github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-04 20:46:48 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

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

Browse Source 
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: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo 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
This commit is contained in:
Uros Bizjak 2026-03-30 10:59:21 +02:00 committed by Ingo Molnar
parent 47d2f00761
commit 81310ce428
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/kernel/process_64.c
View File

@ -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);