[PATCH 45/97] ioapic: kvm: Skip route updates for masked pins

[Michael Roth]

From: Jan Kiszka <address@hidden>

Masked entries will not generate interrupt messages, thus do no need to
be routed by KVM. This is a cosmetic cleanup, just avoiding warnings of
the kind

qemu-system-x86_64: vtd_irte_get: detected non-present IRTE (index=0, 
high=0xff00, low=0x100)

if the masked entry happens to reference a non-present IRTE.

Cc: address@hidden
Signed-off-by: Jan Kiszka <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Peter Xu <address@hidden>
(cherry picked from commit be1927c97e564346cbd409cb17fe611df74b84e5)
Signed-off-by: Michael Roth <address@hidden>
---
 hw/intc/ioapic.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index 9d75f84d3b..194ccb6a3e 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -188,9 +188,11 @@ static void ioapic_update_kvm_routes(IOAPICCommonState *s)
             MSIMessage msg;
             struct ioapic_entry_info info;
             ioapic_entry_parse(s->ioredtbl[i], &info);
-            msg.address = info.addr;
-            msg.data = info.data;
-            kvm_irqchip_update_msi_route(kvm_state, i, msg, NULL);
+            if (!info.masked) {
+                msg.address = info.addr;
+                msg.data = info.data;
+                kvm_irqchip_update_msi_route(kvm_state, i, msg, NULL);
+            }
         }
         kvm_irqchip_commit_routes(kvm_state);
     }
-- 
2.17.1