This is a note to let you know that I've just added the patch titled
x86/asm: Make serialize() always_inline
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-asm-make-serialize-always_inline.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f3e8d5d9703406118aba379cb612c28ef29c8eb1
Author: Juergen Gross <jgross@xxxxxxxx>
Date: Wed Dec 18 11:09:18 2024 +0100
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@xxxxxxxxx/
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Link: https://lore.kernel.org/r/20241218100918.22167-1-jgross@xxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index 415693f5d909d..ad828c6742d4e 100644
--- 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");
