Paul E. McKenney 344da544f1 x86/nmi: Print reasons why backtrace NMIs are ignored ...

Instrument nmi_trigger_cpumask_backtrace() to dump out diagnostics based
on evidence accumulated by exc_nmi().  These diagnostics are dumped for
CPUs that ignored an NMI backtrace request for more than 10 seconds.

[ paulmck: Apply Ingo Molnar feedback. ]

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <x86@kernel.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>

2023-01-19 15:55:12 -08:00

..

acpi

x86/acpi/cstate: Optimize ARB_DISABLE on Centaur CPUs

2022-11-11 09:42:05 -08:00

apic

Merge tag 'x86-apic-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-12 12:30:31 -08:00

cpu

Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2022-12-16 03:54:54 -08:00

fpu

Merge tag 'x86_fpu_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-12 14:41:57 -08:00

kprobes

Merge tag 'x86_mm_for_6.2_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-17 14:06:53 -06:00

.gitignore

…

alternative.c

Merge tag 'x86_mm_for_6.2_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-17 14:06:53 -06:00

amd_gart_64.c

x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros

2022-12-15 10:37:27 -08:00

amd_nb.c

x86/amd_nb: Add AMD PCI IDs for SMN communication

2022-07-20 17:35:40 +02:00

aperture_64.c

x86: Fix various duplicate-word comment typos

2022-08-15 19:17:52 +02:00

apm_32.c

x86/ibt: Disable IBT around firmware

2022-03-15 10:32:40 +01:00

asm-offsets_32.c

…

asm-offsets_64.c

x86: Fixup asm-offsets duplicate

2022-10-17 16:41:06 +02:00

asm-offsets.c

Merge tag 'v6.1-rc6' into x86/core, to resolve conflicts

2022-11-21 23:01:51 +01:00

audit_64.c

…

bootflag.c

…

callthunks.c

x86/ftrace: Make it call depth tracking aware

2022-10-17 16:41:19 +02:00

cfi.c

x86: Add support for CONFIG_CFI_CLANG

2022-09-26 10:13:16 -07:00

check.c

…

cpuid.c

driver core: make struct class.devnode() take a const *

2022-11-24 17:12:27 +01:00

crash_core_32.c

…

crash_core_64.c

…

crash_dump_32.c

vmcore: convert copy_oldmem_page() to take an iov_iter

2022-04-29 14:37:59 -07:00

crash_dump_64.c

use less confusing names for iov_iter direction initializers

2022-11-25 13:01:55 -05:00

crash.c

x86/crash: Fix minor typo/bug in debug message

2022-04-13 19:39:54 +02:00

devicetree.c

x86/of: Add support for boot time interrupt delivery mode configuration

2022-12-02 14:57:14 +01:00

doublefault_32.c

exit/doublefault: Remove apparently bogus comment about rewind_stack_do_exit

2021-10-20 13:09:43 -05:00

dumpstack_32.c

x86/percpu: Move irq_stack variables next to current_task

2022-10-17 16:41:05 +02:00

dumpstack_64.c

x86/percpu: Move irq_stack variables next to current_task

2022-10-17 16:41:05 +02:00

dumpstack.c

Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-10 17:53:04 -07:00

e820.c

x86/kexec: Carry forward IMA measurement log on kexec

2022-07-01 15:22:16 +02:00

early_printk.c

x86/earlyprintk: Clean up pciserial

2022-08-29 12:19:25 +02:00

early-quirks.c

drm/i915/rpl-p: Add PCI IDs

2022-04-19 17:14:09 -07:00

ebda.c

…

eisa.c

…

espfix_64.c

x86/espfix: Use get_random_long() rather than archrandom

2022-10-31 20:12:50 +01:00

ftrace_32.S

x86: Prepare asm files for straight-line-speculation

2021-12-08 12:25:37 +01:00

ftrace_64.S

Merge branch 'x86/urgent' into x86/core, to resolve conflict

2022-10-22 10:06:18 +02:00

ftrace.c

Merge tag 'x86_mm_for_6.2_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-17 14:06:53 -06:00

head32.c

…

head64.c

x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros

2022-12-15 10:37:27 -08:00

head_32.S

x86/asm/32: Remove setup_once()

2022-12-02 14:06:34 +01:00

head_64.S

x86/callthunks: Add call patching for call depth tracking

2022-10-17 16:41:13 +02:00

hpet.c

rtc: Check return value from mc146818_get_time()

2021-12-16 21:50:06 +01:00

hw_breakpoint.c

x86/mm: Randomize per-cpu entry area

2022-12-15 10:37:26 -08:00

i8237.c

…

i8253.c

…

i8259.c

x86/i8259: Make default_legacy_pic static

2022-10-31 10:20:32 +01:00

idt.c

x86/traps: Add #VE support for TDX guest

2022-04-07 08:27:51 -07:00

io_delay.c

…

ioport.c

…

irq_32.c

x86/percpu: Move irq_stack variables next to current_task

2022-10-17 16:41:05 +02:00

irq_64.c

x86/percpu: Move irq_stack variables next to current_task

2022-10-17 16:41:05 +02:00

irq_work.c

…

irq.c

x86/irq: Ensure PI wakeup handler is unregistered before module unload

2021-10-22 12:45:35 -04:00

irqflags.S

x86: Prepare asm files for straight-line-speculation

2021-12-08 12:25:37 +01:00

irqinit.c

…

itmt.c

…

jailhouse.c

…

jump_label.c

jump_label: make initial NOP patching the special case

2022-06-24 09:48:55 +02:00

kdebugfs.c

x86/boot: Fix memremap of setup_indirect structures

2022-03-09 12:49:44 +01:00

kexec-bzimage64.c

Merge tag 'integrity-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

2022-08-02 15:21:18 -07:00

kgdb.c

…

ksysfs.c

x86/boot: Fix memremap of setup_indirect structures

2022-03-09 12:49:44 +01:00

kvm.c

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2022-12-15 11:12:21 -08:00

kvmclock.c

x86/kvm: Don't waste kvmclock memory if there is nopv parameter

2022-04-13 13:37:19 -04:00

ldt.c

…

machine_kexec_32.c

…

machine_kexec_64.c

x86/kexec: fix memory leak of elf header buffer

2022-06-01 15:57:16 -07:00

Makefile

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

mmconf-fam10h_64.c

…

module.c

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

mpparse.c

…

msr.c

driver core: make struct class.devnode() take a const *

2022-11-24 17:12:27 +01:00

nmi_selftest.c

…

nmi.c

x86/nmi: Print reasons why backtrace NMIs are ignored

2023-01-19 15:55:12 -08:00

paravirt-spinlocks.c

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paravirt.c

x86/paravirt: Use common macro for creating simple asm paravirt functions

2022-11-24 13:56:44 +01:00

pci-dma.c

swiotlb: merge swiotlb-xen initialization into swiotlb

2022-04-18 07:21:13 +02:00

pcspeaker.c

…

perf_regs.c

…

platform-quirks.c

…

pmem.c

x86/pmem: Fix platform-device leak in error path

2022-06-20 18:01:16 +02:00

probe_roms.c

x86/kernel: Validate ROM memory before accessing when SEV-SNP is active

2022-04-06 13:23:09 +02:00

process_32.c

x86/percpu: Move current_top_of_stack next to current_task

2022-10-17 16:41:05 +02:00

process_64.c

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

process.c

Merge tag 'random-6.2-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

2022-12-12 16:22:22 -08:00

process.h

x86: Snapshot thread flags

2021-12-01 00:06:43 +01:00

ptrace.c

x86: Improve formatting of user_regset arrays

2022-11-01 15:36:52 -07:00

pvclock.c

…

quirks.c

…

reboot_fixups_32.c

…

reboot.c

x86: Use do_kernel_power_off()

2022-05-19 19:30:31 +02:00

relocate_kernel_32.S

x86/kexec: Disable RET on kexec

2022-07-09 13:12:32 +02:00

relocate_kernel_64.S

x86/callthunks: Add call patching for call depth tracking

2022-10-17 16:41:13 +02:00

resource.c

x86/PCI: Tidy E820 removal messages

2022-12-10 10:33:11 -06:00

rethook.c

x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regs

2022-03-28 19:38:51 -07:00

rtc.c

x86/rtc: Rename mach_set_rtc_mmss() to mach_set_cmos_time()

2022-08-14 11:24:29 +02:00

setup_percpu.c

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

setup.c

Merge tag 'x86_cpu_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-13 14:56:56 -08:00

sev_verify_cbit.S

x86: Prepare asm files for straight-line-speculation

2021-12-08 12:25:37 +01:00

sev-shared.c

Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV"

2022-07-27 18:09:13 +02:00

sev.c

x86/sev: Mark snp_abort() noreturn

2022-08-25 15:54:03 +02:00

signal_32.c

x86/signal/32: Merge native and compat 32-bit signal code

2022-10-19 09:58:49 +02:00

signal_64.c

x86/signal/64: Move 64-bit signal code to its own file

2022-10-19 09:58:49 +02:00

signal_compat.c

signal: Deliver SIGTRAP on perf event asynchronously if blocked

2022-04-22 12:14:05 +02:00

signal.c

x86/signal/64: Move 64-bit signal code to its own file

2022-10-19 09:58:49 +02:00

smp.c

…

smpboot.c

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

stacktrace.c

x86: remove __range_not_ok()

2022-02-25 09:36:05 +01:00

static_call.c

static_call: Add call depth tracking support

2022-10-17 16:41:16 +02:00

step.c

ptrace: Reimplement PTRACE_KILL by always sending SIGKILL

2022-05-11 14:34:28 -05:00

sys_ia32.c

…

sys_x86_64.c

x86/mm: Cleanup the control_va_addr_alignment() __setup handler

2022-05-04 18:20:42 +02:00

tboot.c

mm: remove rb tree.

2022-09-26 19:46:16 -07:00

time.c

…

tls.c

…

tls.h

…

topology.c

x86/cpu: Switch to cpu_feature_enabled() for X86_FEATURE_XENPV

2022-11-22 16:18:19 +01:00

trace_clock.c

…

trace.c

trace/osnoise: Fix an ifdef comment

2021-10-25 23:02:36 -04:00

tracepoint.c

x86/traceponit: Fix comment about irq vector tracepoints

2022-05-26 22:03:52 -04:00

traps.c

Merge tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-14 15:03:00 -08:00

tsc_msr.c

…

tsc_sync.c

x86/tsc: Add a timer to make sure TSC_adjust is always checked

2021-12-02 00:40:35 +01:00

tsc.c

x86/tsc: Make art_related_clocksource static

2022-10-17 16:20:48 +02:00

umip.c

…

unwind_frame.c

x86: kmsan: don't instrument stack walking functions

2022-10-03 14:03:25 -07:00

unwind_guess.c

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unwind_orc.c

Merge tag 'v6.1-rc6' into x86/core, to resolve conflicts

2022-11-21 23:01:51 +01:00

uprobes.c

uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix

2022-12-05 11:55:18 +01:00

verify_cpu.S

x86: Prepare asm files for straight-line-speculation

2021-12-08 12:25:37 +01:00

vm86_32.c

x86/32: Remove lazy GS macros

2022-04-14 14:09:43 +02:00

vmlinux.lds.S

x86/ibt: Implement FineIBT

2022-11-01 13:44:10 +01:00

vsmp_64.c

…

x86_init.c

x86/boot: Skip realmode init code when running as Xen PV guest

2022-11-25 12:05:22 +01:00