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[213.175.37.10]) by smtp.gmail.com with ESMTPSA id z124sm3083131wmc.20.2019.12.20.06.11.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2019 06:11:28 -0800 (PST) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [BUG] No irqchip created after commit 11bc4a13d1f4 ("kvm: convert "-machine kernel_irqchip" to an accelerator property") Date: Fri, 20 Dec 2019 15:11:27 +0100 Message-ID: <87eewz84ts.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 X-MC-Unique: Kck_GJ98MuWwA9m5W8nBWg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" I apologize if this was already reported, I just noticed that with the latest updates QEMU doesn't start with the following configuration: qemu-system-x86_64 -name guest=3Dwin10 -machine pc,accel=3Dkvm -cpu host,hv= _vpindex,hv_synic ... qemu-system-x86_64: failed to turn on HyperV SynIC in KVM: Invalid argument qemu-system-x86_64: kvm_init_vcpu failed: Invalid argument If I add 'kernel-irqchip=3Dsplit' or ',kernel-irqchip=3Don' it starts as usual. I bisected this to the following commit: commit 11bc4a13d1f4b07dafbd1dda4d4bf0fdd7ad65f2 (HEAD, refs/bisect/bad) Author: Paolo Bonzini Date: Wed Nov 13 10:56:53 2019 +0100 kvm: convert "-machine kernel_irqchip" to an accelerator property =20 so aparently we now default to 'kernel_irqchip=3Doff'. Is this the desired behavior? --=20 Vitaly