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Mon, 17 Jun 2024 05:29:33 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFOU5fYRtot9iBJXy2SS9IX2XSkrNEwI68apkvLYUeP2Vlv30jHjv3k+GFqCmYhxr4fz+B5Wg== X-Received: by 2002:a05:6a20:5aa9:b0:1b0:1be7:3708 with SMTP id adf61e73a8af0-1bae7e3d928mr8545338637.1.1718627372892; Mon, 17 Jun 2024 05:29:32 -0700 (PDT) Received: from [10.72.112.55] ([43.228.180.230]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-705cc967356sm7261218b3a.63.2024.06.17.05.29.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Jun 2024 05:29:32 -0700 (PDT) Message-ID: <9db95188-71c2-491a-a4c7-434e7cd3c407@redhat.com> Date: Mon, 17 Jun 2024 20:29:26 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v1 0/2] KVM: arm64: Making BT Field in ID_AA64PFR1_EL1 writable To: Marc Zyngier Cc: Oliver Upton , kvmarm@lists.linux.dev, Eric Auger , Sebastian Ott , Cornelia Huck , Catalin Marinas , James Morse , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Suzuki K Poulose , Will Deacon , Zenghui Yu References: <20240612023553.127813-1-shahuang@redhat.com> <8634pilbja.wl-maz@kernel.org> <7f1ca739-42f5-4e3a-a0c9-b1eac4522a97@redhat.com> <86zfrpjkt6.wl-maz@kernel.org> Content-Language: en-US From: Shaoqin Huang In-Reply-To: <86zfrpjkt6.wl-maz@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Marc, On 6/13/24 16:42, Marc Zyngier wrote: > On Thu, 13 Jun 2024 09:31:45 +0100, > Shaoqin Huang 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