linux-kernel - Re: [PATCH v4 3/4] arm64: Use __tlbi() macros in KVM code

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Message-ID: <87lgtprgi4.fsf@e105922-lin.cambridge.arm.com>
Date:   Wed, 01 Feb 2017 17:02:43 +0000
From:   Punit Agrawal <punit.agrawal@....com>
To:     Will Deacon <will.deacon@....com>
Cc:     Christoffer Dall <christoffer.dall@...aro.org>,
        Mark Langsdorf <mlangsdo@...hat.com>,
        Jon Masters <jcm@...hat.com>, kvm@...r.kernel.org,
        Marc Zyngier <marc.zyngier@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        timur@...eaurora.org, linux-kernel@...r.kernel.org,
        Neil Leeder <nleeder@...eaurora.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        kvmarm@...ts.cs.columbia.edu, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 3/4] arm64: Use __tlbi() macros in KVM code

Will Deacon <will.deacon@....com> writes:

> On Wed, Jan 25, 2017 at 08:39:43PM +0100, Christoffer Dall wrote:
>> On Wed, Jan 25, 2017 at 10:52:31AM -0500, Christopher Covington wrote:
>> > Refactor the KVM code to use the __tlbi macros, which will allow an errata
>> > workaround that repeats tlbi dsb sequences to only change one location.
>> > This is not intended to change the generated assembly and comparing before
>> > and after vmlinux objdump shows no functional changes.
>> > 
>> > Signed-off-by: Christopher Covington <cov@...eaurora.org>
>> 
>> Acked-by: Christoffer Dall <christoffer.dall@...aro.org>
>
> Thanks, I'll queue this one via arm64.

I just noticed this patch but there's been a similar patch from Mark
that I've been carrying as part of the KVM TLB monitoring series[0].

[0] http://www.mail-archive.com/kvmarm@lists.cs.columbia.edu/msg09359.html

>
> Will
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> kvmarm@...ts.cs.columbia.edu
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