Arnd reports that commit 9302c1bb8e47 ("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
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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