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

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Date:   Thu, 1 Jul 2021 10:15:29 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Mike Rapoport <rppt@...nel.org>, x86@...nel.org
Cc:     "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 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.