diff options
| author | Jing Liu <jing2.liu@intel.com> | 2023-09-25 22:14:07 -0400 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2023-10-05 22:04:51 +0200 |
| commit | eaadba6f9b14823e52ee154d0052d69907deee8a (patch) | |
| tree | b2e9c5afc9ea8166f35b4bbaab17ab129e4df40a /qga/commands-win32.c | |
| parent | 5ebffa4e87e7a3127650ef2c0fc12e8624337ee4 (diff) | |
vfio/pci: enable MSI-X in interrupt restoring on dynamic allocation
During migration restoring, vfio_enable_vectors() is called to restore
enabling MSI-X interrupts for assigned devices. It sets the range from
0 to nr_vectors to kernel to enable MSI-X and the vectors unmasked in
guest. During the MSI-X enabling, all the vectors within the range are
allocated according to the VFIO_DEVICE_SET_IRQS ioctl.
When dynamic MSI-X allocation is supported, we only want the guest
unmasked vectors being allocated and enabled. Use vector 0 with an
invalid fd to get MSI-X enabled, after that, all the vectors can be
allocated in need.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'qga/commands-win32.c')
0 files changed, 0 insertions, 0 deletions