On Thu, Feb 15, 2024 at 10:17:20AM +0100, Ard Biesheuvel wrote: > (cc stakeholders from various distros - apologies if I missed anyone) > > Please consider the patches below for backporting to the linux-6.6.y > stable tree. > > These are prerequisites for building a signed x86 efistub kernel image > that complies with the tightened UEFI boot requirements imposed by > MicroSoft, and this is the condition under which it is willing to sign > future Linux secure boot shim builds with its 3rd party CA > certificate. (Such builds must enforce a strict separation between > executable and writable code, among other things) > > The patches apply cleanly onto 6.6.17 (-rc2), resulting in a defconfig > build that boots as expected under OVMF/KVM. > > 5f51c5d0e905 x86/efi: Drop EFI stub .bss from .data section > 7e50262229fa x86/efi: Disregard setup header of loaded image > bfab35f552ab x86/efi: Drop alignment flags from PE section headers > 768171d7ebbc x86/boot: Remove the 'bugger off' message > 8eace5b35556 x86/boot: Omit compression buffer from PE/COFF image > memory footprint > 7448e8e5d15a x86/boot: Drop redundant code setting the root device > b618d31f112b x86/boot: Drop references to startup_64 > 2e765c02dcbf x86/boot: Grab kernel_info offset from zoffset header directly > eac956345f99 x86/boot: Set EFI handover offset directly in header asm > 093ab258e3fb x86/boot: Define setup size in linker script > aeb92067f6ae x86/boot: Derive file size from _edata symbol > efa089e63b56 x86/boot: Construct PE/COFF .text section from assembler > fa5750521e0a x86/boot: Drop PE/COFF .reloc section > 34951f3c28bd x86/boot: Split off PE/COFF .data section > 3e3eabe26dc8 x86/boot: Increase section and file alignment to 4k/512 > > 1ad55cecf22f x86/efistub: Use 1:1 file:memory mapping for PE/COFF > .compat section All now queued up, thanks! greg k-h
