x86/split_lock: Remove dead string when split_lock_detect=fatal

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sld_state_show() has a dead str1 below:

  if (A) {
  	...
  } else if (B) {
  	pr_info(... A ? str1 : str2 ...);
  }

where A is always false in the second block, implied by the "if (A) else"
pattern. Hence, str2 is always used.

This seems to be some mysterious legacy inherited from the earlier patch
revisions of

  ebb1064e7c ("x86/traps: Handle #DB for bus lock").

Earlier revisions¹ did enable both sld and bld at the same time to detect
non-WB bus_locks when split_lock_detect=fatal, but that's no longer true in
the merged revision.

Remove it and translate the pr_info() into its equivalent form.

¹ https://lore.kernel.org/r/20201121023624.3604415-3-fenghua.yu@intel.com

  [ bp: Massage commit message; simplify braces ]

Signed-off-by: Rong Zhang <i@rong.moe>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251215182907.152881-1-i@rong.moe

...

This commit is contained in:

Rong Zhang 2025-12-16 02:11:51 +08:00 • committed by Borislav Petkov (AMD)

parent f8f9c1f4d0

commit 6823f10dcc

1 changed files with 3 additions and 6 deletions

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9

arch/x86/kernel/cpu/bus_lock.c

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