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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - MCE related boot crash fix on certain AMD systems

   - FPU exception handling fix

   - FPU handling race fix

   - revert+rewrite of the RSDP boot protocol extension, use boot_params
     instead

   - documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/MCE/AMD: Fix the thresholding machinery initialization order
  x86/fpu: Use the correct exception table macro in the XSTATE_OP wrapper
  x86/fpu: Disable bottom halves while loading FPU registers
  x86/acpi, x86/boot: Take RSDP address from boot params if available
  x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header")
  x86/ptrace: Fix documentation for tracehook_report_syscall_entry()
This commit is contained in:
Linus Torvalds
2018-11-30 11:34:25 -08:00
parent a1b3cf6d94 60c8144afc
commit 1ec63573b2
12 changed files with 16 additions and 82 deletions
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4
include/linux/tracehook.h
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@@ -83,8 +83,8 @@ static inline int ptrace_report_syscall(struct pt_regs *regs)
* tracehook_report_syscall_entry - task is about to attempt a system call
* @regs: user register state of current task
*
* This will be called if %TIF_SYSCALL_TRACE has been set, when the
* current task has just entered the kernel for a system call.
* This will be called if %TIF_SYSCALL_TRACE or %TIF_SYSCALL_EMU have been set,
* when the current task has just entered the kernel for a system call.
* Full user register state is available here. Changing the values
* in @regs can affect the system call number and arguments to be tried.
* It is safe to block here, preventing the system call from beginning.