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[RFC PATCH 3/4] memory: add interface for triggering IOMMU notify_flag_c
From: |
Viktor Prutyanov |
Subject: |
[RFC PATCH 3/4] memory: add interface for triggering IOMMU notify_flag_changed handler |
Date: |
Mon, 24 Apr 2023 14:21:46 +0300 |
This interface helps if IOMMU notify_flag_changed should be triggered
after changing IOMMU notifier flags in the runtime.
Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
---
include/exec/memory.h | 2 ++
softmmu/memory.c | 12 ++++++++++++
2 files changed, 14 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 2e602a2fad..c8d5f69add 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1772,6 +1772,8 @@ void memory_region_iommu_replay(IOMMUMemoryRegion
*iommu_mr, IOMMUNotifier *n);
void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n);
+void memory_region_iommu_notify_flags_changed(MemoryRegion *mr);
+
/**
* memory_region_iommu_get_attr: return an IOMMU attr if get_attr() is
* defined on the IOMMU.
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 9d64efca26..e4a53cde6c 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -1950,6 +1950,18 @@ void memory_region_iommu_replay(IOMMUMemoryRegion
*iommu_mr, IOMMUNotifier *n)
}
}
+void memory_region_iommu_notify_flags_changed(MemoryRegion *mr)
+{
+ IOMMUMemoryRegion *iommu_mr;
+
+ if (mr->alias) {
+ memory_region_iommu_notify_flags_changed(mr->alias);
+ return;
+ }
+ iommu_mr = IOMMU_MEMORY_REGION(mr);
+ memory_region_update_iommu_notify_flags(iommu_mr, NULL);
+}
+
void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
IOMMUNotifier *n)
{
--
2.21.0