mirror of
https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files.git
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55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From d8c3b52c00a05036e0a6b315b4b17921a7b67997 Mon Sep 17 00:00:00 2001
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From: Borislav Petkov <bp@suse.de>
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Date: Wed, 28 Feb 2018 11:28:44 +0100
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Subject: x86/microcode/intel: Look into the patch cache first
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The cache might contain a newer patch - look in there first.
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A follow-on change will make sure newest patches are loaded into the
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cache of microcode patches.
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Signed-off-by: Borislav Petkov <bp@suse.de>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
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Tested-by: Ashok Raj <ashok.raj@intel.com>
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Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
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Link: https://lkml.kernel.org/r/20180228102846.13447-6-bp@alien8.de
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---
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arch/x86/kernel/cpu/microcode/intel.c | 11 +++++------
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1 file changed, 5 insertions(+), 6 deletions(-)
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diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
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index e2864bc..2aded9d 100644
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--- a/arch/x86/kernel/cpu/microcode/intel.c
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+++ b/arch/x86/kernel/cpu/microcode/intel.c
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@@ -791,9 +791,9 @@ static int collect_cpu_info(int cpu_num, struct cpu_signature *csig)
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static enum ucode_state apply_microcode_intel(int cpu)
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{
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- struct microcode_intel *mc;
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- struct ucode_cpu_info *uci;
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+ struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
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struct cpuinfo_x86 *c = &cpu_data(cpu);
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+ struct microcode_intel *mc;
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static int prev_rev;
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u32 rev;
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@@ -801,11 +801,10 @@ static enum ucode_state apply_microcode_intel(int cpu)
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if (WARN_ON(raw_smp_processor_id() != cpu))
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return UCODE_ERROR;
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- uci = ucode_cpu_info + cpu;
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- mc = uci->mc;
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+ /* Look for a newer patch in our cache: */
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+ mc = find_patch(uci);
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if (!mc) {
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- /* Look for a newer patch in our cache: */
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- mc = find_patch(uci);
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+ mc = uci->mc;
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if (!mc)
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return UCODE_NFOUND;
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}
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--
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cgit v1.1
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