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| author |   Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-12-31 00:14:15 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-01-06 09:46:51 +0900 |
| commit | e9666d10a5677a494260d60d1fa0b73cc7646eb3 (patch) | |
| tree | fd609e683efff32ed6cc1458e20c40969328a33e /arch/x86/entry/calling.h | |
| parent | kallsyms: lower alignment on ARM (diff) | |
| download | wireguard-linux-e9666d10a5677a494260d60d1fa0b73cc7646eb3.tar.xz wireguard-linux-e9666d10a5677a494260d60d1fa0b73cc7646eb3.zip | |
jump_label: move 'asm goto' support test to Kconfig
Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label".
The jump label is controlled by HAVE_JUMP_LABEL, which is defined
like this:
#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
# define HAVE_JUMP_LABEL
#endif
We can improve this by testing 'asm goto' support in Kconfig, then
make JUMP_LABEL depend on CC_HAS_ASM_GOTO.
Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will
match to the real kernel capability.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Diffstat (limited to 'arch/x86/entry/calling.h')
| -rw-r--r-- | arch/x86/entry/calling.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h index 20d0885b00fb..efb0d1b1f15f 100644 --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -351,7 +351,7 @@ For 32-bit we have the following conventions - kernel is built with */ .macro CALL_enter_from_user_mode #ifdef CONFIG_CONTEXT_TRACKING -#ifdef HAVE_JUMP_LABEL +#ifdef CONFIG_JUMP_LABEL STATIC_JUMP_IF_FALSE .Lafter_call_\@, context_tracking_enabled, def=0 #endif call enter_from_user_mode |