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[Qemu-devel] [PATCH v7 14/17] memory: add MemoryRegionIOMMUOps.replay()
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v7 14/17] memory: add MemoryRegionIOMMUOps.replay() callback |
Date: |
Tue, 7 Feb 2017 16:28:16 +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.
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 0767888..30b2a74 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 7a4f2f9..9c253cc 100644
--- a/memory.c
+++ b/memory.c
@@ -1630,6 +1630,12 @@ 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
- [Qemu-devel] [PATCH v7 09/17] intel_iommu: vtd_slpt_level_shift check level, (continued)
- [Qemu-devel] [PATCH v7 09/17] intel_iommu: vtd_slpt_level_shift check level, Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 10/17] memory: add section range info for IOMMU notifier, Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 11/17] memory: provide IOMMU_NOTIFIER_FOREACH macro, Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 12/17] memory: provide iommu_replay_all(), Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 13/17] memory: introduce memory_region_notify_one(), Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 14/17] memory: add MemoryRegionIOMMUOps.replay() callback,
Peter Xu <=
- [Qemu-devel] [PATCH v7 15/17] intel_iommu: provide its own replay() callback, Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 16/17] intel_iommu: allow dynamic switch of IOMMU region, Peter Xu, 2017/02/07
- [Qemu-devel] [PATCH v7 17/17] intel_iommu: enable vfio devices, Peter Xu, 2017/02/07
- Re: [Qemu-devel] [PATCH v7 00/17] VT-d: vfio enablement and misc enhances, Alex Williamson, 2017/02/17