linux-kernel - Re: [RFC PATCH v1 0/2] KVM: arm64: Making BT Field in ID_AA64PFR1

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Date: Mon, 17 Jun 2024 20:29:26 +0800
From: Shaoqin Huang <shahuang@...hat.com>
To: Marc Zyngier <maz@...nel.org>
Cc: Oliver Upton <oliver.upton@...ux.dev>, kvmarm@...ts.linux.dev,
 Eric Auger <eauger@...hat.com>, Sebastian Ott <sebott@...hat.com>,
 Cornelia Huck <cohuck@...hat.com>, Catalin Marinas
 <catalin.marinas@....com>, James Morse <james.morse@....com>,
 kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>,
 Suzuki K Poulose <suzuki.poulose@....com>, Will Deacon <will@...nel.org>,
 Zenghui Yu <yuzenghui@...wei.com>
Subject: Re: [RFC PATCH v1 0/2] KVM: arm64: Making BT Field in ID_AA64PFR1_EL1
 writable

Hi Marc,

On 6/13/24 16:42, Marc Zyngier wrote:
> On Thu, 13 Jun 2024 09:31:45 +0100,
> Shaoqin Huang <shahuang@...hat.com> wrote:
>>
>> If we don't care about the FEAT_CNTSC right now. Could I fix the
>> compile issue and respin this again without the background of enabling
>> migration between MtCollins and AmpereOne, and just keep the
>> information of the different BT field between different machine?
> 
> As I said, I think this patch is valuable. But maybe you should
> consider tackling the full register, rather than only addressing a
> single field.

Yes, it would be better to tackling the full register. I will put more 
time on other fields in the register and try to making more field to be 
writable. But currently I just respin the series with deleting the 
machine specific information and fixing the compilation issue.

Thanks,
Shaoqin

> 
> Thanks,
> 
> 	M.
> 

-- 
Shaoqin