linux-kernel - [tip: x86/urgent] x86/asm: Make serialize() always

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Message-ID: <173704363150.31546.14331192307031815487.tip-bot2@tip-bot2>
Date: Thu, 16 Jan 2025 16:07:11 -0000
From: "tip-bot2 for Juergen Gross" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: kernel test robot <lkp@...el.com>, Juergen Gross <jgross@...e.com>,
 "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/urgent] x86/asm: Make serialize() always_inline

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     ae02ae16b76160f0aeeae2c5fb9b15226d00a4ef
Gitweb:        https://git.kernel.org/tip/ae02ae16b76160f0aeeae2c5fb9b15226d00a4ef
Author:        Juergen Gross <jgross@...e.com>
AuthorDate:    Wed, 18 Dec 2024 11:09:18 +01:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Thu, 16 Jan 2025 16:51:17 +01:00

x86/asm: Make serialize() always_inline

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@...el.com>
Signed-off-by: Juergen Gross <jgross@...e.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/r/20241218100918.22167-1-jgross@suse.com
---
 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 aec6e2d..98bfc09 100644
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -217,7 +217,7 @@ fail:
 
 #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");