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x86/tls: Clean up 'sel' variable usage in do_set_thread_area()

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The top-level 'sel' variable in do_set_thread_area() was previously
marked __maybe_unused, but it is now only needed locally when
updating the current task.

Remove the unused top-level declaration and introduce a local 'sel'
variable where it is actually used

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/20260330085938.67985-4-ubizjak@gmail.com
This commit is contained in:
Uros Bizjak 2026-03-30 10:59:23 +02:00 committed by Ingo Molnar
parent 6829f19810
commit 3b19e22cff
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kernel/tls.c
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@ -117,7 +117,7 @@ int do_set_thread_area(struct task_struct *p, int idx,
int can_allocate)
{
struct user_desc info;
unsigned short __maybe_unused sel, modified_sel;
unsigned short modified_sel;
if (copy_from_user(&info, u_info, sizeof(info)))
return -EFAULT;
@ -153,6 +153,8 @@ int do_set_thread_area(struct task_struct *p, int idx,
modified_sel = (idx << 3) | 3;
if (p == current) {
unsigned short sel;
#ifdef CONFIG_X86_64
savesegment(ds, sel);
if (sel == modified_sel)