x86/asm: Make serialize() always_inline

[ Upstream commit ae02ae16b76160f0aeeae2c5fb9b15226d00a4ef ]

In order to allow serialize() to be used from noinstr code, make it
__always_inline.

Fixes: 0ef8047b737d ("x86/static-call: provide a way to do very early static-call updates")
Closes: https://lore.kernel.org/oe-kbuild-all/202412181756.aJvzih2K-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20241218100918.22167-1-jgross@suse.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index 415693f5d909d6ea8a269bc53bca29b040075f38..ad828c6742d4edf09684ee36f1df317735bec448 100644 (file)
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -236,7 +236,7 @@ static inline void clwb(volatile void *__p)
 
 #define nop() asm volatile ("nop")
 
-static inline void serialize(void)
+static __always_inline void serialize(void)
 {
        /* Instruction opcode for SERIALIZE; supported in binutils >= 2.35. */
        asm volatile(".byte 0xf, 0x1, 0xe8" ::: "memory");