moonjuice/kernel_arpi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86: Prepare inline-asm for straight-line-speculation

Browse Source 
[ Upstream commit b17c2baa305cccbd16bafa289fd743cc2db77966 ]

Replace all ret/retq instructions with ASM_RET in preparation of
making it more than a single instruction.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20211204134907.964635458@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Zijlstra
2021-12-04 14:43:41 +01:00
committed by Greg Kroah-Hartman
parent 14b476e07f
commit a467f694a4
11 changed files with 18 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/lib/error-inject.c
View File

@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/linkage.h>
#include <linux/error-injection.h>
#include <linux/kprobes.h>
@@ -10,7 +11,7 @@ asm(
".type just_return_func, @function\n"
".globl just_return_func\n"
"just_return_func:\n"
" ret\n"
ASM_RET
".size just_return_func, .-just_return_func\n"
);