We don't set the affinity for posted format IRTE, since the
destination of these interrupts is vCPU and the vCPU affinity
is set during vCPU scheduling.
Signed-off-by: Feng Wu <feng...@intel.com>
---
v4:
- Keep the construction of new_ire and only modify the hardware
IRTE when it is not in posted mode.
xen/drivers/passthrough/vtd/intremap.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/xen/drivers/passthrough/vtd/intremap.c
b/xen/drivers/passthrough/vtd/intremap.c
index bfd468b..4537714 100644
--- a/xen/drivers/passthrough/vtd/intremap.c
+++ b/xen/drivers/passthrough/vtd/intremap.c
@@ -637,9 +637,12 @@ static int msi_msg_to_remap_entry(
remap_rte->address_hi = 0;
remap_rte->data = index - i;
- memcpy(iremap_entry, &new_ire, sizeof(struct iremap_entry));
- iommu_flush_cache_entry(iremap_entry, sizeof(struct iremap_entry));
- iommu_flush_iec_index(iommu, 0, index);
+ if ( !iremap_entry->remap.p || !iremap_entry->remap.im )
+ {
+ memcpy(iremap_entry, &new_ire, sizeof(struct iremap_entry));
+ iommu_flush_cache_entry(iremap_entry, sizeof(struct iremap_entry));
+ iommu_flush_iec_index(iommu, 0, index);
+ }
unmap_vtd_domain_page(iremap_entries);
spin_unlock_irqrestore(&ir_ctrl->iremap_lock, flags);
--
2.1.0
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