Merge tag 'x86_pasid_for_5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

[linux-2.6-microblaze.git] / arch / x86 / include / asm / special_insns.h

diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index 5482c2d..94624fb 100644 (file)
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -234,6 +234,12 @@ static inline void clwb(volatile void *__p)
 
 #define nop() asm volatile ("nop")
 
+static inline void serialize(void)
+{
+       /* Instruction opcode for SERIALIZE; supported in binutils >= 2.35. */
+       asm volatile(".byte 0xf, 0x1, 0xe8" ::: "memory");
+}
+
 /* The dst parameter must be 64-bytes aligned */
 static inline void movdir64b(void *dst, const void *src)
 {