linux-kernel - Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.

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Date: Fri, 5 Apr 2024 15:35:55 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Eric Hagberg <ehagberg@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>, Russ Anderson <rja@....com>,
	Steve Wahl <steve.wahl@....com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Andy Lutomirski <luto@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org,
	Linux regressions mailing list <regressions@...ts.linux.dev>,
	Pavin Joseph <me@...injoseph.com>, stable@...r.kernel.org,
	Simon Horman <horms@...ge.net.au>,
	Eric Biederman <ebiederm@...ssion.com>,
	Dave Young <dyoung@...hat.com>, Sarah Brofeldt <srhb@....dk>,
	Dimitri Sivanich <sivanich@....com>
Subject: Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps
 except on UV platform.

On Fri, Apr 05, 2024 at 09:13:36AM -0400, Eric Hagberg wrote:
> On Mon, Mar 25, 2024 at 6:58 AM Ingo Molnar <mingo@...nel.org> wrote:
> > Anyway, I've reverted this in tip:x86/urgent:
> >
> >   c567f2948f57 Revert "x86/mm/ident_map: Use gbpages only where full GB page should be mapped."
> 
> I see that this hasn't been reverted in the longterm branches it made
> it into already (6.1.x and 6.6.x, for example) - is it expected to be
> reverted there as well? I'd think it should be, until this is all
> sorted out.
> 

The revert is queued up for the next round of stable updates.

thanks,

greg k-h