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Tsirkin" , Marcel Apfelbaum , Richard Henderson , Eduardo Habkost , Jason Wang , Marcelo Tosatti , qemu-block@nongnu.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org Subject: [PULL 11/15] hw/xen: only remove peers of PCI NICs on unplug Date: Tue, 7 Nov 2023 09:21:43 +0000 Message-ID: <20231107092149.404842-12-dwmw2@infradead.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231107092149.404842-1-dwmw2@infradead.org> References: <20231107092149.404842-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: David Woodhouse X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-ZohoMail-DKIM: pass (identity @infradead.org) X-ZM-MESSAGEID: 1699348973241100001 Content-Type: text/plain; charset="utf-8" From: David Woodhouse When the Xen guest asks to unplug *emulated* NICs, it's kind of unhelpful also to unplug the peer of the *Xen* PV NIC. Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- hw/i386/xen/xen_platform.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index 17457ff3de..e2dd1b536a 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -140,9 +140,14 @@ static void unplug_nic(PCIBus *b, PCIDevice *d, void *= o) /* Remove the peer of the NIC device. Normally, this would be a tap device= . */ static void del_nic_peer(NICState *nic, void *opaque) { - NetClientState *nc; + NetClientState *nc =3D qemu_get_queue(nic); + ObjectClass *klass =3D module_object_class_by_name(nc->model); + + /* Only delete peers of PCI NICs that we're about to delete */ + if (!klass || !object_class_dynamic_cast(klass, TYPE_PCI_DEVICE)) { + return; + } =20 - nc =3D qemu_get_queue(nic); if (nc->peer) qemu_del_net_client(nc->peer); } --=20 2.41.0