From 378ca2d2ad410a1cd5690d06b46c5e2297f4c8c0 Mon Sep 17 00:00:00 2001
From: Sumanth Korikkar <sumanthk@linux.ibm.com>
Date: Tue, 26 Mar 2024 18:12:13 +0100
Subject: s390/entry: align system call table on 8 bytes

Align system call table on 8 bytes. With sys_call_table entry size
of 8 bytes that eliminates the possibility of a system call pointer
crossing cache line boundary.

Cc: stable@kernel.org
Suggested-by: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---
 arch/s390/kernel/entry.S | 1 +
 1 file changed, 1 insertion(+)

(limited to 'arch')

diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 787394978bc0f8..3dc85638bc63b7 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -635,6 +635,7 @@ SYM_DATA_START_LOCAL(daton_psw)
 SYM_DATA_END(daton_psw)
 
 	.section .rodata, "a"
+	.balign	8
 #define SYSCALL(esame,emu)	.quad __s390x_ ## esame
 SYM_DATA_START(sys_call_table)
 #include "asm/syscall_table.h"
-- 
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