From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9DDD41BC23; Thu, 15 Feb 2024 09:27:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707989224; cv=none; b=GDOssvBuJv1o/wK9uPQd1+9p4lkXN8trI2IENklOm5Utm7Ka0s6QvhrmEhsRZqG36pl0euORagDCyJyx529g9kMFT6m5Xlbb+n2RSXZpj9ueSF4altq9WVr/3CS8XhQT6Sq+SWc/U7CPUyDaf6WPakT0GNl1Ljngfli7Hg02jI4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707989224; c=relaxed/simple; bh=A5fbHGxtRbgjKuDkkQPsxhP/R9vJ3gqS4ITdwibQog8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fPHUSZKAExYP4ym29CMOMY5LYgOUY6bzKteakoxmOHrqe8OwrntgJVbKKCT8UQi+v51bW1pmtzuHhe85gIZpkTPilMoJs4zzRoK/9aTebqQcZVn9lO+LTUg5m4rIbTuFQKnIUs9dzjxtkuQ2gJR3SsDvcKlcdgxSYGFi4BN4tIs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Qca106dL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Qca106dL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A7359C433C7; Thu, 15 Feb 2024 09:27:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1707989224; bh=A5fbHGxtRbgjKuDkkQPsxhP/R9vJ3gqS4ITdwibQog8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Qca106dLwOGDQJ1dpHdy0qAHOAX3i9KDetAvWb88/8QEFYznaFsNHMIf4p/BWJVHe 90JTWmsWmIKoAwlO8s1wMoKKlR//SGT3PPJwtXEk4sbqrEdBPMhv9BL/gqXwzgL3c5 LNypendNTG6qm0XVCEHd164i/uoF8TLjoPJRvxUA= Date: Thu, 15 Feb 2024 10:27:01 +0100 From: Greg KH To: Ard Biesheuvel Cc: "# 3.4.x" , linux-efi , jan.setjeeilers@oracle.com, Peter Jones , Steve McIntyre , Julian Andres Klode , Luca Boccassi , James Bottomley Subject: Re: x86 efistub stable backports for v6.6 Message-ID: <2024021552-bats-tabby-a00b@gregkh> References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Is the list here the order in which they should be applied in? And is this not an issue for 6.1.y as well? thanks, greg k-h