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VFIO fixes 2017-07-10

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- Don't iterate over non-realized devices (Alex Williamson)
  - Add PCIe capability version fixup (Alex Williamson)
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Merge remote-tracking branch 'remotes/awilliam/tags/vfio-updates-20170710.0' into staging

VFIO fixes 2017-07-10

 - Don't iterate over non-realized devices (Alex Williamson)
 - Add PCIe capability version fixup (Alex Williamson)

# gpg: Signature made Mon 10 Jul 2017 20:06:11 BST
# gpg:                using RSA key 0x239B9B6E3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg:                 aka "Alex Williamson <alex@shazbot.org>"
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>"
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>"
# Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B  8A90 239B 9B6E 3BB0 8B22

* remotes/awilliam/tags/vfio-updates-20170710.0:
  vfio/pci: Fixup v0 PCIe capabilities
  vfio: Test realized when using VFIOGroup.device_list iterator

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-07-11 13:47:28 +01:00
commit 29741be341
4 changed files with 23 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
hw/vfio/common.c
View File

@ -858,13 +858,15 @@ void vfio_reset_handler(void *opaque)
QLIST_FOREACH(group, &vfio_group_list, next) {
QLIST_FOREACH(vbasedev, &group->device_list, next) {
vbasedev->ops->vfio_compute_needs_reset(vbasedev);
if (vbasedev->dev->realized) {
vbasedev->ops->vfio_compute_needs_reset(vbasedev);
}
}
}
QLIST_FOREACH(group, &vfio_group_list, next) {
QLIST_FOREACH(vbasedev, &group->device_list, next) {
if (vbasedev->needs_reset) {
if (vbasedev->dev->realized && vbasedev->needs_reset) {
vbasedev->ops->vfio_hot_reset_multi(vbasedev);
}
}

19
hw/vfio/pci.c
View File

@ -1743,6 +1743,18 @@ static int vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size,
PCI_EXP_LNKCAP_MLW | PCI_EXP_LNKCAP_SLS);
}
/*
* Intel 82599 SR-IOV VFs report an invalid PCIe capability version 0
* (Niantic errate #35) causing Windows to error with a Code 10 for the
* device on Q35. Fixup any such devices to report version 1. If we
* were to remove the capability entirely the guest would lose extended
* config space.
*/
if ((flags & PCI_EXP_FLAGS_VERS) == 0) {
vfio_add_emulated_word(vdev, pos + PCI_CAP_FLAGS,
1, PCI_EXP_FLAGS_VERS);
}
pos = pci_add_capability(&vdev->pdev, PCI_CAP_ID_EXP, pos, size,
errp);
if (pos < 0) {
@ -2116,7 +2128,8 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single)
/* Prep dependent devices for reset and clear our marker. */
QLIST_FOREACH(vbasedev_iter, &group->device_list, next) {
if (vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) {
if (!vbasedev_iter->dev->realized ||
vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) {
continue;
}
tmp = container_of(vbasedev_iter, VFIOPCIDevice, vbasedev);
@ -2197,7 +2210,8 @@ out:
}
QLIST_FOREACH(vbasedev_iter, &group->device_list, next) {
if (vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) {
if (!vbasedev_iter->dev->realized ||
vbasedev_iter->type != VFIO_DEVICE_TYPE_PCI) {
continue;
}
tmp = container_of(vbasedev_iter, VFIOPCIDevice, vbasedev);
@ -2647,6 +2661,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
vdev->vbasedev.name = g_strdup(basename(vdev->vbasedev.sysfsdev));
vdev->vbasedev.ops = &vfio_pci_ops;
vdev->vbasedev.type = VFIO_DEVICE_TYPE_PCI;
vdev->vbasedev.dev = &vdev->pdev.qdev;
tmp = g_strdup_printf("%s/iommu_group", vdev->vbasedev.sysfsdev);
len = readlink(tmp, group_path, sizeof(group_path));

1
hw/vfio/platform.c
View File

@ -640,6 +640,7 @@ static void vfio_platform_realize(DeviceState *dev, Error **errp)
int i, ret;
vbasedev->type = VFIO_DEVICE_TYPE_PLATFORM;
vbasedev->dev = dev;
vbasedev->ops = &vfio_platform_ops;
trace_vfio_platform_realize(vbasedev->sysfsdev ?

1
include/hw/vfio/vfio-common.h
View File

@ -115,6 +115,7 @@ typedef struct VFIODevice {
struct VFIOGroup *group;
char *sysfsdev;
char *name;
DeviceState *dev;
int fd;
int type;
bool reset_works;