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x86/mce: Work around build warning after MSR-interface switch

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The recent switch to 64-bit MSR interfaces introduced a build warning.

Work it around with a __maybe_unused annotation. After the full conversion
of the APIs we'll be able to address this more robustly by making sure
the APIs consume all the values as far the compiler is concerned, so that
the compiler doesn't emit such nuisance warnings.

[ mingo: Updated the changelog. ]

Fixes: cff219368b ("x86/mce: Stop using 32-bit MSR interfaces")
Closes: https://lore.kernel.org/oe-kbuild-all/202607031726.ZOwu4snu-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20260703105555.1758819-1-jgross@suse.com
This commit is contained in:
Juergen Gross 2026-07-03 12:55:55 +02:00 committed by Ingo Molnar
parent e8caa0abfb
commit a7187ca1e7
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/mce/p5.c
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@ -44,7 +44,7 @@ noinstr void pentium_machine_check(struct pt_regs *regs)
/* Set up machine check reporting for processors with Intel style MCE: */
void intel_p5_mcheck_init(struct cpuinfo_x86 *c)
{
u64 q;
u64 __maybe_unused q;
/* Default P5 to off as its often misconnected: */
if (!mce_p5_enabled)