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linux/arch/x86/kernel
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Linus Torvalds 1b1cf8fe99 Changes in this cycle were: 
- Add the "ratelimit:N" parameter to the split_lock_detect= boot option,
    to rate-limit the generation of bus-lock exceptions. This is both
    easier on system resources and kinder to offending applications than
    the current policy of outright killing them.
 
  - Document the split-lock detection feature and its parameters.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-splitlock-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 splitlock updates from Ingo Molnar:

 - Add the "ratelimit:N" parameter to the split_lock_detect= boot
   option, to rate-limit the generation of bus-lock exceptions.

   This is both easier on system resources and kinder to offending
   applications than the current policy of outright killing them.

 - Document the split-lock detection feature and its parameters.

* tag 'x86-splitlock-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation/x86: Add ratelimit in buslock.rst
  Documentation/admin-guide: Add bus lock ratelimit
  x86/bus_lock: Set rate limit for bus lock
  Documentation/x86: Add buslock.rst
2021-06-28 13:30:02 -07:00
..
acpi
x86/cstate: Allow ACPI C1 FFH MWAIT use on Hygon systems
2021-05-31 10:47:04 +02:00
apic
x86/apic: Mark _all_ legacy interrupts when IO/APIC is missing
2021-05-29 11:41:14 +02:00
cpu
Changes in this cycle were:
2021-06-28 13:30:02 -07:00
fpu
x86/fpu: Make init_fpstate correct with optimized XSAVE
2021-06-22 11:06:21 +02:00
kprobes
Misc cleanups & removal of obsolete code.
2021-06-28 13:10:25 -07:00
.gitignore
…
alternative.c
Linux 5.13-rc5
2021-06-07 11:02:30 +02:00
amd_gart_64.c
dma-mapping: split <linux/dma-mapping.h>
2020-10-06 07:07:03 +02:00
amd_nb.c
x86/amd_nb: Add AMD family 19h model 50h PCI ids
2021-05-21 12:01:38 +02:00
aperture_64.c
…
apm_32.c
x86: Fix various typos in comments, take #2
2021-03-21 23:50:28 +01:00
asm-offsets_32.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
asm-offsets_64.c
x86/xen: Drop USERGS_SYSRET64 paravirt call
2021-02-10 12:32:07 +01:00
asm-offsets.c
x86/paravirt: Switch iret pvops to ALTERNATIVE
2021-03-11 19:58:54 +01:00
audit_64.c
…
bootflag.c
…
check.c
…
cpuid.c
smp: Cleanup smp_call_function*()
2020-11-24 16:47:49 +01:00
crash_core_32.c
…
crash_core_64.c
…
crash_dump_32.c
x86/crashdump/32: Simplify copy_oldmem_page()
2020-11-24 14:42:09 +01:00
crash_dump_64.c
…
crash.c
x86/crash: Remove crash_reserve_low_1M()
2021-06-07 12:14:45 +02:00
devicetree.c
x86/devicetree: Fix the ioapic interrupt type table
2020-10-28 20:26:24 +01:00
doublefault_32.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
dumpstack_32.c
…
dumpstack_64.c
x86/irq/64: Adjust the per CPU irq stack pointer by 8
2021-02-10 23:34:14 +01:00
dumpstack.c
- Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in the end
2020-12-14 13:45:26 -08:00
e820.c
Power management updates for 5.13-rc1
2021-04-26 15:10:25 -07:00
early_printk.c
…
early-quirks.c
x86/gpu: Add Alderlake-S stolen memory support
2021-01-26 06:55:09 -08:00
ebda.c
…
eisa.c
…
espfix_64.c
…
ftrace_32.S
…
ftrace_64.S
x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S
2021-01-26 11:33:02 -06:00
ftrace.c
x86: Remove dynamic NOP selection
2021-03-15 16:24:59 +01:00
head32.c
…
head64.c
x86/sev-es: Rename sev-es.{ch} to sev.{ch}
2021-05-10 07:40:27 +02:00
head_32.S
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
head_64.S
x86/entry: Unify definitions from <asm/calling.h> and <asm/ptrace-abi.h>
2021-05-12 10:49:13 +02:00
hpet.c
x86/hpet: Use irq_find_matching_fwspec() to find remapping irqdomain
2020-10-28 20:26:28 +01:00
hw_breakpoint.c
x86/debug: Prevent data breakpoints on cpu_dr7
2021-02-05 20:13:12 +01:00
i8237.c
…
i8253.c
…
i8259.c
x86/i8259: Use printk_deferred() to prevent deadlock
2020-07-29 16:27:16 +02:00
idt.c
x86/idt: Rework IDT setup for boot CPU
2021-05-18 14:49:21 +02:00
io_delay.c
…
ioport.c
…
irq_32.c
softirq: Move do_softirq_own_stack() to generic asm header
2021-02-10 23:34:16 +01:00
irq_64.c
x86/softirq/64: Inline do_softirq_own_stack()
2021-02-10 23:34:17 +01:00
irq_work.c
…
irq.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
irqflags.S
x86/pv: Rework arch_local_irq_restore() to not use popf
2021-02-10 12:36:45 +01:00
irqinit.c
x86/headers: Remove APIC headers from <asm/smp.h>
2020-08-06 16:13:09 +02:00
itmt.c
…
jailhouse.c
locking/seqlock, headers: Untangle the spaghetti monster
2020-08-06 16:13:13 +02:00
jump_label.c
jump_label/x86: Remove unused JUMP_LABEL_NOP_SIZE
2021-05-14 09:00:09 +02:00
kdebugfs.c
…
kexec-bzimage64.c
x86: Use ELF fields defined in 'struct kimage'
2021-03-08 12:06:29 -07:00
kgdb.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
ksysfs.c
…
kvm.c
x86/kvm: Unify kvm_pv_guest_cpu_reboot() with kvm_guest_cpu_offline()
2021-05-07 06:06:11 -04:00
kvmclock.c
x86/kvm: Disable all PV features on crash
2021-05-07 06:06:10 -04:00
ldt.c
x86/ldt: Use tlb_gather_mmu_fullmm() when freeing LDT page-tables
2021-01-29 20:02:29 +01:00
machine_kexec_32.c
…
machine_kexec_64.c
Devicetree updates for v5.13:
2021-04-28 15:50:24 -07:00
Makefile
x86/sev-es: Rename sev-es.{ch} to sev.{ch}
2021-05-10 07:40:27 +02:00
mmconf-fam10h_64.c
x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG
2021-05-10 07:51:38 +02:00
module.c
x86/build: Treat R_386_PLT32 relocation as R_386_PC32
2021-01-28 12:24:06 +01:00
mpparse.c
Surgery of the MSI interrupt handling to prepare the support of upcoming
2020-10-12 11:40:41 -07:00
msr.c
x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too
2021-01-27 19:06:47 +01:00
nmi_selftest.c
…
nmi.c
x86/sev-es: Rename sev-es.{ch} to sev.{ch}
2021-05-10 07:40:27 +02:00
paravirt-spinlocks.c
x86/paravirt: Add new features for paravirt patching
2021-03-11 19:51:49 +01:00
paravirt.c
The x86 MM changes in this cycle were:
2021-04-29 11:41:43 -07:00
pci-dma.c
dma-mapping: move dma-debug.h to kernel/dma/
2020-10-06 07:07:05 +02:00
pci-iommu_table.c
x86: Remove definition of DEBUG
2021-01-15 08:23:10 +01:00
pci-swiotlb.c
…
pcspeaker.c
…
perf_regs.c
- Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in the end
2020-12-14 13:45:26 -08:00
platform-quirks.c
…
pmem.c
…
probe_roms.c
…
process_32.c
x86/dumpstack: Add log_lvl to __show_regs()
2020-07-22 23:56:53 +02:00
process_64.c
x86/irq: Sanitize irq stack tracking
2021-02-10 23:34:13 +01:00
process.c
sched: Introduce task_is_running()
2021-06-18 11:43:07 +02:00
process.h
…
ptrace.c
x86/regs: Syscall_get_nr() returns -1 for a non-system call
2021-05-12 10:49:15 +02:00
pvclock.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
quirks.c
x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()
2020-10-06 11:18:04 +02:00
reboot_fixups_32.c
…
reboot.c
x86:
2021-02-21 13:31:43 -08:00
relocate_kernel_32.S
x86: Fix various typos in comments, take #2
2021-03-21 23:50:28 +01:00
relocate_kernel_64.S
x86: Fix various typos in comments, take #2
2021-03-21 23:50:28 +01:00
resource.c
…
rtc.c
…
setup_percpu.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
setup.c
x86/setup: Document that Windows reserves the first MiB
2021-06-08 22:26:43 +02:00
sev_verify_cbit.S
x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path
2020-10-29 18:06:52 +01:00
sev-shared.c
x86/sev-es: Invalidate the GHCB after completing VMGEXIT
2021-05-18 07:06:29 +02:00
sev.c
x86/sev: Use "SEV: " prefix for messages from sev.c
2021-06-23 11:56:18 +02:00
signal_compat.c
signal: Deliver all of the siginfo perf data in _perf
2021-05-18 16:20:54 -05:00
signal.c
x86/regs: Syscall_get_nr() returns -1 for a non-system call
2021-05-12 10:49:15 +02:00
smp.c
x86: Fix various typos in comments, take #2
2021-03-21 23:50:28 +01:00
smpboot.c
CPU setup code changes:
2021-06-28 12:46:30 -07:00
stacktrace.c
stacktrace: Move documentation for arch_stack_walk_reliable() to header
2021-03-10 15:52:31 +01:00
static_call.c
x86: Remove dynamic NOP selection
2021-03-15 16:24:59 +01:00
step.c
entry: Ensure trap after single-step on system call return
2021-02-06 00:21:42 +01:00
sys_ia32.c
x86: switch to kernel_clone()
2020-08-20 13:12:58 +02:00
sys_x86_64.c
x86/mm: Refine mmap syscall implementation
2021-01-05 19:07:42 +01:00
sysfb_efi.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
sysfb_simplefb.c
…
sysfb.c
…
tboot.c
x86/boot/tboot: Avoid Wstringop-overread-warning
2021-03-23 00:16:13 +01:00
time.c
…
tls.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
tls.h
x86: switch to ->regset_get()
2020-07-27 14:31:07 -04:00
topology.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
trace_clock.c
…
tracepoint.c
…
traps.c
x86/idt: Rework IDT setup for boot CPU
2021-05-18 14:49:21 +02:00
tsc_msr.c
Misc fixes and small updates all around the place:
2020-08-15 10:38:03 -07:00
tsc_sync.c
x86: Fix various typos in comments, take #2
2021-03-21 23:50:28 +01:00
tsc.c
Trivial cleanups and fixes all over the place.
2021-04-26 09:25:47 -07:00
umip.c
x86/insn: Extend error reporting from insn_fetch_from_user[_inatomic]()
2021-06-15 11:39:30 +02:00
unwind_frame.c
fork-v5.9
2020-08-04 14:47:45 -07:00
unwind_guess.c
…
unwind_orc.c
x86/unwind/orc: Silence warnings caused by missing ORC data
2021-03-06 13:09:45 +01:00
uprobes.c
x86/uprobes: Convert to insn_decode()
2021-03-15 12:05:03 +01:00
verify_cpu.S
…
vm86_32.c
x86/vm86/32: Remove VM86_SCREEN_BITMAP support
2021-01-21 20:08:53 +01:00
vmlinux.lds.S
x86/build: Fix vmlinux size check on 64-bit
2020-10-29 21:54:35 +01:00
vsmp_64.c
…
x86_init.c
x86/apic: Support 15 bits of APIC ID in MSI where available
2020-10-28 20:26:29 +01:00