linux-kernel - Re: [PATCH 1/3] x86/setup: always reserve the first 1M of RAM

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]

Message-ID: <YN4bcMK3pX7X4AiX@kernel.org>
Date:   Thu, 1 Jul 2021 22:45:52 +0300
From:   Mike Rapoport <rppt@...nel.org>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...capital.net>,
        Andy Shevchenko <andy@...radead.org>,
        Ard Biesheuvel <ardb@...nel.org>, Baoquan He <bhe@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Darren Hart <dvhart@...radead.org>,
        Dave Young <dyoung@...hat.com>,
        Hugh Dickins <hughd@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Lianbo Jiang <lijiang@...hat.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-doc@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH 1/3] x86/setup: always reserve the first 1M of RAM

On Thu, Jul 01, 2021 at 10:15:29AM -0700, Dave Hansen wrote:
> On 6/1/21 12:53 AM, Mike Rapoport wrote:
> > There are BIOSes that are known to corrupt the memory under 1M, or more
> > precisely under 640K because the memory above 640K is anyway reserved for
> > the EGA/VGA frame buffer and BIOS.
> 
> Should there have been a Cc: stable@ on this?
> 
> Seems like the kind of thing we'd want backported.

The commit this patch is fixing (a799c2bd29d1) went to v5.13-rc1, so there
is no need to backport it.

-- 
Sincerely yours,
Mike.