From: Borislav Petkov <bp@alien8.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: X86 ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
Borislav Petkov <bp@suse.de>
Subject: [PATCH 2/6] x86, cpu: Convert F00F bug detection
Date: Wed, 20 Mar 2013 15:07:24 +0100 [thread overview]
Message-ID: <1363788448-31325-3-git-send-email-bp@alien8.de> (raw)
In-Reply-To: <1363788448-31325-1-git-send-email-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
... to using the new facility and drop the cpuinfo_x86 member.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/cpufeature.h | 2 ++
arch/x86/include/asm/processor.h | 1 -
arch/x86/kernel/cpu/intel.c | 4 ++--
arch/x86/kernel/cpu/proc.c | 2 +-
arch/x86/mm/fault.c | 2 +-
5 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 16190abd8905..c0ad7e75815c 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -222,6 +222,8 @@
*/
#define X86_BUG(x) (NCAPINTS*32 + (x))
+#define X86_BUG_F00F X86_BUG(0) /* Intel F00F */
+
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#include <asm/asm.h>
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 23c8081d3870..1e55e2d543b5 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -92,7 +92,6 @@ struct cpuinfo_x86 {
char hard_math;
char rfu;
char fdiv_bug;
- char f00f_bug;
char coma_bug;
char pad0;
#else
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 1905ce98bee0..1acdd42d86d1 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -209,11 +209,11 @@ static void __cpuinit intel_workarounds(struct cpuinfo_x86 *c)
* system.
* Note that the workaround only should be initialized once...
*/
- c->f00f_bug = 0;
+ clear_cpu_bug(c, X86_BUG_F00F);
if (!paravirt_enabled() && c->x86 == 5) {
static int f00f_workaround_enabled;
- c->f00f_bug = 1;
+ set_cpu_bug(c, X86_BUG_F00F);
if (!f00f_workaround_enabled) {
trap_init_f00f_bug();
printk(KERN_NOTICE "Intel Pentium with F0 0F bug - workaround enabled.\n");
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index e280253f6f94..2d60b2bec01c 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -35,7 +35,7 @@ static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
"cpuid level\t: %d\n"
"wp\t\t: %s\n",
c->fdiv_bug ? "yes" : "no",
- c->f00f_bug ? "yes" : "no",
+ static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no",
c->coma_bug ? "yes" : "no",
c->hard_math ? "yes" : "no",
c->hard_math ? "yes" : "no",
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index fa8c02de0d25..3da69dbc0185 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -555,7 +555,7 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
/*
* Pentium F0 0F C7 C8 bug workaround:
*/
- if (boot_cpu_data.f00f_bug) {
+ if (boot_cpu_has_bug(X86_BUG_F00F)) {
nr = (address - idt_descr.address) >> 3;
if (nr == 6) {
--
1.8.1.3.535.ga923c31
next prev parent reply other threads:[~2013-03-20 14:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-20 14:07 [PATCH 0/6] x86, cpu: Expand ->x86_capability flags with bugs bitvector, v2 Borislav Petkov
2013-03-20 14:07 ` [PATCH 1/6] x86, cpu: Expand cpufeature facility to include cpu bugs Borislav Petkov
2013-04-02 19:32 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
2013-03-20 14:07 ` Borislav Petkov [this message]
2013-04-02 19:33 ` [tip:x86/cpu] x86, cpu: Convert F00F bug detection tip-bot for Borislav Petkov
2013-03-20 14:07 ` [PATCH 3/6] x86, cpu: Convert FDIV " Borislav Petkov
2013-04-02 19:34 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
2013-03-20 14:07 ` [PATCH 4/6] x86, cpu: Convert Cyrix coma " Borislav Petkov
2013-04-02 19:36 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
2013-03-20 14:07 ` [PATCH 5/6] x86, cpu: Convert AMD Erratum 383 Borislav Petkov
2013-04-02 19:37 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
2013-03-20 14:07 ` [PATCH 6/6] x86, cpu: Convert AMD Erratum 400 Borislav Petkov
2013-04-02 19:38 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
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