6.6-stable review patch. If anyone has any objections, please let me know.
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From: Juergen Gross jgross@suse.com
[ 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 --- arch/x86/include/asm/special_insns.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index 48f8dd47cf688..1c5513b04f038 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -217,7 +217,7 @@ static inline int write_user_shstk_64(u64 __user *addr, u64 val)
#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");