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virtio, vhost: fixes for 2.5

Browse source 
This fixes a performance regression with virtio 1,
 and makes device stop/start more robust for vhost-user.
 virtio devices on pcie bus now have pcie and pm
 capability, as required by the PCI Express spec.
 migration now works better with virtio 9p.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, vhost: fixes for 2.5

This fixes a performance regression with virtio 1,
and makes device stop/start more robust for vhost-user.
virtio devices on pcie bus now have pcie and pm
capability, as required by the PCI Express spec.
migration now works better with virtio 9p.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 12 Nov 2015 14:40:42 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  virtio-9p: add savem handlers
  hw/virtio: Add PCIe capability to virtio devices
  vhost: send SET_VRING_ENABLE at start/stop
  vhost: rename RESET_DEVICE backto RESET_OWNER
  vhost-user: modify SET_LOG_BASE to pass mmap size and offset
  virtio-pci: unbreak queue_enable read
  virtio-pci: introduce pio notification capability for modern device
  virtio-pci: use zero length mmio eventfd for 1.0 notification cap when possible
  KVM: add support for any length io eventfd
  memory: don't try to adjust endianness for zero length eventfd
  virtio-pci: fix 1.0 virtqueue migration

Conflicts:
	include/hw/compat.h
[Fixed a trivial merge conflict in compat.h]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-11-12 15:15:30 +00:00
commit 8f0da01d18
17 changed files with 446 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/hw/compat.h
View file

@ -10,7 +10,15 @@
.driver = "e1000",\
.property = "extra_mac_registers",\
.value = "off",\
},
},{\
.driver = "virtio-pci",\
.property = "x-disable-pcie",\
.value = "on",\
},{\
.driver = "virtio-pci",\
.property = "migrate-extra",\
.value = "off",\
},
#define HW_COMPAT_2_3 \
{\

3
include/hw/virtio/virtio-bus.h
View file

@ -44,9 +44,12 @@ typedef struct VirtioBusClass {
void (*notify)(DeviceState *d, uint16_t vector);
void (*save_config)(DeviceState *d, QEMUFile *f);
void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
void (*save_extra_state)(DeviceState *d, QEMUFile *f);
int (*load_config)(DeviceState *d, QEMUFile *f);
int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
int (*load_done)(DeviceState *d, QEMUFile *f);
int (*load_extra_state)(DeviceState *d, QEMUFile *f);
bool (*has_extra_state)(DeviceState *d);
bool (*query_guest_notifiers)(DeviceState *d);
int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign);
int (*set_host_notifier)(DeviceState *d, int n, bool assigned);