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47b9aae0ae
This patch resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=1035188
Commit f094aaac48 changed the PCI device assignment in qemu domains
to default to using VFIO rather than legacy KVM device assignment
(when VFIO is available). It didn't change which driver was used by
default for virNodeDeviceDetachFlags(), though, so that API (and the
virsh nodedev-detach command) was still binding to the pci-stub
driver, used by legacy KVM assignment, by default.
This patch publicizes (only within the qemu module, though, so no
additions to the symbol exports are needed) the functions that check
for presence of KVM and VFIO device assignment, then uses those
functions to decide what to do when no driver is specified for
virNodeDeviceDetachFlags(); if the vfio driver is loaded, the device
will be bound to vfio-pci, or if legacy KVM assignment is supported on
this system, the device will be bound to pci-stub; if neither method
is available, the detach will fail.
77 lines
3.5 KiB
C
77 lines
3.5 KiB
C
/*
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* qemu_hostdev.h: QEMU hostdev management
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*
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* Copyright (C) 2006-2007, 2009-2013 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __QEMU_HOSTDEV_H__
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# define __QEMU_HOSTDEV_H__
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# include "qemu_conf.h"
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# include "domain_conf.h"
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int qemuUpdateActivePciHostdevs(virQEMUDriverPtr driver,
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virDomainDefPtr def);
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int qemuUpdateActiveUsbHostdevs(virQEMUDriverPtr driver,
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virDomainDefPtr def);
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int qemuUpdateActiveScsiHostdevs(virQEMUDriverPtr driver,
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virDomainDefPtr def);
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bool qemuHostdevHostSupportsPassthroughLegacy(void);
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bool qemuHostdevHostSupportsPassthroughVFIO(void);
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int qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver,
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const char *name,
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const unsigned char *uuid,
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virDomainHostdevDefPtr *hostdevs,
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int nhostdevs,
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virQEMUCapsPtr qemuCaps);
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int qemuFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev,
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bool mandatory,
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virUSBDevicePtr *usb);
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int qemuPrepareHostdevUSBDevices(virQEMUDriverPtr driver,
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const char *name,
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virUSBDeviceListPtr list);
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int qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver,
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const char *name,
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virDomainHostdevDefPtr *hostdevs,
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int nhostdevs);
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int qemuPrepareHostDevices(virQEMUDriverPtr driver,
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virDomainDefPtr def,
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virQEMUCapsPtr qemuCaps,
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bool coldBoot);
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void qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver,
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const char *name,
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virDomainHostdevDefPtr *hostdevs,
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int nhostdevs);
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void qemuReattachPciDevice(virPCIDevicePtr dev, virQEMUDriverPtr driver);
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void qemuDomainReAttachHostdevDevices(virQEMUDriverPtr driver,
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const char *name,
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virDomainHostdevDefPtr *hostdevs,
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int nhostdevs);
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void qemuDomainReAttachHostDevices(virQEMUDriverPtr driver,
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virDomainDefPtr def);
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int qemuDomainHostdevIsVirtualFunction(virDomainHostdevDefPtr hostdev);
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int qemuDomainHostdevNetConfigReplace(virDomainHostdevDefPtr hostdev,
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const unsigned char *uuid,
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char *stateDir);
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int qemuDomainHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
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char *stateDir);
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#endif /* __QEMU_HOSTDEV_H__ */
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