From 4348e9177813656d5d8bd18f34b3e611df004032 Mon Sep 17 00:00:00 2001 From: "Borislav Petkov (AMD)" Date: Mon, 17 Mar 2025 13:47:12 +0100 Subject: [PATCH] x86/fpu: Clarify the "xa" symbolic name used in the XSTATE* macros 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) --- arch/x86/kernel/fpu/xstate.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/fpu/xstate.h b/arch/x86/kernel/fpu/xstate.h index 1418423bc4c9..0fd34f53f025 100644 --- a/arch/x86/kernel/fpu/xstate.h +++ b/arch/x86/kernel/fpu/xstate.h @@ -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" \