linux-kernel - [tip:x86/mce] x86/microcode/AMD: Get rid of global this_equiv

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Date:   Mon, 23 Jan 2017 01:11:21 -0800
From:   tip-bot for Borislav Petkov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, bp@...e.de,
        hpa@...or.com, tglx@...utronix.de
Subject: [tip:x86/mce] x86/microcode/AMD: Get rid of global this_equiv_id

Commit-ID:  3da9b41794590022d09caa345aaa7c812ac22971
Gitweb:     http://git.kernel.org/tip/3da9b41794590022d09caa345aaa7c812ac22971
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Fri, 20 Jan 2017 21:29:48 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Mon, 23 Jan 2017 10:02:48 +0100

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@...e.de>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/20170120202955.4091-10-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/kernel/cpu/microcode/amd.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 9fb398e..4cbfe70 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) {