linux-kernel - Re: [PATCH v2 1/1] x86/boot/compressed: Fix reloading of GDTR post-relocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 27 Feb 2020 13:03:06 -0500
From:   Arvind Sankar <nivedita@...m.mit.edu>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Ingo Molnar <mingo@...nel.org>,
        linux-efi <linux-efi@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH v2 1/1] x86/boot/compressed: Fix reloading of GDTR
 post-relocation

On Thu, Feb 27, 2020 at 06:47:55PM +0100, Ard Biesheuvel wrote:
> 
> Interesting. I am going to rip most of the EFI handover protocol stuff
> out of OVMF, since it is mostly unnecessary, and having the PE/COFF
> loader put the image in the correct place right away is a nice
> complimentary improvement to that. (Note that the OVMF implementation
> of the EFI handover protocol does not currently honor the preferred
> address from the setup header anyway)

Yeah, for my testing I'm running the image from the EFI shell, which
enters via PE entry point and honors the pref address.