linux-kernel - Re: [PATCH AUTOSEL 5.15 11/12] x86/barrier: Do not serialize MSR accesses on AMD

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Message-ID: <Z0nfomc6TKd-17S9@sashalap>
Date: Fri, 29 Nov 2024 10:37:06 -0500
From: Sasha Levin <sashal@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Erwan Velu <erwanaliasr1@...il.com>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
	dave.hansen@...ux.intel.com, x86@...nel.org, puwen@...on.cn,
	seanjc@...gle.com, kim.phillips@....com, jmattson@...gle.com,
	babu.moger@....com, peterz@...radead.org,
	rick.p.edgecombe@...el.com, brgerst@...il.com, ashok.raj@...el.com,
	mjguzik@...il.com, jpoimboe@...nel.org, nik.borisov@...e.com,
	aik@....com, vegard.nossum@...cle.com,
	daniel.sneddon@...ux.intel.com, acdunlap@...gle.com, pavel@...x.de
Subject: Re: [PATCH AUTOSEL 5.15 11/12] x86/barrier: Do not serialize MSR
 accesses on AMD

On Fri, Nov 29, 2024 at 02:33:10PM +0100, Borislav Petkov wrote:
>On Fri, Nov 29, 2024 at 10:30:11AM +0100, Erwan Velu wrote:
>> We all know how difficult it is to maintain kernels and support the hard
>> work you do on this.  It's also up to us, the users & industry, to give
>> feedback and testing around this type of story.  It could probably be
>> interesting to have a presentation around this at KernelRecipes ;)

Or LPC? I don't usually end up attending KR but Greg is always there :)

>Yes, absolutely.
>
>And you should reserve a whole slot of 1h after it for discussion. Because all
>the folks using stable kernels or doing backports will definitely have
>experience and thoughts to share... who knows, might improve the proces in the
>end.

If there are enough folks who are interested in a BoF session I'm happy
to help set it up for LPC.

-- 
Thanks,
Sasha