[Qemu-devel] [RFC PATCH 12/13] intel_iommu: do replay when context invalidate

[Peter Xu <peterx@redhat.com>]

Before this one we only invalidate context cache when we receive context
entry invalidations. However it's possible that the invalidation also
contains a domain switch (only if cache-mode is enabled for vIOMMU). In
that case we need to notify all the registered components about the new
mapping.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/i386/intel_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 2fcd7af..0220e63 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -1188,6 +1188,7 @@ static void vtd_context_device_invalidate(IntelIOMMUState *s,
                 trace_vtd_inv_desc_cc_device(bus_n, (devfn_it >> 3) & 0x1f,
                                              devfn_it & 3);
                 vtd_as->context_cache_entry.context_cache_gen = 0;
+                memory_region_iommu_replay_all(&vtd_as->iommu);
             }
         }
     }
-- 
2.7.4