vfio/pci: Clear VFIO_IRQ_INFO_NORESIZE for MSI-X
Dynamic MSI-X is supported. Clear VFIO_IRQ_INFO_NORESIZE to provide guidance to user space. Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/fd1ef2bf6ae972da8e2805bc95d5155af5a8fb0a.1683740667.git.reinette.chatre@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
parent
e4163438e0
commit
6c8017c6a5
|
@ -1114,7 +1114,7 @@ static int vfio_pci_ioctl_get_irq_info(struct vfio_pci_core_device *vdev,
|
||||||
if (info.index == VFIO_PCI_INTX_IRQ_INDEX)
|
if (info.index == VFIO_PCI_INTX_IRQ_INDEX)
|
||||||
info.flags |=
|
info.flags |=
|
||||||
(VFIO_IRQ_INFO_MASKABLE | VFIO_IRQ_INFO_AUTOMASKED);
|
(VFIO_IRQ_INFO_MASKABLE | VFIO_IRQ_INFO_AUTOMASKED);
|
||||||
else
|
else if (info.index != VFIO_PCI_MSIX_IRQ_INDEX || !vdev->has_dyn_msix)
|
||||||
info.flags |= VFIO_IRQ_INFO_NORESIZE;
|
info.flags |= VFIO_IRQ_INFO_NORESIZE;
|
||||||
|
|
||||||
return copy_to_user(arg, &info, minsz) ? -EFAULT : 0;
|
return copy_to_user(arg, &info, minsz) ? -EFAULT : 0;
|
||||||
|
|
|
@ -511,6 +511,9 @@ struct vfio_region_info_cap_nvlink2_lnkspd {
|
||||||
* then add and unmask vectors, it's up to userspace to make the decision
|
* then add and unmask vectors, it's up to userspace to make the decision
|
||||||
* whether to allocate the maximum supported number of vectors or tear
|
* whether to allocate the maximum supported number of vectors or tear
|
||||||
* down setup and incrementally increase the vectors as each is enabled.
|
* down setup and incrementally increase the vectors as each is enabled.
|
||||||
|
* Absence of the NORESIZE flag indicates that vectors can be enabled
|
||||||
|
* and disabled dynamically without impacting other vectors within the
|
||||||
|
* index.
|
||||||
*/
|
*/
|
||||||
struct vfio_irq_info {
|
struct vfio_irq_info {
|
||||||
__u32 argsz;
|
__u32 argsz;
|
||||||
|
|
Loading…
Reference in New Issue