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

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Subject: Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
From: Eric Hagberg <ehagberg@xxxxxxxxx>
Date: Fri, 5 Apr 2024 09:13:36 -0400
Cc: Russ Anderson <rja@xxxxxxx>, Steve Wahl <steve.wahl@xxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Linux regressions mailing list <regressions@xxxxxxxxxxxxxxx>, Pavin Joseph <me@xxxxxxxxxxxxxxx>, stable@xxxxxxxxxxxxxxx, Simon Horman <horms@xxxxxxxxxxxx>, Eric Biederman <ebiederm@xxxxxxxxxxxx>, Dave Young <dyoung@xxxxxxxxxx>, Sarah Brofeldt <srhb@xxxxxx>, Dimitri Sivanich <sivanich@xxxxxxx>
In-reply-to: <ZgFY24QT7470ZGnV@gmail.com>

On Mon, Mar 25, 2024 at 6:58 AM Ingo Molnar <mingo@xxxxxxxxxx> 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.

Follow-Ups:
- Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
  - From: Greg KH

References:
- [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
  - From: Steve Wahl
- Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
  - From: Ingo Molnar
- Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
  - From: Russ Anderson
- Re: [PATCH] x86/mm/ident_map: Use full gbpages in identity maps except on UV platform.
  - From: Ingo Molnar

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