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linux/arch/x86/kernel
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Linus Torvalds e3da8db055 A single fix for the mechanism to park CPUs with an INIT IPI. 
On shutdown or kexec, the kernel tries to park the non-boot CPUs with an
 INIT IPI. But the same code path is also used by the crash utility. If the
 CPU which panics is not the boot CPU then it sends an INIT IPI to the boot
 CPU which resets the machine. Prevent this by validating that the CPU which
 runs the stop mechanism is the boot CPU. If not, leave the other CPUs in
 HLT.
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Merge tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "A single fix for the mechanism to park CPUs with an INIT IPI.

  On shutdown or kexec, the kernel tries to park the non-boot CPUs with
  an INIT IPI. But the same code path is also used by the crash utility.
  If the CPU which panics is not the boot CPU then it sends an INIT IPI
  to the boot CPU which resets the machine.

  Prevent this by validating that the CPU which runs the stop mechanism
  is the boot CPU. If not, leave the other CPUs in HLT"

* tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/smp: Don't send INIT to boot CPU
2023-07-09 10:08:38 -07:00
..
acpi
- Address -Wmissing-prototype warnings
2023-06-26 16:43:54 -07:00
apic
Add UV platform support for sub-NUMA clustering
2023-06-26 16:26:44 -07:00
cpu
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
fpu
Updates for the x86 boot process:
2023-06-26 13:39:10 -07:00
kprobes
probes updates for 6.3:
2023-02-23 13:03:08 -08:00
.gitignore
…
alternative.c
Locking changes for v6.5:
2023-06-27 14:14:30 -07:00
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: Re-sort and re-indent PCI defines
2023-06-05 12:26:54 +02:00
aperture_64.c
x86: Fix various duplicate-word comment typos
2022-08-15 19:17:52 +02:00
apm_32.c
efi: x86: Wire up IBT annotation in memory attributes table
2023-02-09 19:30:54 +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
x86/smpboot: Remove initial_stack on 64-bit
2023-03-21 13:35:53 +01:00
audit_64.c
…
bootflag.c
…
callthunks.c
objtool changes for v6.5:
2023-06-27 15:05:41 -07:00
cfi.c
x86: Add support for CONFIG_CFI_CLANG
2022-09-26 10:13:16 -07:00
check.c
…
cpuid.c
driver core: class: remove module * from class_create()
2023-03-17 15:16:33 +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: Disable virt in core NMI crash handler to avoid double shootdown
2023-01-24 10:05:21 -08:00
devicetree.c
x86/of: Add support for boot time interrupt delivery mode configuration
2022-12-02 14:57:14 +01:00
doublefault_32.c
x86: Avoid missing-prototype warnings for doublefault code
2023-05-18 11:56:18 -07:00
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
x86/show_trace_log_lvl: Ensure stack pointer is aligned, again
2023-05-16 06:31:04 -07:00
e820.c
x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery
2023-01-11 12:45:16 +01:00
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/ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
2023-06-20 18:38:38 -04:00
ftrace_64.S
x86/ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
2023-06-20 18:38:38 -04:00
ftrace.c
x86/ftrace: Move prepare_ftrace_return prototype to header
2023-05-18 11:56:01 -07:00
head32.c
x86: Add dummy prototype for mk_early_pgtbl_32()
2023-05-18 11:56:16 -07:00
head64.c
x86/head: Mark *_start_kernel() __noreturn
2023-04-14 17:31:24 +02:00
head_32.S
x86/smpboot: Restrict soft_restart_cpu() to SEV
2023-05-15 13:44:50 +02:00
head_64.S
A large update for SMP management:
2023-06-26 13:59:56 -07:00
hpet.c
clocksource: Verify HPET and PMTMR when TSC unverified
2023-02-02 14:23:02 -08:00
hw_breakpoint.c
x86/amd: Cache debug register values in percpu variables
2023-01-31 20:09:26 +01:00
i8237.c
…
i8253.c
…
i8259.c
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
2023-01-16 17:24:56 +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: Add hardcoded hypervisor interrupts to /proc/stat
2023-06-08 08:28:08 -07:00
irqflags.S
x86: Prepare asm files for straight-line-speculation
2021-12-08 12:25:37 +01:00
irqinit.c
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
2023-01-16 17:24:56 +01:00
itmt.c
x86/sched/itmt: Give all SMT siblings of a core the same priority
2023-05-08 10:58:38 +02:00
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
docs: move x86 documentation into Documentation/arch/
2023-03-30 12:58:51 -06:00
kgdb.c
…
ksysfs.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-09 12:49:44 +01:00
kvm.c
ARM64:
2022-12-15 11:12:21 -08:00
kvmclock.c
x86/tsc: Provide sched_clock_noinstr()
2023-06-05 21:11:08 +02:00
ldt.c
x86: allow get_locked_pte() to fail
2023-06-19 16:19:10 -07:00
machine_kexec_32.c
…
machine_kexec_64.c
x86/kexec: remove unnecessary arch_kexec_kernel_image_load()
2023-04-08 13:45:38 -07:00
Makefile
rethook, fprobe: do not trace rethook related functions
2023-05-18 07:08:01 +09:00
mmconf-fam10h_64.c
…
module.c
module: replace module_layout with module_memory
2023-03-09 12:55:15 -08:00
mpparse.c
…
msr.c
driver core: class: remove module * from class_create()
2023-03-17 15:16:33 +01:00
nmi_selftest.c
…
nmi.c
locking/atomic: treewide: use raw_atomic*_<op>()
2023-06-05 09:57:20 +02:00
paravirt-spinlocks.c
…
paravirt.c
x86/paravirt: Convert simple paravirt functions to asm
2023-03-17 13:29:47 +01:00
pci-dma.c
docs: move x86 documentation into Documentation/arch/
2023-03-30 12:58:51 -06:00
pcspeaker.c
…
perf_regs.c
…
platform-quirks.c
x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled()
2023-05-18 11:56:18 -07:00
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/resctl: fix scheduler confusion with 'current'
2023-03-08 11:48:11 -08:00
process_64.c
IOMMU Updates for Linux 6.4
2023-04-30 13:00:38 -07:00
process.c
x86/smp: Dont access non-existing CPUID leaf
2023-06-20 14:51:46 +02:00
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
locking/atomic: treewide: use raw_atomic*_<op>()
2023-06-05 09:57:20 +02:00
quirks.c
…
reboot_fixups_32.c
…
reboot.c
cpu: Mark nmi_panic_self_stop() __noreturn
2023-04-14 17:31:26 +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,objtool: Split UNWIND_HINT_EMPTY in two
2023-03-23 23:18:58 +01:00
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: Simplify PNP ids check
2023-01-06 04:22:34 +01:00
setup_percpu.c
- Add the call depth tracking mitigation for Retbleed which has
2022-12-14 15:03:00 -08:00
setup.c
xen: branch for v6.5-rc1
2023-06-27 16:03:20 -07:00
sev_verify_cbit.S
x86: Prepare asm files for straight-line-speculation
2021-12-08 12:25:37 +01:00
sev-shared.c
x86/sev: Add SNP-specific unaccepted memory support
2023-06-06 18:31:37 +02:00
sev.c
- Some SEV and CC platform helpers cleanup and simplifications now that
2023-06-27 13:26:30 -07:00
signal_32.c
- Cache the AMD debug registers in per-CPU variables to avoid MSR writes
2023-02-21 14:51:40 -08:00
signal_64.c
x86/signal/compat: Move sigaction_compat_abi() to signal_64.c
2023-01-06 04:16:02 +01:00
signal.c
x86/init: Initialize signal frame size late
2023-06-16 10:16:00 +02:00
smp.c
A set of fixes for kexec(), reboot and shutdown issues
2023-06-26 14:45:53 -07:00
smpboot.c
A single fix for the mechanism to park CPUs with an INIT IPI.
2023-07-09 10:08:38 -07:00
stacktrace.c
x86: remove __range_not_ok()
2022-02-25 09:36:05 +01:00
static_call.c
x86/static_call: Add support for Jcc tail-calls
2023-01-31 15:05:31 +01:00
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
x86/gsseg: Move load_gs_index() to its own new header file
2023-01-12 13:06:36 +01:00
tls.h
…
topology.c
x86/topology: Remove CPU0 hotplug option
2023-05-15 13:44:49 +02:00
trace_clock.c
…
trace.c
…
tracepoint.c
x86/traceponit: Fix comment about irq vector tracepoints
2022-05-26 22:03:52 -04:00
traps.c
IOMMU Updates for Linux 6.4
2023-04-30 13:00:38 -07:00
tsc_msr.c
…
tsc_sync.c
x86/smpboot: Make TSC synchronization function call based
2023-05-15 13:44:53 +02:00
tsc.c
Scheduler changes for v6.5:
2023-06-27 14:03:21 -07:00
umip.c
…
unwind_frame.c
x86: kmsan: don't instrument stack walking functions
2022-10-03 14:03:25 -07:00
unwind_guess.c
…
unwind_orc.c
objtool changes for v6.5:
2023-06-27 15:05:41 -07:00
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/retbleed: Add __x86_return_thunk alignment checks
2023-05-17 12:14:21 +02:00
vsmp_64.c
…
x86_init.c
- Fix a race window where load_unaligned_zeropad() could cause
2023-06-26 16:32:47 -07:00