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[PATCH V2 3/5] memory: introduce memory_region_unmap_iommu_notifier_rang
From: |
Jason Wang |
Subject: |
[PATCH V2 3/5] memory: introduce memory_region_unmap_iommu_notifier_range() |
Date: |
Thu, 23 Feb 2023 14:59:22 +0800 |
This patch introduces a new helper to unmap the range of a specific
IOMMU notifier.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
include/exec/memory.h | 10 ++++++++++
softmmu/memory.c | 13 +++++++++++++
2 files changed, 23 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 2e602a2fad..6fa0b071f0 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1731,6 +1731,16 @@ void memory_region_notify_iommu(IOMMUMemoryRegion
*iommu_mr,
void memory_region_notify_iommu_one(IOMMUNotifier *notifier,
IOMMUTLBEvent *event);
+/**
+ * memory_region_unmap_iommu_notifier_range: notify a unmap for an IOMMU
+ * translation that covers the
+ * range of a notifier
+ *
+ * @notifier: the notifier to be notified
+ */
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n);
+
+
/**
* memory_region_register_iommu_notifier: register a notifier for changes to
* IOMMU translation entries.
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 9d64efca26..ba43b4474e 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -1996,6 +1996,19 @@ void memory_region_notify_iommu_one(IOMMUNotifier
*notifier,
}
}
+void memory_region_unmap_iommu_notifier_range(IOMMUNotifier *n)
+{
+ IOMMUTLBEvent event;
+
+ event.type = IOMMU_NOTIFIER_UNMAP;
+ event.entry.target_as = &address_space_memory;
+ event.entry.iova = n->start;
+ event.entry.perm = IOMMU_NONE;
+ event.entry.addr_mask = n->end - n->start;
+
+ memory_region_notify_iommu_one(n, &event);
+}
+
void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
int iommu_idx,
IOMMUTLBEvent event)
--
2.25.1
- [PATCH V2 0/5] Fix UNMAP notifier for intel-iommu, Jason Wang, 2023/02/23
- [PATCH V2 1/5] intel-iommu: fail MAP notifier without caching mode, Jason Wang, 2023/02/23
- [PATCH V2 2/5] intel-iommu: fail DEVIOTLB_UNMAP without dt mode, Jason Wang, 2023/02/23
- [PATCH V2 3/5] memory: introduce memory_region_unmap_iommu_notifier_range(),
Jason Wang <=
- [PATCH V2 4/5] smmu: switch to use memory_region_unmap_iommu_notifier_range(), Jason Wang, 2023/02/23
- [PATCH V2 5/5] intel-iommu: send UNMAP notifications for domain or global inv desc, Jason Wang, 2023/02/23
- Re: [PATCH V2 0/5] Fix UNMAP notifier for intel-iommu, Peter Xu, 2023/02/23