linux-kernel - [PATCH v2 2/9] x86/cpu/amd: Ifdef 32bit only assembler for 32bit

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Message-Id: <20190330004743.29541-2-andi@firstfloor.org>
Date:   Fri, 29 Mar 2019 17:47:36 -0700
From:   Andi Kleen <andi@...stfloor.org>
To:     x86@...nel.org
Cc:     linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH v2 2/9] x86/cpu/amd: Ifdef 32bit only assembler for 32bit

From: Andi Kleen <ak@...ux.intel.com>

The "vide" inline assembler is only needed on 32bit kernels for old
32bit only CPUs.  Ifdef it to not include it into 64bit kernels.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 arch/x86/kernel/cpu/amd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 1bcb489e07e7..fb6a64bd765f 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -82,12 +82,14 @@ static inline int wrmsrl_amd_safe(unsigned msr, unsigned long long val)
  *	performance at the same time..
  */
 
+#ifdef CONFIG_X86_32
 extern __visible void vide(void);
 __asm__(".text\n"
 	".globl vide\n"
 	".type vide, @function\n"
 	".align 4\n"
 	"vide: ret\n");
+#endif
 
 static void init_amd_k5(struct cpuinfo_x86 *c)
 {
-- 
2.20.1