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hv: vpci: refine vpci deinit

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The existing code do separately for each VM when we deinit vpci of a VM. This is
not necessary. This patch use the common handling for all VMs: we first deassign
it from the (current) user, then give it back to its parent user.

When we deassign the vdev from the (current) user, we would de-initialize the
vMSI/VMSI-X remapping, so does the vMSI/vMSI-X data structure.

Tracked-On: #4550
Signed-off-by: Li Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong<eddie.dong@Intel.com>
This commit is contained in:
Li Fei1
2020-05-12 15:06:02 +08:00
committed by wenlingz
parent 15e3062631
commit f9d26a80ed
5 changed files with 54 additions and 137 deletions
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3
hypervisor/dm/vpci/vmsi.c
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@@ -127,10 +127,11 @@ void write_vmsi_cfg(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint
* @pre vdev->vpci != NULL
* @pre vdev->vpci->vm != NULL
*/
void deinit_vmsi(const struct pci_vdev *vdev)
void deinit_vmsi(struct pci_vdev *vdev)
{
if (has_msi_cap(vdev)) {
ptirq_remove_msix_remapping(vpci2vm(vdev->vpci), vdev->bdf.value, 1U);
(void)memset((void *)&vdev->msi, 0U, sizeof(struct pci_msi));
}
}