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| author | Peter Zijlstra <peterz@infradead.org> | 2021-12-04 14:43:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-25 11:26:29 +0200 |
| commit | 277f4ddc36c578691678b8ae59b60d76ad15fa1b (patch) | |
| tree | e7d65fedc97af3c810e4faa5affd0d488de25c55 /samples | |
| parent | 3c91e2257622c169bf74d587e48b96923285ed74 (diff) | |
| download | linux-stable-277f4ddc36c578691678b8ae59b60d76ad15fa1b.tar.gz linux-stable-277f4ddc36c578691678b8ae59b60d76ad15fa1b.tar.bz2 linux-stable-277f4ddc36c578691678b8ae59b60d76ad15fa1b.zip | |
x86: Prepare inline-asm for straight-line-speculation
commit b17c2baa305cccbd16bafa289fd743cc2db77966 upstream.
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>
[bwh: Backported to 5.10: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/ftrace/ftrace-direct-modify.c | 4 | ||||
| -rw-r--r-- | samples/ftrace/ftrace-direct-too.c | 2 | ||||
| -rw-r--r-- | samples/ftrace/ftrace-direct.c | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c index 89e6bf27cd9f..d620f3da086f 100644 --- a/samples/ftrace/ftrace-direct-modify.c +++ b/samples/ftrace/ftrace-direct-modify.c @@ -31,7 +31,7 @@ asm ( " call my_direct_func1\n" " leave\n" " .size my_tramp1, .-my_tramp1\n" -" ret\n" + ASM_RET " .type my_tramp2, @function\n" " .globl my_tramp2\n" " my_tramp2:" @@ -39,7 +39,7 @@ asm ( " movq %rsp, %rbp\n" " call my_direct_func2\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp2, .-my_tramp2\n" " .popsection\n" ); diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c index 11b99325f3db..3927cb880d1a 100644 --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -31,7 +31,7 @@ asm ( " popq %rsi\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp, .-my_tramp\n" " .popsection\n" ); diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c index 642c50b5f716..1e901bb8d729 100644 --- a/samples/ftrace/ftrace-direct.c +++ b/samples/ftrace/ftrace-direct.c @@ -24,7 +24,7 @@ asm ( " call my_direct_func\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp, .-my_tramp\n" " .popsection\n" ); |