[PATCH V5 01/11] vfio/pci: Consolidate irq cleanup on MSI/MSI-X disable

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



vfio_msi_disable() releases all previously allocated state
associated with each interrupt before disabling MSI/MSI-X.

vfio_msi_disable() iterates twice over the interrupt state:
first directly with a for loop to do virqfd cleanup, followed
by another for loop within vfio_msi_set_block() that removes
the interrupt handler and its associated state using
vfio_msi_set_vector_signal().

Simplify interrupt cleanup by iterating over allocated interrupts
once.

Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
Changes since V4:
- Add Kevin's Reviewed-by tag.

Changes since V2:
- Improve accuracy of changelog.

drivers/vfio/pci/vfio_pci_intrs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index bffb0741518b..6a9c6a143cc3 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -426,10 +426,9 @@ static void vfio_msi_disable(struct vfio_pci_core_device *vdev, bool msix)
 	for (i = 0; i < vdev->num_ctx; i++) {
 		vfio_virqfd_disable(&vdev->ctx[i].unmask);
 		vfio_virqfd_disable(&vdev->ctx[i].mask);
+		vfio_msi_set_vector_signal(vdev, i, -1, msix);
 	}
 
-	vfio_msi_set_block(vdev, 0, vdev->num_ctx, NULL, msix);
-
 	cmd = vfio_pci_memory_lock_and_enable(vdev);
 	pci_free_irq_vectors(pdev);
 	vfio_pci_memory_unlock_and_restore(vdev, cmd);
-- 
2.34.1




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux