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| author | Peter Xu <peterx@redhat.com> | 2017-05-19 11:19:40 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-05-25 21:25:27 +0300 |
| commit | bf55b7afce53718ef96f4e6616da62c0ccac37dd (patch) | |
| tree | ac502b7d8fa21ab67434cd05c9a1390c6c2ddea6 /memory.c | |
| parent | 9964e96dc9999cf7f7c936ee854a795415d19b60 (diff) | |
| download | focaccia-qemu-bf55b7afce53718ef96f4e6616da62c0ccac37dd.tar.gz focaccia-qemu-bf55b7afce53718ef96f4e6616da62c0ccac37dd.zip | |
memory: tune last param of iommu_ops.translate()
This patch converts the old "is_write" bool into IOMMUAccessFlags. The difference is that "is_write" can only express either read/write, but sometimes what we really want is "none" here (neither read nor write). Replay is an good example - during replay, we should not check any RW permission bits since thats not an actual IO at all. CC: Paolo Bonzini <pbonzini@redhat.com> CC: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'memory.c')
| -rw-r--r-- | memory.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/memory.c b/memory.c index b727f5ec0e..3f0aae8e17 100644 --- a/memory.c +++ b/memory.c @@ -1625,6 +1625,7 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, { hwaddr addr, granularity; IOMMUTLBEntry iotlb; + IOMMUAccessFlags flag = is_write ? IOMMU_WO : IOMMU_RO; /* If the IOMMU has its own replay callback, override */ if (mr->iommu_ops->replay) { @@ -1635,7 +1636,7 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, granularity = memory_region_iommu_get_min_page_size(mr); for (addr = 0; addr < memory_region_size(mr); addr += granularity) { - iotlb = mr->iommu_ops->translate(mr, addr, is_write); + iotlb = mr->iommu_ops->translate(mr, addr, flag); if (iotlb.perm != IOMMU_NONE) { n->notify(n, &iotlb); } |