Commit 81310ce4 authored by Uros Bizjak's avatar Uros Bizjak Committed by Ingo Molnar
Browse files

x86/process/64: Use savesegment() in __show_regs() instead of inline asm 



Replace direct 'movl' instructions for DS, ES, FS, and GS read in
__show_regs() with the savesegment() helper. This improves
readability, consistency, and ensures proper handling of
segment registers on x86_64.

No functional change intended.

Signed-off-by: default avatarUros Bizjak <ubizjak@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://patch.msgid.link/20260330085938.67985-2-ubizjak@gmail.com
parent 47d2f007

arch/x86/kernel/process_64.c

+4 −4
Original line number Diff line number Diff line
@@ -104,10 +104,10 @@ void __show_regs(struct pt_regs *regs, enum show_regs_mode mode, 
		return;

	}



	asm("movl %%ds,%0" : "=r" (ds));

	asm("movl %%es,%0" : "=r" (es));

	asm("movl %%fs,%0" : "=r" (fsindex));

	asm("movl %%gs,%0" : "=r" (gsindex));

	savesegment(ds, ds);

	savesegment(es, es);

	savesegment(fs, fsindex);

	savesegment(gs, gsindex);



	rdmsrq(MSR_FS_BASE, fs);

	rdmsrq(MSR_GS_BASE, gs);