[PATCH -tip 2/4] x86/process/64: Use savesegment() in __show_regs() instead of inline asm

[Uros Bizjak <ubizjak@gmail.com>]

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>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
---
 arch/x86/kernel/process_64.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 08e72f429870..b85e715ebb30 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -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);
-- 
2.53.0