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linux/arch/x86/include
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Linus Torvalds 968966c282 Miscellaneous x86 fixes: 
- Make the clearcpuid= boot parameter less prominent
    and warn about its dangers & caveats (Borislav Petkov)
 
  - Do not access the (new) PLATFORM_ID MSR when running as a guest
    (Borislav Petkov)
 
  - x86 ftrace: Relocate %rip-relative percpu refs in dynamic
    trampolines, to fix crash when using such trampolines
    (Alexis Lothoré)
 
  - Fix x86-64 CFI build error (Peter Zijlstra)
 
  - Revert FPU signal return magic number check optimization, because
    it broke CRIU and gVisor in certain FPU configurations
    (Andrei Vagin)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-05-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:

 - Make the clearcpuid= boot parameter less prominent
   and warn about its dangers & caveats (Borislav Petkov)

 - Do not access the (new) PLATFORM_ID MSR when running
   as a guest (Borislav Petkov)

 - x86 ftrace: Relocate %rip-relative percpu refs in dynamic
   trampolines, to fix crash when using such trampolines
   (Alexis Lothoré)

 - Fix x86-64 CFI build error (Peter Zijlstra)

 - Revert FPU signal return magic number check optimization,
   because it broke CRIU and gVisor in certain FPU configurations
   (Andrei Vagin)

* tag 'x86-urgent-2026-05-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "x86/fpu: Refine and simplify the magic number check during signal return"
  x86/kvm/vmx: Fix x86_64 CFI build
  x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines
  x86/microcode: Do not access MSR_IA32_PLATFORM_ID when running as a guest
  Documentation/arch/x86: Hide clearcpuid=
History 2026-05-31 08:52:16 -07:00
..
asm Miscellaneous x86 fixes: 2026-05-31 08:52:16 -07:00
uapi/asm KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs 2026-03-12 10:56:10 -07:00