diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2023-09-12 09:00:52 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-09-15 11:18:40 +0200 |
| commit | 5f51c5d0e905608ba7be126737f7c84a793ae1aa (patch) | |
| tree | 108cdc547152baca434c20ef3ca8db92a92c9fd6 | |
| parent | 9fdfb15a3dbf818e06be514f4abbfc071004cbe7 (diff) | |
x86/efi: Drop EFI stub .bss from .data section
Now that the EFI stub always zero inits its BSS section upon entry,
there is no longer a need to place the BSS symbols carried by the stub
into the .data section.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230912090051.4014114-18-ardb@google.com
| -rw-r--r-- | arch/x86/boot/compressed/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile | 7 |
2 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S index b22f34b8684a..4ff6ab1b67d9 100644 --- a/arch/x86/boot/compressed/vmlinux.lds.S +++ b/arch/x86/boot/compressed/vmlinux.lds.S @@ -47,7 +47,6 @@ SECTIONS _data = . ; *(.data) *(.data.*) - *(.bss.efistub) _edata = . ; } . = ALIGN(L1_CACHE_BYTES); diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index a1157c2a7170..ef4c12f0877b 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -108,13 +108,6 @@ lib-y := $(patsubst %.o,%.stub.o,$(lib-y)) # https://bugs.llvm.org/show_bug.cgi?id=46480 STUBCOPY_FLAGS-y += --remove-section=.note.gnu.property -# -# For x86, bootloaders like systemd-boot or grub-efi do not zero-initialize the -# .bss section, so the .bss section of the EFI stub needs to be included in the -# .data section of the compressed kernel to ensure initialization. Rename the -# .bss section here so it's easy to pick out in the linker script. -# -STUBCOPY_FLAGS-$(CONFIG_X86) += --rename-section .bss=.bss.efistub,load,alloc STUBCOPY_RELOC-$(CONFIG_X86_32) := R_386_32 STUBCOPY_RELOC-$(CONFIG_X86_64) := R_X86_64_64 |