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x86/fpu: Clarify the "xa" symbolic name used in the XSTATE* macros

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Tie together the %[xa] in the XSAVE/XRSTOR definitions with the
respective usage in the asm macros so that it is perfectly clear.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
This commit is contained in:
Borislav Petkov (AMD) 2025-03-17 13:47:12 +01:00
parent 2883b4c216
commit 4348e91778
1 changed files with 4 additions and 0 deletions
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4
arch/x86/kernel/fpu/xstate.h
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@ -109,6 +109,10 @@ static inline int update_pkru_in_sigframe(struct xregs_state __user *buf, u64 ma
/*
* After this @err contains 0 on success or the trap number when the
* operation raises an exception.
*
* The [xa] input parameter below represents the struct xregs_state pointer
* and the asm symbolic name for the argument used in the XSAVE/XRSTOR insns
* above.
*/
#define XSTATE_OP(op, st, lmask, hmask, err) \
asm volatile("1:" op "\n\t" \