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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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4
hypervisor/include/common/ptdev.h
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@@ -120,6 +120,9 @@ struct ptirq_msi_info {
int32_t is_msix; /* 0-MSI, 1-MSIX */
};
struct ptirq_remapping_info;
typedef void (*ptirq_arch_release_fn_t)(const struct ptirq_remapping_info *entry);
/* entry per each allocated irq/vector
* it represents a pass-thru device's remapping data entry which collecting
* information related with its vm and msi/intx mapping & interaction nodes
@@ -139,6 +142,7 @@ struct ptirq_remapping_info {
uint64_t intr_count;
struct hv_timer intr_delay_timer; /* used for delay intr injection */
ptirq_arch_release_fn_t release_cb;
};
extern struct ptirq_remapping_info ptirq_entries[CONFIG_MAX_PT_IRQ_ENTRIES];