Commit 485b5d1d authored Mar 26, 2024 by Sumanth Korikkar Committed by Greg Kroah-Hartman Apr 13, 2024

s390/entry: align system call table on 8 bytes



commit 378ca2d2ad410a1cd5690d06b46c5e2297f4c8c0 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 976b1b26

arch/s390/kernel/entry.S

+1 −0

Original line number	Diff line number	Diff line
		@@ -1542,6 +1542,7 @@ ENDPROC(cleanup_critical)
		.quad .Lsie_skip - .Lsie_entry
		#endif
		.section .rodata, "a"
		.balign 8
		#define SYSCALL(esame,emu) .quad __s390x_ ## esame
		.globl sys_call_table
		sys_call_table: