[Xen-changelog] [xen staging] x86/dom0: propagate PVH vlapic EOIs to hardware

[patchbot@xxxxxxx]

commit 7b653a245ffc26aca691f34204d4fef7af49a0a0
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Tue Mar 5 17:41:14 2019 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Mar 5 17:41:14 2019 +0100

    x86/dom0: propagate PVH vlapic EOIs to hardware
    
    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.pau@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Release-acked-by: Juergen Gross <jgross@xxxxxxxx>
---
 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);
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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