Set HAVE_STACK_VALIDATION to enable stack metadata validation for
x86_64.
Also, disable objtool checking for the kexec purgatory code, because:
1. It's built by the archprepare target, which can run before objtool
has been built yet.
2. It runs outside the scope of the kernel's normal mode of operation
and doesn't need stack checking anyway.
Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com>
---
arch/x86/Kconfig | 1 +
arch/x86/purgatory/Makefile | 2 ++
2 files changed, 3 insertions(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c46662f..adc5a6d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -155,6 +155,7 @@ config X86
select VIRT_TO_BUS
select X86_DEV_DMA_OPS if X86_64
select X86_FEATURE_NAMES if PROC_FS
+ select HAVE_STACK_VALIDATION if X86_64
config INSTRUCTION_DECODER
def_bool y
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index 2c835e3..92e3e1d 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -1,3 +1,5 @@
+OBJECT_FILES_NON_STANDARD := y
+
purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o
string.o
targets += $(purgatory-y)
--
2.4.3
