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[Qemu-devel] [PATCH v8 5/9] memory: add MemoryRegionIOMMUOps.replay() ca
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v8 5/9] memory: add MemoryRegionIOMMUOps.replay() callback |
Date: |
Thu, 6 Apr 2017 15:08:40 +0800 |
Originally we have one memory_region_iommu_replay() function, which is
the default behavior to replay the translations of the whole IOMMU
region. However, on some platform like x86, we may want our own replay
logic for IOMMU regions. This patch add one more hook for IOMMUOps for
the callback, and it'll override the default if set.
Reviewed-by: David Gibson <address@hidden>
Signed-off-by: Peter Xu <address@hidden>
---
include/exec/memory.h | 2 ++
memory.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 055b3a8..c0280b7 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -191,6 +191,8 @@ struct MemoryRegionIOMMUOps {
void (*notify_flag_changed)(MemoryRegion *iommu,
IOMMUNotifierFlag old_flags,
IOMMUNotifierFlag new_flags);
+ /* Set this up to provide customized IOMMU replay function */
+ void (*replay)(MemoryRegion *iommu, IOMMUNotifier *notifier);
};
typedef struct CoalescedMemoryRange CoalescedMemoryRange;
diff --git a/memory.c b/memory.c
index ded4bf1..b782d5b 100644
--- a/memory.c
+++ b/memory.c
@@ -1626,6 +1626,12 @@ void memory_region_iommu_replay(MemoryRegion *mr,
IOMMUNotifier *n,
hwaddr addr, granularity;
IOMMUTLBEntry iotlb;
+ /* If the IOMMU has its own replay callback, override */
+ if (mr->iommu_ops->replay) {
+ mr->iommu_ops->replay(mr, n);
+ return;
+ }
+
granularity = memory_region_iommu_get_min_page_size(mr);
for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
--
2.7.4
- Re: [Qemu-devel] [PATCH v8 2/9] memory: provide IOMMU_NOTIFIER_FOREACH macro, (continued)
- [Qemu-devel] [PATCH v8 4/9] memory: introduce memory_region_notify_one(), Peter Xu, 2017/04/06
- [Qemu-devel] [PATCH v8 5/9] memory: add MemoryRegionIOMMUOps.replay() callback,
Peter Xu <=
- [Qemu-devel] [PATCH v8 6/9] intel_iommu: use the correct memory region for device IOTLB notification, Peter Xu, 2017/04/06
- [Qemu-devel] [PATCH v8 7/9] intel_iommu: provide its own replay() callback, Peter Xu, 2017/04/06
- [Qemu-devel] [PATCH v8 8/9] intel_iommu: allow dynamic switch of IOMMU region, Peter Xu, 2017/04/06
- [Qemu-devel] [PATCH v8 9/9] intel_iommu: enable remote IOTLB, Peter Xu, 2017/04/06