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Tsirkin" Subject: Re: [PATCH] pci: Refuse to hotplug PCI Devices when the Guest OS is not ready Message-ID: <20201023143016.3f80e51e@yekko.fritz.box> In-Reply-To: <20201022091500-mutt-send-email-mst@kernel.org> References: <20201022114026.31968-1-marcel.apfelbaum@gmail.com> <20201022080354-mutt-send-email-mst@kernel.org> <20201022235632.7f69ddc9@yekko.fritz.box> <20201022091500-mutt-send-email-mst@kernel.org> X-Mailer: Claws Mail 3.17.7 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgibson@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; boundary="Sig_/WdabjhRry4rFQ5lMT3M.sK9"; protocol="application/pgp-signature"; micalg=pgp-sha256 Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgibson@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 23:30:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: jusual@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --Sig_/WdabjhRry4rFQ5lMT3M.sK9 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 22 Oct 2020 09:15:28 -0400 "Michael S. Tsirkin" wrote: > On Thu, Oct 22, 2020 at 11:56:32PM +1100, David Gibson wrote: > [...] =20 > [...] =20 > [...] =20 > > >=20 > > > Probably the only way to handle for existing machine types. > > > For new ones, can't we queue it in host memory somewhere? =20 > >=20 > > I'm not actually convinced we can't do that even for existing machine > > types. =20 >=20 > The difficulty would be in migrating the extra "reuested but defferred" > state. Ah, true. Although we could block migration for the duration instead. --=20 David Gibson Principal Software Engineer, Virtualization, Red Hat --Sig_/WdabjhRry4rFQ5lMT3M.sK9 Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEdfRlhq5hpmzETofcbDjKyiDZs5IFAl+STkgACgkQbDjKyiDZ s5Id3RAAgJEQBl3PdTcGfa/PottP9Gu9FnoJYztbk3r/jcEerO31gLGi3NSWjO41 fFE9vPpZoqc4wkegWDq+QwLuF2S4n+fuuKiDRuImctROCDt1yG9wWWtjbCl0khsw DnJ+XcCvZEt2oTV5gyHR8EuaL31mvpz19rTToopiiveRRuettIfq+2idBt6eGg5g rrwAyoqbUxiHaw4tzsMsgAFe2EgoLOjzW/HgbmriOgMIohucrHXsnX/U/ea+BDV2 FCNKsU9e95bmnFG/fByyvZqaqngTztWfsN+Sn3eNx4sqou99G+4oefoSii4IQJDi btiBCNmnzrk+48mCpuO6vKo6IOiUuw/qpKZwKOdlhG6FqzR0yzI05+6VPNwVL6Wk GLG0nc5RjKcPkHe39HwVUbJ9co/7gM15QmZb0a57uBOF0aZbcJj7WJhH8aeNTT7b n3ChegqoxegY26LEaEthWVrdaxpw2rTXmI96yVTPyswbR+icqK+HAv2IzLjbnsXX Od/N4D4vQZD2APH8N29aDdHsgI/mpC/mPJKmMkZaJZmwz4ZpSzNIITA8wk8cD1IJ LwNA/BhU//I/tN1YMxV2HBfdKnYSs9a9V/qUkcaQ53tA8+W+2i3QN6phki4nJmPt jMByU81TxZfPc4vv2DCKsgkvbHh3ovpxf6CYRo6Q13IeahD4kEc= =7ZWE -----END PGP SIGNATURE----- --Sig_/WdabjhRry4rFQ5lMT3M.sK9--