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authorJosh Poimboeuf <jpoimboe@kernel.org>2025-09-17 09:04:04 -0700
committerJosh Poimboeuf <jpoimboe@kernel.org>2025-10-14 14:50:18 -0700
commit7ae60ff0b77f2e741049087a6d1beaf679b91a2c (patch)
tree8c7c2292bf50c602edc5f2e9b52cf4b500d6543b
parent164c9201e1dad8d5c0c38f583dba81e4b6da9cc7 (diff)
livepatch: Add CONFIG_KLP_BUILD
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>
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--kernel/livepatch/Kconfig12
2 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fa3b616af03a..ac9692093215 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -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
diff --git a/kernel/livepatch/Kconfig b/kernel/livepatch/Kconfig
index 53d51ed619a3..4c0a9c18d0b2 100644
--- a/kernel/livepatch/Kconfig
+++ b/kernel/livepatch/Kconfig
@@ -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