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[Qemu-devel] [RFC v4 05/27] memory: add IOMMU_ATTR_VFIO_NESTED IOMMU mem
From: |
Eric Auger |
Subject: |
[Qemu-devel] [RFC v4 05/27] memory: add IOMMU_ATTR_VFIO_NESTED IOMMU memory region attribute |
Date: |
Mon, 27 May 2019 13:41:41 +0200 |
We introduce a new IOMMU Memory Region attribute, IOMMU_ATTR_VFIO_NESTED
which tells whether the virtual IOMMU requires physical nested
stages for VFIO integration. Intel virtual IOMMU supports Caching
Mode and does not require 2 stages at physical level. However virtual
ARM SMMU does not implement such caching mode and requires to use
physical stage 1 for VFIO integration.
Signed-off-by: Eric Auger <address@hidden>
---
include/exec/memory.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 9144a47f57..352a00169f 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -204,7 +204,8 @@ struct MemoryRegionOps {
};
enum IOMMUMemoryRegionAttr {
- IOMMU_ATTR_SPAPR_TCE_FD
+ IOMMU_ATTR_SPAPR_TCE_FD,
+ IOMMU_ATTR_VFIO_NESTED,
};
/**
--
2.20.1
- [Qemu-devel] [RFC v4 00/27] vSMMUv3/pSMMUv3 2 stage VFIO integration, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 01/27] vfio/common: Introduce vfio_set_irq_signaling helper, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 02/27] update-linux-headers: Import iommu.h, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 03/27] update-linux-headers: Add sve_context.h to asm-arm64, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 04/27] header update against 5.2.0-rc1 and IOMMU/VFIO nested stage APIs, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 05/27] memory: add IOMMU_ATTR_VFIO_NESTED IOMMU memory region attribute,
Eric Auger <=
- [Qemu-devel] [RFC v4 06/27] memory: add IOMMU_ATTR_MSI_TRANSLATE IOMMU memory region attribute, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 07/27] hw/arm/smmuv3: Advertise VFIO_NESTED and MSI_TRANSLATE attributes, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 08/27] hw/vfio/common: Force nested if iommu requires it, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 09/27] memory: Prepare for different kinds of IOMMU MR notifiers, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 10/27] memory: Add IOMMUConfigNotifier, Eric Auger, 2019/05/27
- [Qemu-devel] [RFC v4 11/27] memory: Add arch_id and leaf fields in IOTLBEntry, Eric Auger, 2019/05/27