Avoid incorrectly triggering an error when a broadcast buffered ioreq
is not handled by all registered clients, as long as the failure is
strictly because the client doesn't handle buffered ioreqs.

Signed-off-by: Per Bilse <[email protected]>
---
v2: Complete rethink with better information. A lot of simplicity was added.
---
 xen/common/ioreq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/common/ioreq.c b/xen/common/ioreq.c
index 4617aef29b..568e7aea91 100644
--- a/xen/common/ioreq.c
+++ b/xen/common/ioreq.c
@@ -1317,7 +1317,8 @@ unsigned int ioreq_broadcast(ioreq_t *p, bool buffered)
 
     FOR_EACH_IOREQ_SERVER(d, id, s)
     {
-        if ( !s->enabled )
+        if ( !s->enabled || (buffered &&
+                    s->bufioreq_handling == HVM_IOREQSRV_BUFIOREQ_OFF) )
             continue;
 
         if ( ioreq_send(s, p, buffered) == IOREQ_STATUS_UNHANDLED )
-- 
2.31.1


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