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([2001:b07:6468:f312:ec2c:90a9:1236:ebc6]) by smtp.gmail.com with ESMTPSA id e13sm31243921wre.60.2020.09.22.10.26.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Sep 2020 10:26:43 -0700 (PDT) Subject: Re: [PATCH] i386: Don't try to set MSR_KVM_ASYNC_PF_EN if kernel-irqchip=off To: Eduardo Habkost , Vitaly Kuznetsov References: <20200922151455.1763896-1-ehabkost@redhat.com> <87v9g5es9n.fsf@vitty.brq.redhat.com> <20200922161055.GY57321@habkost.net> <87pn6depau.fsf@vitty.brq.redhat.com> <20200922172229.GB57321@habkost.net> From: Paolo Bonzini Message-ID: Date: Tue, 22 Sep 2020 19:26:42 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200922172229.GB57321@habkost.net> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Received-SPF: pass client-ip=207.211.31.81; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 12:04:13 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.455, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , 1896263@bugs.launchpad.net, kvm@vger.kernel.org, Marcelo Tosatti , qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Stefan Hajnoczi , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 22/09/20 19:22, Eduardo Habkost wrote: > If it was possible, did KVM break live migration of > kernel-irqchip=off guests that enabled APF? This would mean my > patch is replacing a crash with a silent migration bug. Not nice > either way. Let's drop kernel-irqchip=off completely so migration is not broken. :) I'm actually serious, I don't think we need a deprecation period even. Paolo