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Thu, 21 Nov 2019 08:30:32 +0000 (UTC) Received: from redhat.com (ovpn-116-218.ams2.redhat.com [10.36.116.218]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 045415DAB0; Thu, 21 Nov 2019 08:30:31 +0000 (UTC) From: Juan Quintela To: Laurent Vivier Subject: Re: [PATCH] pseries: disable migration-test if /dev/kvm cannot be used In-Reply-To: (Laurent Vivier's message of "Thu, 21 Nov 2019 09:08:22 +0100") References: <20191120170955.242900-1-lvivier@redhat.com> <87zhgpn1dt.fsf@trasno.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) Date: Thu, 21 Nov 2019 09:30:27 +0100 Message-ID: <87v9rdmy1o.fsf@trasno.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: flwLKeskP-mmNJqLo7IUqA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 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: 205.139.110.61 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: , Reply-To: quintela@redhat.com Cc: Thomas Huth , qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Cole Robinson , Paolo Bonzini , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Laurent Vivier wrote: > On 21/11/2019 08:18, Juan Quintela wrote: >> Laurent Vivier wrote: >>> On ppc64, migration-test only works with kvm_hv, and we already >>> have a check to verify the module is loaded. >>> >>> kvm_hv module can be loaded in memory and /sys/module/kvm_hv exists, >>> but on some systems (like build systems) /dev/kvm can be missing >>> (by administrators choice). >>> >>> And as kvm_hv exists test-migration is started but QEMU falls back to >>> TCG because it cannot be used: >>> >>> Could not access KVM kernel module: No such file or directory >>> failed to initialize KVM: No such file or directory >>> Back to tcg accelerator >>> >>> And as the test is done with TCG, it fails. >>> >>> As for s390x, we must check for the existence and the access rights >>> of /dev/kvm. >>> >>> Reported-by: Cole Robinson >>> Signed-off-by: Laurent Vivier >>=20 >> Reviewed-by: Juan Quintela >>=20 >> Oh, why it is so difficult!!! >>=20 >> Thanks, Juan. >>=20 > > David, > > could you add this one too to your ppc-for-4.2 queue? I was about to ask if you preffered it to go through the migration tree. David? Later, Juan.