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[PATCH V2 0/5] Fix UNMAP notifier for intel-iommu
From: |
Jason Wang |
Subject: |
[PATCH V2 0/5] Fix UNMAP notifier for intel-iommu |
Date: |
Thu, 23 Feb 2023 14:59:19 +0800 |
Hi All:
According to ATS, device should work if ATS is disabled. This is not
correctly implemented in the current intel-iommu since it doesn't
handle the UNMAP notifier correctly. This breaks the vhost-net +
vIOMMU without dt.
The root casue is that the when there's a device IOTLB miss (note that
it's not specific to PCI so it can work without ATS), Qemu doesn't
build the IOVA tree, so when guest start an IOTLB invalidation, Qemu
won't trigger the UNMAP notifier.
Fixing this by triggering UNMAP notifier in those cases.
Thanks
Changes since V1:
- Do not depend on the iova tree for such kind of invalidation but
simply tries to do UNMAP for all attached IOMMU notifiers
Jason Wang (4):
intel-iommu: fail MAP notifier without caching mode
intel-iommu: fail DEVIOTLB_UNMAP without dt mode
memory: introduce memory_region_unmap_iommu_notifier_range()
smmu: switch to use memory_region_unmap_iommu_notifier_range()
Peter Xu (1):
intel-iommu: send UNMAP notifications for domain or global inv desc
hw/arm/smmu-common.c | 16 +---------------
hw/i386/intel_iommu.c | 29 ++++++++++++++++++++++++-----
include/exec/memory.h | 10 ++++++++++
softmmu/memory.c | 13 +++++++++++++
4 files changed, 48 insertions(+), 20 deletions(-)
--
2.25.1
- [PATCH V2 0/5] Fix UNMAP notifier for intel-iommu,
Jason Wang <=
- [PATCH V2 1/5] intel-iommu: fail MAP notifier without caching mode, Jason Wang, 2023/02/23
- [PATCH V2 2/5] intel-iommu: fail DEVIOTLB_UNMAP without dt mode, Jason Wang, 2023/02/23
- [PATCH V2 3/5] memory: introduce memory_region_unmap_iommu_notifier_range(), Jason Wang, 2023/02/23
- [PATCH V2 4/5] smmu: switch to use memory_region_unmap_iommu_notifier_range(), Jason Wang, 2023/02/23
- [PATCH V2 5/5] intel-iommu: send UNMAP notifications for domain or global inv desc, Jason Wang, 2023/02/23
- Re: [PATCH V2 0/5] Fix UNMAP notifier for intel-iommu, Peter Xu, 2023/02/23