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authorPeter Xu <peterx@redhat.com>2017-04-07 18:59:10 +0800
committerEduardo Habkost <ehabkost@redhat.com>2017-04-20 15:22:41 -0300
commitbd2bfa4c52e5f4dc6dbaa5be0521aedc31cb53d9 (patch)
tree792518e8d0da4a632fdb2462f5f92865cd03c332 /memory.c
parentde472e4a92f780d02b894001e004f4b4a350ec38 (diff)
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memory: introduce memory_region_notify_one()
Generalizing the notify logic in memory_region_notify_iommu() into a single function. This can be further used in customized replay() functions for IOMMUs. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: \"Michael S. Tsirkin\" <mst@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <1491562755-23867-5-git-send-email-peterx@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'memory.c')
-rw-r--r--memory.c40
1 files changed, 24 insertions, 16 deletions
diff --git a/memory.c b/memory.c
index b4ed67b..ded4bf1 100644
--- a/memory.c
+++ b/memory.c
@@ -1662,32 +1662,40 @@ void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
memory_region_update_iommu_notify_flags(mr);
}
-void memory_region_notify_iommu(MemoryRegion *mr,
- IOMMUTLBEntry entry)
+void memory_region_notify_one(IOMMUNotifier *notifier,
+ IOMMUTLBEntry *entry)
{
- IOMMUNotifier *iommu_notifier;
IOMMUNotifierFlag request_flags;
- assert(memory_region_is_iommu(mr));
+ /*
+ * Skip the notification if the notification does not overlap
+ * with registered range.
+ */
+ if (notifier->start > entry->iova + entry->addr_mask + 1 ||
+ notifier->end < entry->iova) {
+ return;
+ }
- if (entry.perm & IOMMU_RW) {
+ if (entry->perm & IOMMU_RW) {
request_flags = IOMMU_NOTIFIER_MAP;
} else {
request_flags = IOMMU_NOTIFIER_UNMAP;
}
+ if (notifier->notifier_flags & request_flags) {
+ notifier->notify(notifier, entry);
+ }
+}
+
+void memory_region_notify_iommu(MemoryRegion *mr,
+ IOMMUTLBEntry entry)
+{
+ IOMMUNotifier *iommu_notifier;
+
+ assert(memory_region_is_iommu(mr));
+
IOMMU_NOTIFIER_FOREACH(iommu_notifier, mr) {
- /*
- * Skip the notification if the notification does not overlap
- * with registered range.
- */
- if (iommu_notifier->start > entry.iova + entry.addr_mask + 1 ||
- iommu_notifier->end < entry.iova) {
- continue;
- }
- if (iommu_notifier->notifier_flags & request_flags) {
- iommu_notifier->notify(iommu_notifier, &entry);
- }
+ memory_region_notify_one(iommu_notifier, &entry);
}
}