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hv: release IOMMU irte when releasing ptirq remapping entries

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IRTE is freed if ptirq entry is released from remove_msix_remapping() or
remove_intx_remapping(). But if it's called from ptdev_release_all_entries(),
e.g. SOS shutdown/reboot, IRTE is not freed.

This patch adds a release_cb() callback function to do any architectural
specific cleanup. In x86, it's used to release IRTE.

On VM shutdown, vpci_cleanup() needs to remove MSI/MSI-X remapping on
ptirq entries, thus it should be called before ptdev_release_all_entries().

Tracked-On: #2700
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zide Chen
2019-04-22 09:28:35 -07:00
committed by wenlingz
parent dd86a78e75
commit 5f87e716b8
4 changed files with 30 additions and 2 deletions
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3
hypervisor/common/ptdev.c
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@@ -198,6 +198,9 @@ void ptdev_release_all_entries(const struct acrn_vm *vm)
entry = &ptirq_entries[idx];
if ((entry->vm == vm) && is_entry_active(entry)) {
spinlock_obtain(&ptdev_lock);
if (entry->release_cb != NULL) {
entry->release_cb(entry);
}
ptirq_deactivate_entry(entry);
ptirq_release_entry(entry);
spinlock_release(&ptdev_lock);