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livepatch: Add CONFIG_KLP_BUILD

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In preparation for introducing klp-build, add a new CONFIG_KLP_BUILD
option.  The initial version will only be supported on x86-64.

Acked-by: Petr Mladek <pmladek@suse.com>
Tested-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Josh Poimboeuf 2025-09-17 09:04:04 -07:00
parent 164c9201e1
commit 7ae60ff0b7
2 changed files with 13 additions and 0 deletions
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1
arch/x86/Kconfig
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@ -261,6 +261,7 @@ config X86
select HAVE_FUNCTION_ERROR_INJECTION
select HAVE_KRETPROBES
select HAVE_RETHOOK
select HAVE_KLP_BUILD if X86_64
select HAVE_LIVEPATCH if X86_64
select HAVE_MIXED_BREAKPOINTS_REGS
select HAVE_MOD_ARCH_SPECIFIC

12
kernel/livepatch/Kconfig
View file

@ -18,3 +18,15 @@ config LIVEPATCH
module uses the interface provided by this option to register
a patch, causing calls to patched functions to be redirected
to new function code contained in the patch module.
config HAVE_KLP_BUILD
bool
help
Arch supports klp-build
config KLP_BUILD
def_bool y
depends on LIVEPATCH && HAVE_KLP_BUILD
select OBJTOOL
help
Enable klp-build support