diff options
Diffstat (limited to 'linux-kernel-patches/08-d8c3b52c00a05036e0a6b315b4b17921a7b67997.patch')
| -rw-r--r-- | linux-kernel-patches/08-d8c3b52c00a05036e0a6b315b4b17921a7b67997.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/linux-kernel-patches/08-d8c3b52c00a05036e0a6b315b4b17921a7b67997.patch b/linux-kernel-patches/08-d8c3b52c00a05036e0a6b315b4b17921a7b67997.patch new file mode 100644 index 0000000..66699ff --- /dev/null +++ b/linux-kernel-patches/08-d8c3b52c00a05036e0a6b315b4b17921a7b67997.patch @@ -0,0 +1,54 @@ +From d8c3b52c00a05036e0a6b315b4b17921a7b67997 Mon Sep 17 00:00:00 2001
+From: Borislav Petkov <bp@suse.de>
+Date: Wed, 28 Feb 2018 11:28:44 +0100
+Subject: x86/microcode/intel: Look into the patch cache first
+
+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>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
+Tested-by: Ashok Raj <ashok.raj@intel.com>
+Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
+Link: https://lkml.kernel.org/r/20180228102846.13447-6-bp@alien8.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 e2864bc..2aded9d 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;
+ }
+--
+cgit v1.1
+
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