x86/cpu: Make alternative_msr_write work for 32-bit code

[linux-2.6-block.git] / arch / x86 / include / asm / nospec-branch.h

diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index 328ea3cb769f85097f9fc7489bf38984aa9993b4..bc258e644e5e8b3cc814f103f24ad522cc040eea 100644 (file)
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -265,8 +265,8 @@ void alternative_msr_write(unsigned int msr, u64 val, unsigned int feature)
 {
        asm volatile(ALTERNATIVE("", "wrmsr", %c[feature])
                : : "c" (msr),
-                   "a" (val),
-                   "d" (val >> 32),
+                   "a" ((u32)val),
+                   "d" ((u32)(val >> 32)),
                    [feature] "i" (feature)
                : "memory");
 }