[PATCH 11/11] xen/arm: Process pending vPCI map/unmap operations

[Oleksandr Andrushchenko <andr2000@xxxxxxxxx>]

From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>

vPCI may map and unmap PCI device memory (BARs) being passed through which
may take a lot of time. For this those operations may be deferred to be
performed later, so that they can be safely preempted.
Run the corresponding vPCI code while switching a vCPU.

Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
---
 xen/arch/arm/traps.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 219ab3c3fbde..1571fb8afd03 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -34,6 +34,7 @@
 #include <xen/symbols.h>
 #include <xen/version.h>
 #include <xen/virtual_region.h>
+#include <xen/vpci.h>
 
 #include <public/sched.h>
 #include <public/xen.h>
@@ -2304,6 +2305,11 @@ static bool check_for_vcpu_work(void)
     }
 #endif
 
+    local_irq_enable();
+    if ( has_vpci(v->domain) && vpci_process_pending(v) )
+        raise_softirq(SCHEDULE_SOFTIRQ);
+    local_irq_disable();
+
     if ( likely(!v->arch.need_flush_to_ram) )
         return false;
 
-- 
2.25.1