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[PATCH v2 0/4] Optimize UNMAP call and bug fix
From: |
Zhenzhong Duan |
Subject: |
[PATCH v2 0/4] Optimize UNMAP call and bug fix |
Date: |
Thu, 1 Jun 2023 14:33:16 +0800 |
Hi All,
This is an extention to original patch [1] based on discuss in [2].
1. Fixed a potential VFIO migration issue Peter found, and optimize
VFIO dirty page sync in intel_iommu incidentally.
2. Clarify the definition of replay() to match existent optimization
in intel_iommu.
3. Optimize out some potential UNMAP calls
Tested net card passthrough, ping/ssh pass
Tested DSA vdev passthrough, start dmatest then do live migration, pass.
I checked the LM performance before and after patch, no explicit difference.
I think it may because dirty page sync isn't an important factor in LM
and it's small in number in my test, 4 or 5.
[1] https://lists.gnu.org/archive/html/qemu-devel/2023-05/msg05549.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2023-05/msg06708.html
Thanks
Zhenzhong Duan (4):
util: Add iova_tree_foreach_range_data
intel_iommu: Fix a potential issue in VFIO dirty page sync
memory: Document update on replay()
intel_iommu: Optimize out some unnecessary UNMAP calls
hw/i386/intel_iommu.c | 75 +++++++++++++++++++++++++++++-----------
hw/vfio/common.c | 2 +-
include/exec/memory.h | 19 ++++++++--
include/qemu/iova-tree.h | 17 +++++++--
softmmu/memory.c | 4 +++
util/iova-tree.c | 31 +++++++++++++++++
6 files changed, 122 insertions(+), 26 deletions(-)
--
2.34.1
- [PATCH v2 0/4] Optimize UNMAP call and bug fix,
Zhenzhong Duan <=
- [PATCH v2 1/4] util: Add iova_tree_foreach_range_data, Zhenzhong Duan, 2023/06/01
- [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Zhenzhong Duan, 2023/06/01
- Re: [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Peter Xu, 2023/06/05
- RE: [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Duan, Zhenzhong, 2023/06/05
- Re: [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Peter Xu, 2023/06/06
- RE: [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Duan, Zhenzhong, 2023/06/06
- Re: [PATCH v2 2/4] intel_iommu: Fix a potential issue in VFIO dirty page sync, Peter Xu, 2023/06/07
[PATCH v2 3/4] memory: Document update on replay(), Zhenzhong Duan, 2023/06/01