torvalds/linux
torvalds/linux
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Code
b6e4bc125f
linux/drivers/firmware/efi/libstub
History
Ard Biesheuvel 464fb126d9 efi/libstub/file: Merge file name buffers to reduce stack usage 
Arnd reports that commit

  9302c1bb8e ("efi/libstub: Rewrite file I/O routine")

reworks the file I/O routines in a way that triggers the following
warning:

  drivers/firmware/efi/libstub/file.c:240:1: warning: the frame size
            of 1200 bytes is larger than 1024 bytes [-Wframe-larger-than=]

We can work around this issue dropping an instance of efi_char16_t[256]
from the stack frame, and reusing the 'filename' field of the file info
struct that we use to obtain file information from EFI (which contains
the file name even though we already know it since we used it to open
the file in the first place)

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200409130434.6736-8-ardb@kernel.org
2020-04-14 08:32:15 +02:00
..
arm32-stub.c efi/libstub/arm: Make efi_entry() an ordinary PE/COFF entrypoint 2020-02-22 23:37:37 +01:00
arm64-stub.c arm64 fixes: 2020-04-09 11:04:16 -07:00
arm-stub.c efi/libstub/arm: Fix spurious message that an initrd was loaded 2020-03-29 12:08:18 +02:00
efi-stub-helper.c efi/libstub/x86: Make loaded_image protocol handling mixed mode safe 2020-02-23 21:59:42 +01:00
efistub.h efi/x86: Move efi stub globals from .bss to .data 2020-04-14 08:32:13 +02:00
fdt.c efi/libstub: Simplify efi_high_alloc() and rename to efi_allocate_pages() 2020-02-23 21:57:15 +01:00
file.c efi/libstub/file: Merge file name buffers to reduce stack usage 2020-04-14 08:32:15 +02:00
gop.c efi/libstub: Rename efi_call_early/_runtime macros to be more intuitive 2019-12-25 10:49:25 +01:00
hidden.h efi/libstub: Use hidden visibility for all source files 2020-02-23 21:57:12 +01:00
Makefile Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-31 10:28:35 -07:00
mem.c efi/libstub: Describe efi_relocate_kernel() 2020-02-23 21:57:15 +01:00
pci.c efi: Allow disabling PCI busmastering on bridges during boot 2020-01-10 18:55:04 +01:00
random.c efi/libstub: Describe RNG functions 2020-02-23 21:57:19 +01:00
randomalloc.c efi/libstub: Move efi_random_alloc() into separate source file 2020-02-23 21:57:15 +01:00
secureboot.c efi/libstub: Rename efi_call_early/_runtime macros to be more intuitive 2019-12-25 10:49:25 +01:00
skip_spaces.c efi/libstub: Clean up command line parsing routine 2020-02-23 21:57:15 +01:00
string.c efi/libstub: Clean up command line parsing routine 2020-02-23 21:57:15 +01:00
tpm.c efi/libstub: Rename efi_call_early/_runtime macros to be more intuitive 2019-12-25 10:49:25 +01:00
x86-stub.c efi/x86: Always relocate the kernel for EFI handover entry 2020-04-14 08:32:13 +02:00