Re: [GIT PULL] x86/urgent for v5.13-rc5

From: Borislav Petkov
Date: Tue Jun 08 2021 - 14:35:37 EST


On Tue, Jun 08, 2021 at 05:53:15PM +0000, Michael Kelley wrote:
> I checked with the Windows team. Peter Anvin's statement from 11
> years ago is true. On Intel and AMD processors, Windows unconditionally
> reserves the 1st megabyte of memory, minus one page used for real
> mode startup. This is done to work around BIOS bugs.

Thanks for checking!

I guess us doing the same is probably fine.

Linus, maybe we should at least give it a try and see whether someone
complains and revert, potentially...?

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette