linux-kernel - Re: [RESEND PATCH v3 0/3] x86/mm: LAM fixups and cleanups

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Message-ID: <CAJD7tka+=v2rSjWgs8zcNg2rQwgxg8V1m-nA-mxXdox=WoARXg@mail.gmail.com>
Date: Tue, 2 Jul 2024 11:55:02 -0700
From: Yosry Ahmed <yosryahmed@...gle.com>
To: Dave Hansen <dave.hansen@...el.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>, 
	Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, 
	Rick Edgecombe <rick.p.edgecombe@...el.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v3 0/3] x86/mm: LAM fixups and cleanups

On Tue, Jul 2, 2024 at 11:38 AM Dave Hansen <dave.hansen@...el.com> wrote:
>
> On 7/2/24 11:35, Andrew Morton wrote:
> > But when people run older (or current) kernels on newer hardware, they
> > will hit this.  So a backport to cover 82721d8b25d7 ("x86/mm: Handle
> > LAM on context switch") is needed.
> >
> > The series doesn't seem to be getting much traction so I can add it to
> > mm.git's mm-unstable branch for wider testing, but it's clearly an x86
> > tree thing.
>
> I was really hoping Andy L would look at this since he suggested this
> whole thing really.
>
> I completely agree that this needs some wider testing.  How about I pull
> it into x86/mm so it gets some linux-next testing instead of having it
> in mm-unstable?  Maybe it'll also attract Andy's attention once it's in
> there.

That would be great. Thanks Dave!