On 2020/6/5 上午12:49, Michael S. Tsirkin wrote:
2. Second argument to translate_desc is a GPA, isn't it?
No, it's IOVA, this function will be called only when IOTLB is enabled.
Thanks
Right IOVA. Point stands how does it make sense to cast
a userspace pointer to an IOVA? I guess it's just
because it's talking to qemu actually, so it's abusing
the notation a bit ...
Yes, but the issues are:
1) VHOST_SET_VRING_ADDR is used for iotlb and !iotlb
2) so did the memory accessors
Unless we differ separate IOTLB datapath out, there's probably not easy
to have another notation.
Thanks
