[PATCH 31/46] x86/purgatory, lto: Disable gcc LTO for purgatory

Jiri Slaby (SUSE)
2022-11-14T11:47:40Z

From: Andi Kleen <ak@linux.intel.com>

There are various issues with gcc LTO in the purgatory code, so disable
LTO here for now.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Martin Liska <mliska@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
arch/x86/purgatory/Makefile | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index 17f09dc26381..c00dc09d6fe4 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -60,6 +60,8 @@ ifdef CONFIG_CFI_CLANG
PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_CFI)
endif

+PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_LTO)
+
CFLAGS_REMOVE_purgatory.o += $(PURGATORY_CFLAGS_REMOVE)
CFLAGS_purgatory.o += $(PURGATORY_CFLAGS)

--
2.38.1