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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-02-04 13:20:03 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-05-20 11:37:23 +0200 |
| commit | 66ee3636eddcc82ab82b539d08b85fb5ac1dff9b (patch) | |
| tree | abdee92c92caad2c0babd3198453e2490cb40892 /arch/x86 | |
| parent | x86/alternatives: Use the correct length when optimizing NOPs (diff) | |
| download | linux-66ee3636eddcc82ab82b539d08b85fb5ac1dff9b.tar.xz linux-66ee3636eddcc82ab82b539d08b85fb5ac1dff9b.zip | |
x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y
It took me some time to understand the purpose of the tricky code at
the end of arch/x86/Kconfig.debug.
Without it, the following would be shown:
WARNING: unmet direct dependencies detected for FRAME_POINTER
because
81d387190039 ("x86/kconfig: Consolidate unwinders into multiple choice selection")
removed 'select ARCH_WANT_FRAME_POINTERS'.
The correct and more straightforward approach should have been to move
it where 'select FRAME_POINTER' is located.
Several architectures properly handle the conditional selection of
ARCH_WANT_FRAME_POINTERS. For example, 'config UNWINDER_FRAME_POINTER'
in arch/arm/Kconfig.debug.
Fixes: 81d387190039 ("x86/kconfig: Consolidate unwinders into multiple choice selection")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/20240204122003.53795-1-masahiroy@kernel.org
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig.debug | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index c5d614d28a75..74777a97e394 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -248,6 +248,7 @@ config UNWINDER_ORC config UNWINDER_FRAME_POINTER bool "Frame pointer unwinder" + select ARCH_WANT_FRAME_POINTERS select FRAME_POINTER help This option enables the frame pointer unwinder for unwinding kernel @@ -271,7 +272,3 @@ config UNWINDER_GUESS overhead. endchoice - -config FRAME_POINTER - depends on !UNWINDER_ORC && !UNWINDER_GUESS - bool |