Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 5/7] x86/microcode/intel: Look into the patch cache first | Date | Wed, 28 Feb 2018 11:28:44 +0100 |
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From: Borislav Petkov <bp@suse.de>
The cache might contain a newer patch - look in there first.
A follow-on change will make sure newest patches are loaded into the cache of microcode patches.
Signed-off-by: Borislav Petkov <bp@suse.de> --- arch/x86/kernel/cpu/microcode/intel.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c index e2864bc2d575..2aded9db1d42 100644 --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -791,9 +791,9 @@ static int collect_cpu_info(int cpu_num, struct cpu_signature *csig) static enum ucode_state apply_microcode_intel(int cpu) { - struct microcode_intel *mc; - struct ucode_cpu_info *uci; + struct ucode_cpu_info *uci = ucode_cpu_info + cpu; struct cpuinfo_x86 *c = &cpu_data(cpu); + struct microcode_intel *mc; static int prev_rev; u32 rev; @@ -801,11 +801,10 @@ static enum ucode_state apply_microcode_intel(int cpu) if (WARN_ON(raw_smp_processor_id() != cpu)) return UCODE_ERROR; - uci = ucode_cpu_info + cpu; - mc = uci->mc; + /* Look for a newer patch in our cache: */ + mc = find_patch(uci); if (!mc) { - /* Look for a newer patch in our cache: */ - mc = find_patch(uci); + mc = uci->mc; if (!mc) return UCODE_NFOUND; } -- 2.13.0
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