On 2019/7/11 下午9:56, Eric Auger wrote:
This series brings the VFIO part of HW nested paging support
in the SMMUv3.
The series depends on:
[PATCH v9 00/14] SMMUv3 Nested Stage Setup (IOMMU part)
(https://www.spinics.net/lists/kernel/msg3187714.html)
3 new IOCTLs are introduced that allow the userspace to
1) pass the guest stage 1 configuration
2) pass stage 1 MSI bindings
3) invalidate stage 1 related caches
They map onto the related new IOMMU API functions.
We introduce the capability to register specific interrupt
indexes (see [1]). A new DMA_FAULT interrupt index allows to register
an eventfd to be signaled whenever a stage 1 related fault
is detected at physical level. Also a specific region allows
to expose the fault records to the user space.
Best Regards
Eric
This series can be found at:
https://github.com/eauger/linux/tree/v5.3.0-rc0-2stage-v9
It series includes Tina's patch steming from
[1] "[RFC PATCH v2 1/3] vfio: Use capability chains to handle device
specific irq" plus patches originally contributed by Yi.
Thanks Eric.
Have tested vfio mode in qemu on Hisilicon arm64 platform, using gIOVA
qemu command: -machine virt,gic_version=3,iommu=smmuv3 -device
vfio-pci,host=0000:75:00.1
Tested-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
qemu: https://github.com/eauger/qemu/tree/v4.1.0-rc0-2stage-rfcv5
kernel: https://github.com/eauger/linux/tree/v5.3.0-rc0-2stage-v9
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