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[Qemu-devel] [PATCH v3 03/12] memory: remove the last param in memory_re
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v3 03/12] memory: remove the last param in memory_region_iommu_replay() |
Date: |
Wed, 10 May 2017 16:01:46 +0800 |
We were always passing in that one as "false" to assume that's an read
operation, and we also assume that IOMMU translation would always have
that read permission. A better permission would be IOMMU_NONE since the
replay is after all not a real read operation, but just a page table
rebuilding process.
CC: David Gibson <address@hidden>
CC: Paolo Bonzini <address@hidden>
Reviewed-by: David Gibson <address@hidden>
Acked-by: Paolo Bonzini <address@hidden>
Signed-off-by: Peter Xu <address@hidden>
---
hw/vfio/common.c | 2 +-
include/exec/memory.h | 5 +----
memory.c | 8 +++-----
3 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index a8f12ee..b9abe77 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -502,7 +502,7 @@ static void vfio_listener_region_add(MemoryListener
*listener,
QLIST_INSERT_HEAD(&container->giommu_list, giommu, giommu_next);
memory_region_register_iommu_notifier(giommu->iommu, &giommu->n);
- memory_region_iommu_replay(giommu->iommu, &giommu->n, false);
+ memory_region_iommu_replay(giommu->iommu, &giommu->n);
return;
}
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 97fd0c2..bfdc685 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -731,11 +731,8 @@ void memory_region_register_iommu_notifier(MemoryRegion
*mr,
*
* @mr: the memory region to observe
* @n: the notifier to which to replay iommu mappings
- * @is_write: Whether to treat the replay as a translate "write"
- * through the iommu
*/
-void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
- bool is_write);
+void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n);
/**
* memory_region_iommu_replay_all: replay existing IOMMU translations
diff --git a/memory.c b/memory.c
index 3f0aae8..0ddc4cc 100644
--- a/memory.c
+++ b/memory.c
@@ -1620,12 +1620,10 @@ uint64_t
memory_region_iommu_get_min_page_size(MemoryRegion *mr)
return TARGET_PAGE_SIZE;
}
-void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n,
- bool is_write)
+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) {
@@ -1636,7 +1634,7 @@ 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, flag);
+ iotlb = mr->iommu_ops->translate(mr, addr, IOMMU_NONE);
if (iotlb.perm != IOMMU_NONE) {
n->notify(n, &iotlb);
}
@@ -1654,7 +1652,7 @@ void memory_region_iommu_replay_all(MemoryRegion *mr)
IOMMUNotifier *notifier;
IOMMU_NOTIFIER_FOREACH(notifier, mr) {
- memory_region_iommu_replay(mr, notifier, false);
+ memory_region_iommu_replay(mr, notifier);
}
}
--
2.7.4
[Qemu-devel] [PATCH v3 05/12] x86-iommu: use DeviceClass properties, Peter Xu, 2017/05/10
[Qemu-devel] [PATCH v3 07/12] intel_iommu: provide vtd_ce_get_type(), Peter Xu, 2017/05/10
[Qemu-devel] [PATCH v3 06/12] intel_iommu: renaming context entry helpers, Peter Xu, 2017/05/10
[Qemu-devel] [PATCH v3 08/12] intel_iommu: use IOMMU_ACCESS_FLAG(), Peter Xu, 2017/05/10
[Qemu-devel] [PATCH v3 09/12] intel_iommu: allow dev-iotlb context entry conditionally, Peter Xu, 2017/05/10