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x86/microcode/intel: Do not retry microcode reloading on the APs

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commit be1b670f61443aa5d0d01782e9b8ea0ee825d018 upstream.

The retries in load_ucode_intel_ap() were in place to support systems
with mixed steppings. Mixed steppings are no longer supported and there is
only one microcode image at a time. Any retries will simply reattempt to
apply the same image over and over without making progress.

  [ bp: Zap the circumstantial reasoning from the commit message. ]

Fixes: 06b8534cb7 ("x86/microcode: Rework microcode loading")
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221129210832.107850-3-ashok.raj@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ashok Raj 2022-11-29 13:08:27 -08:00 committed by Greg Kroah-Hartman
parent cf79d5410a
commit f5489d5a24
1 changed files with 1 additions and 7 deletions
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8
arch/x86/kernel/cpu/microcode/intel.c
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@ -659,7 +659,6 @@ void load_ucode_intel_ap(void)
else else
iup = &intel_ucode_patch; iup = &intel_ucode_patch;
reget:
if (!*iup) { if (!*iup) {
patch = __load_ucode_intel(&uci); patch = __load_ucode_intel(&uci);
if (!patch) if (!patch)
@ -670,12 +669,7 @@ reget:
uci.mc = *iup; uci.mc = *iup;
if (apply_microcode_early(&uci, true)) { apply_microcode_early(&uci, true);
/* Mixed-silicon system? Try to refetch the proper patch: */
*iup = NULL;
goto reget;
}
} }
static struct microcode_intel *find_patch(struct ucode_cpu_info *uci) static struct microcode_intel *find_patch(struct ucode_cpu_info *uci)