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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id z10sm8700548edd.11.2021.07.07.06.58.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Jul 2021 06:58:42 -0700 (PDT) Subject: Re: [PATCH 02/10] KVM: x86: APICv: fix race in kvm_request_apicv_update on SVM To: Maxim Levitsky , kvm@vger.kernel.org Cc: Thomas Gleixner , Sean Christopherson , Wanpeng Li , Vitaly Kuznetsov , Joerg Roedel , Borislav Petkov , "H. Peter Anvin" , Ingo Molnar , "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Jim Mattson References: <20210623113002.111448-1-mlevitsk@redhat.com> <20210623113002.111448-3-mlevitsk@redhat.com> <6c4a69ce-595e-d5a1-7b4e-e6ce1afe1252@redhat.com> <43ef1a1ea488977db11d40ec9672b524ec816112.camel@redhat.com> <9413056ebbd5997a35b446f2841589973484ba02.camel@redhat.com> From: Paolo Bonzini Message-ID: <502391b4-5a5f-6f37-dab6-06ae276a205f@redhat.com> Date: Wed, 7 Jul 2021 15:58:41 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <9413056ebbd5997a35b446f2841589973484ba02.camel@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/07/21 14:57, Maxim Levitsky wrote: > > Hi! > Any update? should I use a lock for this? Yes please, even irq_lock can do. Paolo