On Tue, 6 Oct 2026, at 22:42, Kees Cook wrote: > Hi! > > The x86 EFI stub builds from its own short list of compiler flags instead > of KBUILD_CFLAGS, so options added kernel-wide reach it only when someone > remembers to add them there too (e.g. for -fms-extensions). Swap it > around to remove unwanted options instead, as we do for all the other > architectures. > > This will let Clang's -fexperimental-late-parse-attributes reach the > stub build so that __counted_by() will get parsed without error[1]. > > Thanks! > > -Kees > > Link: https://lore.kernel.org/all/202610060642.7C4125F@keescook [1] > > Kees Cook (3): > efi/libstub: Declare the x86 stub's assembly entry points > efi/libstub: Build the x86 stub from KBUILD_CFLAGS > efi/libstub: Disable kernel stack erasing in the common flags >
Thanks. I've queued this up but with a tweak applied to patch #1, as it broke the GCC i386 build due to the fact that 'asmlinkage' evaluates to __attribute__((regparm(0))), and apparently, GCC still thinks that differs from a function without the attribute, even when it is the default. (Clang built fine)
