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Mon, 17 Jun 2024 22:55:28 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGmf7CqoB5qG+f+SoSDNog9sHPlb0eZ/k8nda7B9rivFb2/iFdvUu6nxAvxJ5wxsEEdjtvYqg== X-Received: by 2002:a05:6358:8a6:b0:19f:4cd0:aad1 with SMTP id e5c5f4694b2df-19fb4eb049cmr1247882755d.2.1718690127611; Mon, 17 Jun 2024 22:55:27 -0700 (PDT) Received: from [10.66.61.39] ([43.228.180.230]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-6fedf592f0csm7512541a12.54.2024.06.17.22.55.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Jun 2024 22:55:27 -0700 (PDT) Message-ID: <8fd7e58d-1d87-430d-a974-47ee05bc72de@redhat.com> Date: Tue, 18 Jun 2024 13:55:22 +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: [PATCH v1 0/2] KVM: arm64: Making BT Field in ID_AA64PFR1_EL1 writable To: Oliver Upton Cc: Marc Zyngier , kvmarm@lists.linux.dev, 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: <20240617075131.1006173-1-shahuang@redhat.com> Content-Language: en-US From: Shaoqin Huang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Oliver, On 6/18/24 01:40, Oliver Upton wrote: > On Mon, Jun 17, 2024 at 03:51:29AM -0400, Shaoqin Huang wrote: >> In this patch series, we try to make more register fields writable like >> ID_AA64PFR1_EL1.BT since this can benifit the migration between some of the >> machines which have different BT values. >> >> Changelog: >> ---------- >> RFCv1 -> v1: >> * Fix the compilation error. >> * Delete the machine specific information and make the description more >> generable. > > Can you please address Marc's feedback? > > If we only make things writable a field at a time it's going to take > forever to catch up w/ the architecture. > > https://lore.kernel.org/kvmarm/86zfrpjkt6.wl-maz@kernel.org/ Ok. I will update the patch series again with tackling the full register. Thanks, Shaoqin > -- Shaoqin