 
Starting with ISA v3.1, LPCR[AIL] no longer controls the interrupt
mode for HV=1 interrupts. Instead, a new LPCR[HAIL] bit is defined
which behaves like AIL=3 for HV interrupts when set.

Set HAIL on bare metal to give us mmu-on interrupts and improve
performance.

This also fixes an scv bug: we don't implement scv real mode (AIL=0)
vectors because they are at an inconvenient location, so we just
disable scv support when AIL can not be set. However powernv assumes
that LPCR[AIL] will enable AIL mode so it enables scv support despite
HV interrupts being AIL=0, which causes scv interrupts to go off into
the weeds.

Fixes: 7fa95f9ada ("powerpc/64s: system call support for scv/rfscv instructions")
Cc: stable@vger.kernel.org # v5.9+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210402024124.545826-1-npiggin@gmail.com
2021-04-18 23:19:29 +10:00
..
ptrace powerpc: remove partial register save logic 2021-04-14 23:04:44 +10:00
syscalls powerpc/syscalls: switch to generic syscallhdr.sh 2021-04-14 23:04:16 +10:00
trace powerpc: Add a ppc_inst_as_str() helper 2020-07-23 17:41:36 +10:00
vdso32 powerpc/vdso: Add support for time namespaces 2021-04-14 23:04:44 +10:00
vdso64 powerpc/vdso: Add support for time namespaces 2021-04-14 23:04:44 +10:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
align.c powerpc: remove partial register save logic 2021-04-14 23:04:44 +10:00
asm-offsets.c powerpc/64e/interrupt: use new interrupt return 2021-04-14 23:04:20 +10:00
audit.c
btext.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
cacheinfo.c powerpc/cacheinfo: Print correct cache-sibling map/list for L2 cache 2020-12-11 00:10:25 +11:00
cacheinfo.h
compat_audit.c
cpu_setup_6xx.S powerpc/32: Blacklist functions running with MMU disabled for kprobe 2020-06-02 20:59:11 +10:00
cpu_setup_44x.S
cpu_setup_fsl_booke.S powerpc: Retire e200 core (mpc555x processor) 2020-12-05 21:49:18 +11:00
cpu_setup_pa6t.S
cpu_setup_power.c powerpc/perf: MMCR0 control for PMU registers under PMCC=00 2020-12-04 01:01:29 +11:00
cpu_setup_ppc970.S
cputable.c arch: powerpc: Stop building and using oprofile 2021-01-29 10:05:51 +05:30
crash_dump.c powerpc: Add prefixed instructions to instruction data type 2020-05-19 00:10:39 +10:00
dawr.c powerpc/watchpoint: Guest support for 2nd DAWR hcall 2020-07-26 23:34:19 +10:00
dbell.c powerpc: handle irq_enter/irq_exit in interrupt handler wrappers 2021-02-09 00:10:49 +11:00
dma-iommu.c powerpc/dma: Fallback to dma_ops when persistent memory present 2020-11-27 10:33:42 +01:00
dma-mask.c
dma-swiotlb.c
dt_cpu_ftrs.c arch: powerpc: Stop building and using oprofile 2021-01-29 10:05:51 +05:30
early_32.c powerpc/fsl_booke/32: implement KASLR infrastructure 2019-11-13 19:27:40 +11:00
eeh_cache.c powerpc/eeh_cache: Fix a possible debugfs deadlock 2020-11-02 12:54:20 +11:00
eeh_driver.c pci-v5.9-changes 2020-08-07 18:48:15 -07:00
eeh_event.c powerpc/eeh: Fix build with STACKTRACE=n 2019-09-14 00:01:14 +10:00
eeh_pe.c powerpc/eeh: Delete eeh_pe->config_addr 2020-10-07 22:34:47 +11:00
eeh_sysfs.c powerpc/eeh: Pass eeh_dev to eeh_ops->resume_notify() 2020-07-26 23:34:20 +10:00
eeh.c powerpc/eeh: Fix EEH handling for hugepages in ioremap space. 2021-04-14 23:04:15 +10:00
entry_32.S powerpc/32: Manage KUAP in C 2021-03-29 13:22:11 +11:00
entry_64.S powerpc/64e/interrupt: reconcile irq soft-mask state in C 2021-04-14 23:04:43 +10:00
epapr_hcalls.S
epapr_paravirt.c powerpc: Use a datatype for instructions 2020-05-19 00:10:37 +10:00
exceptions-64e.S powerpc/64e/interrupt: handle bad_page_fault in C 2021-04-14 23:04:43 +10:00
exceptions-64s.S powerpc/64s: power4 nap fixup in C 2021-04-08 21:17:45 +10:00
fadump.c powerpc/traps: Enhance readability for trap types 2021-04-17 22:20:19 +10:00
firmware.c powerpc: Reintroduce is_kvm_guest() as a fast-path check 2020-12-04 01:01:22 +11:00
fpu.S powerpc/32: Always enable data translation in exception prolog 2021-03-29 13:22:05 +11:00
fsl_booke_entry_mapping.S powerpc/fsl_booke/32: implement KASLR infrastructure 2019-11-13 19:27:40 +11:00
head_8xx.S powerpc: Spelling/typo fixes 2021-04-08 21:17:42 +10:00
head_32.h powerpc/32s: Move KUEP locking/unlocking in C 2021-03-29 13:22:10 +11:00
head_40x.S powerpc/32: Refactor saving of volatile registers in exception prologs 2021-03-29 13:22:10 +11:00
head_44x.S powerpc/32: Remove the xfer parameter in EXCEPTION() macro 2021-03-29 13:22:09 +11:00
head_64.S powerpc/64s: Remove MSR[ISF] bit 2020-12-09 23:48:14 +11:00
head_book3s_32.S powerpc/32: Remove the xfer parameter in EXCEPTION() macro 2021-03-29 13:22:09 +11:00
head_booke.h powerpc/32s: Move KUEP locking/unlocking in C 2021-03-29 13:22:10 +11:00
head_fsl_booke.S powerpc/64e: Trivial spelling fixes throughout head_fsl_booke.S 2021-03-29 13:22:12 +11:00
hw_breakpoint_constraints.c powerpc/uaccess: Remove __get/put_user_inatomic() 2021-04-03 21:21:41 +11:00
hw_breakpoint.c powerpc/watchpoint: Workaround P10 DD1 issue with VSX-32 byte instructions 2020-12-11 00:09:10 +11:00
idle_6xx.S powerpc/32: Return directly from power_save_ppc32_restore() 2021-03-29 13:22:10 +11:00
idle_book3e.S
idle_book3s.S powerpc/64s: power4 nap fixup in C 2021-04-08 21:17:45 +10:00
idle_e500.S powerpc/32: Return directly from power_save_ppc32_restore() 2021-03-29 13:22:10 +11:00
idle.c sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
ima_arch.c powerpc/ima: Fix secure boot rules in ima arch policy 2020-05-07 17:25:54 +10:00
interrupt.c powerpc/traps: Enhance readability for trap types 2021-04-17 22:20:19 +10:00
io-workarounds.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
io.c
iomap.c powerpc: inline iomap accessors 2020-12-04 01:01:09 +11:00
iommu.c powerpc/iommu/debug: fix ifnullfree.cocci warnings 2021-03-29 13:22:17 +11:00
irq.c powerpc/64e/interrupt: use new interrupt return 2021-04-14 23:04:20 +10:00
isa-bridge.c powerpc: remove __ioremap_at and __iounmap_at 2020-06-02 10:59:10 -07:00
jump_label.c powerpc: Switch to relative jump labels 2021-04-03 21:22:21 +11:00
kgdb.c powerpc/kernel: Trivial typo fix in kgdb.c 2021-03-29 13:22:15 +11:00
kprobes-ftrace.c ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs 2020-11-13 12:14:55 -05:00
kprobes.c powerpc: kprobes: Use generic kretprobe trampoline handler 2020-09-08 11:52:34 +02:00
kvm_emul.S powerpc/kvm: Add ifdefs around template code 2019-09-14 00:04:40 +10:00
kvm.c powerpc/kvm: Explicitly mark kvm guest code as __init 2019-09-14 00:04:40 +10:00
l2cr_6xx.S powerpc: Drop SYNC_601() ISYNC_601() and SYNC() 2020-10-08 21:17:13 +11:00
legacy_serial.c tty/serial: Migrate 8250_fsl to use has_sysrq 2019-12-18 15:04:42 +01:00
Makefile powerpc updates for 5.12 2021-02-22 14:34:00 -08:00
mce_power.c powerpc/64s/pseries: Add ERAT specific machine check handler 2020-12-04 01:01:23 +11:00
mce.c powerpc/mce: Make symbol 'mce_ue_event_work' static 2021-04-14 23:04:13 +10:00
misc_32.S powerpc/irq: Inline call_do_irq() and call_do_softirq() 2021-03-29 13:22:17 +11:00
misc_64.S powerpc/irq: Inline call_do_irq() and call_do_softirq() 2021-03-29 13:22:17 +11:00
misc.S powerpc/32: Blacklist functions running with MMU disabled for kprobe 2020-06-02 20:59:11 +10:00
module_32.c powerpc: module_[32|64].c: replace swap function with built-in one 2020-05-11 23:15:14 +10:00
module_64.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
module.c powerpc/modules: Load modules closer to kernel text 2021-04-14 23:04:13 +10:00
msi.c
note.S powerpc: Add PowerPC Capabilities ELF note 2019-08-30 09:40:15 +10:00
nvram_64.c powerpc updates for 5.8 2020-06-05 12:39:30 -07:00
of_platform.c powerpc/eeh: Remove eeh_dev_phb_init_dynamic() 2020-07-26 23:34:19 +10:00
optprobes_head.S powerpc: Add prefixed instructions to instruction data type 2020-05-19 00:10:39 +10:00
optprobes.c powerpc/optprobes: Make patch_imm64_load_insns() static 2021-01-30 11:39:29 +11:00
paca.c powerpc: Avoid broken GCC __attribute__((optimize)) 2020-11-19 14:50:14 +11:00
pci_32.c
pci_64.c powerpc updates for 5.8 2020-06-05 12:39:30 -07:00
pci_dn.c powerpc/pci: Move PHB discovery for PCI_DN using platforms 2021-02-09 00:01:05 +11:00
pci_of_scan.c powerpc/pci: Remove pcibios_setup_bus_devices() 2020-01-06 16:25:29 +11:00
pci-common.c powerpc/pci: Add ppc_md.discover_phbs() 2021-02-03 09:46:36 +11:00
pci-hotplug.c powerpc/eeh: Release EEH device state synchronously 2020-05-18 21:58:44 +10:00
pmc.c
ppc32.h
ppc_save_regs.S powerpc: Improve ppc_save_regs() 2020-04-04 21:40:57 +11:00
proc_powerpc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
process.c powerpc/traps: Enhance readability for trap types 2021-04-17 22:20:19 +10:00
prom_init_check.sh powerpc/prom_init: Undo relocation before entering secure mode 2019-10-29 15:12:17 +11:00
prom_init.c powerpc: remove unneeded semicolon 2021-03-24 14:09:29 +11:00
prom_parse.c
prom.c powerpc/smp: Cache CPU to chip lookup 2021-04-17 10:40:51 +10:00
reloc_32.S
reloc_64.S
rtas_flash.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
rtas_pci.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
rtas-proc.c powerpc/rtas: rename RTAS_RMOBUF_MAX to RTAS_USER_REGION_SIZE 2021-04-14 23:04:16 +10:00
rtas-rtc.c
rtas.c powerpc/rtas: rename RTAS_RMOBUF_MAX to RTAS_USER_REGION_SIZE 2021-04-14 23:04:16 +10:00
rtasd.c powerpc/rtasd: simplify handle_rtas_event(), emit message on events 2020-07-16 13:12:38 +10:00
secure_boot.c powerpc/pseries: Detect secure and trusted boot state of the system. 2020-07-16 14:49:53 +10:00
security.c powerpc/security: Make symbol 'stf_barrier' static 2021-04-14 23:04:13 +10:00
secvar-ops.c powerpc/powernv: Add OPAL API interface to access secure variable 2019-11-13 00:33:22 +11:00
secvar-sysfs.c powerpc: expose secure variables to userspace via sysfs 2019-11-13 00:33:22 +11:00
setup_32.c powerpc/32: Statically initialise first emergency context 2021-03-29 13:22:06 +11:00
setup_64.c powerpc/powernv: Enable HAIL (HV AIL) for ISA v3.1 processors 2021-04-18 23:19:29 +10:00
setup-common.c powerpc: Fix section mismatch warning in smp_setup_pacas() 2021-03-29 13:22:14 +11:00
setup.h powerpc: remove unneeded semicolons 2021-02-09 00:10:50 +11:00
signal_32.c powerpc: remove partial register save logic 2021-04-14 23:04:44 +10:00
signal_64.c powerpc: remove partial register save logic 2021-04-14 23:04:44 +10:00
signal.c powerpc/64: context tracking remove _TIF_NOHZ 2021-02-09 00:02:12 +11:00
signal.h powerpc/signal32: Convert do_setcontext[_tm]() to user access block 2021-04-03 21:22:19 +11:00
smp-tbsync.c
smp.c powerpc/smp: Set numa node before updating mask 2021-04-17 22:46:31 +10:00
stacktrace.c powerpc: Fix arch_stack_walk() to have running function as first entry 2021-03-29 13:22:16 +11:00
suspend.c
swsusp_32.S powerpc/32: Blacklist functions running with MMU disabled for kprobe 2020-06-02 20:59:11 +10:00
swsusp_64.c
swsusp_asm64.S
swsusp_booke.S
swsusp.c
sys_ppc32.c powerpc/compat_sys: swap hi/lo parts of 64-bit syscall args in LE mode 2021-02-11 23:35:07 +11:00
syscalls.c powerpc/syscalls: Use sys_old_select() in ppc_select() 2021-03-26 23:19:42 +11:00
sysfs.c powerpc/sysfs: Remove unused 'err' variable in sysfs_create_dscr_default() 2020-09-18 20:05:24 +10:00
systbl_chk.sh
systbl.S powerpc/syscalls: switch to generic syscalltbl.sh 2021-04-14 23:04:16 +10:00
tau_6xx.c powerpc: handle irq_enter/irq_exit in interrupt handler wrappers 2021-02-09 00:10:49 +11:00
time.c powerpc: handle irq_enter/irq_exit in interrupt handler wrappers 2021-02-09 00:10:49 +11:00
tm.S powerpc/tm: Save and restore AMR on treclaim and trechkpt 2020-10-06 23:22:25 +11:00
traps.c powerpc/traps: Enhance readability for trap types 2021-04-17 22:20:19 +10:00
ucall.S powerpc/kernel: Add ucall_norets() ultravisor call handler 2019-08-30 09:40:15 +10:00
udbg_16550.c
udbg.c powerpc/udbg: Make it safe to call udbg_printf() always 2019-10-11 19:33:25 +11:00
uprobes.c powerpc/uprobes: Validation for prefixed instruction 2021-03-29 12:52:24 +11:00
vdso32_wrapper.S powerpc/vdso: fix unnecessary rebuilds of vgettimeofday.o 2021-01-30 22:23:42 +11:00
vdso64_wrapper.S powerpc/vdso: fix unnecessary rebuilds of vgettimeofday.o 2021-01-30 22:23:42 +11:00
vdso.c powerpc/vdso: Add support for time namespaces 2021-04-14 23:04:44 +10:00
vecemu.c powerpc: Define and use get_user_instr() et. al. 2020-05-19 00:10:37 +10:00
vector.S powerpc/32: Always enable data translation in exception prolog 2021-03-29 13:22:05 +11:00
vmlinux.lds.S powerpc/64s: fix scv entry fallback flush vs interrupt 2021-01-20 15:58:19 +11:00
watchdog.c powerpc: move NMI entry/exit code into wrapper 2021-02-09 00:10:50 +11:00