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([2001:b07:6468:f312:1c09:f536:3de6:228c]) by smtp.googlemail.com with ESMTPSA id 1-20020a170906210100b007317f017e64sm595545ejt.134.2022.11.03.08.17.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Nov 2022 08:17:45 -0700 (PDT) Message-ID: <23bfd709-f99a-5a74-e4b9-1381b88453f1@redhat.com> Date: Thu, 3 Nov 2022 16:17:43 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.0 Subject: Re: [PATCH 36/44] KVM: x86: Do compatibility checks when onlining CPU Content-Language: en-US To: Sean Christopherson , Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Matthew Rosato , Eric Farman , Vitaly Kuznetsov Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Atish Patra , David Hildenbrand , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Isaku Yamahata , Fabiano Rosas , Michael Ellerman , Chao Gao , Thomas Gleixner , Yuan Yao References: <20221102231911.3107438-1-seanjc@google.com> <20221102231911.3107438-37-seanjc@google.com> From: Paolo Bonzini In-Reply-To: <20221102231911.3107438-37-seanjc@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On 11/3/22 00:19, Sean Christopherson wrote: > From: Chao Gao > > Do compatibility checks when enabling hardware to effectively add > compatibility checks when onlining a CPU. Abort enabling, i.e. the > online process, if the (hotplugged) CPU is incompatible with the known > good setup. This paragraph is not true with this patch being before "KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section". Paolo