Messages in this thread Patch in this message | | | Date | Tue, 08 Mar 2022 16:30:15 +0100 | From | Peter Zijlstra <> | Subject | [PATCH v4 04/45] objtool,efi: Update __efi64_thunk annotation |
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The current annotation relies on not running objtool on the file; this won't work when running objtool on vmlinux.o. Instead explicitly mark __efi64_thunk() to be ignored.
This preserves the status quo, which is somewhat unfortunate. Luckily this code is hardly ever used.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- arch/x86/platform/efi/Makefile | 1 - arch/x86/platform/efi/efi_thunk_64.S | 6 ++++-- 2 files changed, 4 insertions(+), 3 deletions(-)
--- a/arch/x86/platform/efi/Makefile +++ b/arch/x86/platform/efi/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -OBJECT_FILES_NON_STANDARD_efi_thunk_$(BITS).o := y KASAN_SANITIZE := n GCOV_PROFILE := n --- a/arch/x86/platform/efi/efi_thunk_64.S +++ b/arch/x86/platform/efi/efi_thunk_64.S @@ -20,12 +20,14 @@ */ #include <linux/linkage.h> +#include <linux/objtool.h> #include <asm/page_types.h> #include <asm/segment.h> .text .code64 -SYM_CODE_START(__efi64_thunk) +SYM_FUNC_START(__efi64_thunk) +STACK_FRAME_NON_STANDARD __efi64_thunk push %rbp push %rbx @@ -79,7 +81,7 @@ SYM_CODE_START(__efi64_thunk) 2: pushl $__KERNEL_CS pushl %ebp lret -SYM_CODE_END(__efi64_thunk) +SYM_FUNC_END(__efi64_thunk) .bss .balign 8
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