On Wed, May 20, 2020 at 11:54:39PM +0530, Kirti Wankhede wrote:
> In _SAVING|_RUNNING device state or pre-copy phase:
> - read pending_bytes. If pending_bytes > 0, go through below steps.
> - read data_offset - indicates kernel driver to write data to staging
> buffer.
> - read data_size - amount of data in bytes written by vendor driver in
> migration region.
> - read data_size bytes of data from data_offset in the migration region.
> - Write data packet to file stream as below:
> {VFIO_MIG_FLAG_DEV_DATA_STATE, data_size, actual data,
> VFIO_MIG_FLAG_END_OF_STATE }
Hi, Kirti,
(Sorry if this question is silly, since I didn't follow up with all these
threads...)
Can I understand this commit as it only tracks dirty device BAR memory but not
guest system memory? How did you track device writes to system memory when
without the vIOMMU?
Thanks,
--
Peter Xu
