diff mbox series

[tip:,x86/paravirt] x86/alternative: Correct feature bit debug output

Message ID 170393588213.398.4263924144760280684.tip-bot2@tip-bot2
State New
Headers
Series [tip:,x86/paravirt] x86/alternative: Correct feature bit debug output |

Commit Message

tip-bot2 for Thomas Gleixner Dec. 30, 2023, 11:31 a.m. UTC 
  The following commit has been merged into the x86/paravirt branch of tip:

Commit-ID:     7991ed43587d1106315208cc289c851d6915d4a3
Gitweb:        https://git.kernel.org/tip/7991ed43587d1106315208cc289c851d6915d4a3
Author:        Borislav Petkov (AMD) <bp@alien8.de>
AuthorDate:    Sat, 30 Dec 2023 12:20:04 +01:00
Committer:     Borislav Petkov (AMD) <bp@alien8.de>
CommitterDate: Sat, 30 Dec 2023 12:25:55 +01:00

x86/alternative: Correct feature bit debug output

In

  https://lore.kernel.org/r/20231206110636.GBZXBVvCWj2IDjVk4c@fat_crate.local

I wanted to adjust the alternative patching debug output to the new
changes introduced by

  da0fe6e68e10 ("x86/alternative: Add indirect call patching")

but removed the '*' which denotes the ->x86_capability word. The correct
output should be, for example:

  [    0.230071] SMP alternatives: feat: 11*32+15, old: (entry_SYSCALL_64_after_hwframe+0x5a/0x77 (ffffffff81c000c2) len: 16), repl: (ffffffff89ae896a, len: 5) flags: 0x0

while the incorrect one says "... 1132+15" currently.

Add back the '*'.

Fixes: da0fe6e68e10 ("x86/alternative: Add indirect call patching")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231206110636.GBZXBVvCWj2IDjVk4c@fat_crate.local
---
 arch/x86/kernel/alternative.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index f26983a..f7ea108 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -498,7 +498,7 @@  void __init_or_module noinline apply_alternatives(struct alt_instr *start,
 			continue;
 		}
 
-		DPRINTK(ALT, "feat: %d32+%d, old: (%pS (%px) len: %d), repl: (%px, len: %d) flags: 0x%x",
+		DPRINTK(ALT, "feat: %d*32+%d, old: (%pS (%px) len: %d), repl: (%px, len: %d) flags: 0x%x",
 			a->cpuid >> 5,
 			a->cpuid & 0x1f,
 			instr, instr, a->instrlen,