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authorBorislav Petkov <bp@suse.de>2017-01-20 21:29:48 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-23 10:02:48 +0100
commit3da9b41794590022d09caa345aaa7c812ac22971 (patch)
tree5d2dc9dcb057d47ed87defe3920bc3cff5c0f9fa /arch/x86/kernel/cpu
parentx86/microcode: Decrease CPUID use (diff)
downloadlinux-3da9b41794590022d09caa345aaa7c812ac22971.tar.xz
linux-3da9b41794590022d09caa345aaa7c812ac22971.zip
x86/microcode/AMD: Get rid of global this_equiv_id
We have a container which we update/prepare each time before applying a microcode patch instead of using a global. Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170120202955.4091-10-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r--arch/x86/kernel/cpu/microcode/amd.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 9fb398e64b0a..4cbfe70cf458 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -56,7 +56,6 @@ static struct cont_desc {
static u32 ucode_new_rev;
static u8 amd_ucode_patch[PATCH_MAX_SIZE];
-static u16 this_equiv_id;
/*
* Microcode patch container file is prepended to the initrd in cpio
@@ -228,8 +227,6 @@ apply_microcode_early_amd(u32 cpuid_1_eax, void *ucode, size_t size,
if (!desc.eq_id)
return ret;
- this_equiv_id = desc.eq_id;
-
mc = desc.mc;
if (!mc)
return ret;
@@ -375,7 +372,7 @@ reget:
if (!eq_id)
return;
- if (eq_id == this_equiv_id) {
+ if (eq_id == cont.eq_id) {
mc = (struct microcode_amd *)amd_ucode_patch;
if (mc && rev < mc->hdr.patch_id) {