Current check for MSI EIO is missing a special case for PVH Dom0,
which doesn't have a hvm_irq_dpci struct but requires EIOs to be
forwarded to the physical lapic for passed-through devices.
Add a short-circuit to allow EOIs from PVH Dom0 to be propagated.
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
---
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Juergen Gross <jgr...@suse.com>
---
xen/drivers/passthrough/io.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/xen/drivers/passthrough/io.c b/xen/drivers/passthrough/io.c
index a6eb8a4336..4290c7c710 100644
--- a/xen/drivers/passthrough/io.c
+++ b/xen/drivers/passthrough/io.c
@@ -869,7 +869,8 @@ static int _hvm_dpci_msi_eoi(struct domain *d,
void hvm_dpci_msi_eoi(struct domain *d, int vector)
{
- if ( !iommu_enabled || !hvm_domain_irq(d)->dpci )
+ if ( !iommu_enabled ||
+ (!hvm_domain_irq(d)->dpci && !is_hardware_domain(d)) )
return;
spin_lock(&d->event_lock);
--
2.17.2 (Apple Git-113)
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