linux-kernel - [PATCH v5 03/12] x86/common.c: Make have_cpuid

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Message-Id: <1356075872-3054-4-git-send-email-fenghua.yu@intel.com>
Date:	Thu, 20 Dec 2012 23:44:23 -0800
From:	"Fenghua Yu" <fenghua.yu@...el.com>
To:	"H Peter Anvin" <hpa@...or.com>, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Asit K Mallick" <asit.k.mallick@...el.com>,
	"Tigran Aivazian" <tigran@...azian.fsnet.co.uk>,
	"Yinghai Lu" <yinghai@...nel.org>,
	"Andreas Herrmann" <andreas.herrmann3@....com>,
	"Borislav Petkov" <borislav.petkov@....com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"x86" <x86@...nel.org>
Cc:	"Fenghua Yu" <fenghua.yu@...el.com>
Subject: [PATCH v5 03/12] x86/common.c: Make have_cpuid_p() a global function

From: Fenghua Yu <fenghua.yu@...el.com>

Remove static declaration in have_cpuid_p() to make it a global function. The
function will be called in early loading microcode.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
---
 arch/x86/include/asm/processor.h | 8 ++++++++
 arch/x86/kernel/cpu/common.c     | 9 +++------
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 888184b..3d722fd 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -190,6 +190,14 @@ extern void init_amd_cacheinfo(struct cpuinfo_x86 *c);
 extern void detect_extended_topology(struct cpuinfo_x86 *c);
 extern void detect_ht(struct cpuinfo_x86 *c);
 
+#ifdef CONFIG_X86_32
+extern int have_cpuid_p(void);
+#else
+static inline int have_cpuid_p(void)
+{
+	return 1;
+}
+#endif
 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
 				unsigned int *ecx, unsigned int *edx)
 {
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 9c3ab43..d7fd246 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -37,6 +37,8 @@
 #include <asm/mce.h>
 #include <asm/msr.h>
 #include <asm/pat.h>
+#include <asm/microcode.h>
+#include <asm/microcode_intel.h>
 
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/uv/uv.h>
@@ -213,7 +215,7 @@ static inline int flag_is_changeable_p(u32 flag)
 }
 
 /* Probe for the CPUID instruction */
-static int __cpuinit have_cpuid_p(void)
+int __cpuinit have_cpuid_p(void)
 {
 	return flag_is_changeable_p(X86_EFLAGS_ID);
 }
@@ -249,11 +251,6 @@ static inline int flag_is_changeable_p(u32 flag)
 {
 	return 1;
 }
-/* Probe for the CPUID instruction */
-static inline int have_cpuid_p(void)
-{
-	return 1;
-}
 static inline void squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
 {
 }
-- 
1.8.0.1

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