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[Qemu-devel] [PATCH v4 0/5] ARM SMMUv3: Fix spurious notification errors
From: |
Eric Auger |
Subject: |
[Qemu-devel] [PATCH v4 0/5] ARM SMMUv3: Fix spurious notification errors and fail with VFIO |
Date: |
Thu, 22 Aug 2019 19:23:45 +0200 |
As of today when a guest is assigned with a host PCI device and
an SMMUv3, VFIO calls memory_region_iommu_replay() default
implementation. This translates the whole address range and
completely stalls the execution. As VFIO/SMMUv3 integration
is not supported yet (it requires SMMUv3 HW nested paging), let's
recognize this situation and fail.
Also the series silences some spurious translation configuration
decoding errors (STE out of span or invalid STE) that may happen
on guest IOVA invalidation notifications.
Best Regards
Eric
This series can be found at:
https://github.com/eauger/qemu/tree/v4.1.0_smmu_vfio_fail_v4
History:
v3 -> v4:
- see individual patches
v2 -> v3:
- squash IOMMU_ATTR_VFIO_NESTED introduction and SMMUv3 usage
- assert when recognizing VFIO/NESTED case
- collect R-bs
v1 -> v2:
- Added "memory: Remove unused memory_region_iommu_replay_all()" &
"hw/arm/smmuv3: Log a guest error when decoding an invalid STE"
- do not attempt to implement replay Cb but rather remove the call
in case it is not needed
- explain why we do not remove other log messages on config decoding
Eric Auger (5):
memory: Remove unused memory_region_iommu_replay_all()
memory: Add IOMMU_ATTR_HW_NESTED_PAGING IOMMU memory region attribute
hw/vfio/common: Fail on VFIO/HW nested paging detection
hw/arm/smmuv3: Log a guest error when decoding an invalid STE
hw/arm/smmuv3: Remove spurious error messages on IOVA invalidations
hw/arm/smmuv3-internal.h | 1 +
hw/arm/smmuv3.c | 30 +++++++++++++++++++++++-------
hw/vfio/common.c | 10 ++++++++++
include/exec/memory.h | 18 +++++++-----------
memory.c | 9 ---------
5 files changed, 41 insertions(+), 27 deletions(-)
--
2.20.1
- [Qemu-devel] [PATCH v4 0/5] ARM SMMUv3: Fix spurious notification errors and fail with VFIO,
Eric Auger <=
- [Qemu-devel] [PATCH v4 1/5] memory: Remove unused memory_region_iommu_replay_all(), Eric Auger, 2019/08/22
- [Qemu-devel] [PATCH v4 2/5] memory: Add IOMMU_ATTR_HW_NESTED_PAGING IOMMU memory region attribute, Eric Auger, 2019/08/22
- [Qemu-devel] [PATCH v4 3/5] hw/vfio/common: Fail on VFIO/HW nested paging detection, Eric Auger, 2019/08/22
- [Qemu-devel] [PATCH v4 4/5] hw/arm/smmuv3: Log a guest error when decoding an invalid STE, Eric Auger, 2019/08/22
- [Qemu-devel] [PATCH v4 5/5] hw/arm/smmuv3: Remove spurious error messages on IOVA invalidations, Eric Auger, 2019/08/22
- Re: [Qemu-devel] [PATCH v4 0/5] ARM SMMUv3: Fix spurious notification errors and fail with VFIO, Peter Maydell, 2019/08/27