On 2022/5/10 20:45, Jason Gunthorpe wrote:
On Tue, May 10, 2022 at 08:35:00PM +0800, Zhangfei Gao wrote:
Thanks Yi and Eric,
Then will wait for the updated iommufd kernel for the PCI MMIO region.
Another question,
How to get the iommu_domain in the ioctl.
The ID of the iommu_domain (called the hwpt) it should be returned by
the vfio attach ioctl.
yes, hwpt_id is returned by the vfio attach ioctl and recorded in
qemu. You can query page table related capabilities with this id.
https://lore.kernel.org/kvm/20220414104710.28534-16-yi.l.liu@xxxxxxxxx/
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Regards,
Yi Liu
