On 5/6/2020 1:45 PM, Yan Zhao wrote:
On Mon, May 04, 2020 at 11:58:56PM +0800, Kirti Wankhede wrote:
<snip>
/*
* Helper Functions for host iova-pfn list
*/
@@ -567,6 +654,18 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data,
vfio_unpin_page_external(dma, iova, do_accounting);
goto pin_unwind;
}
+
+ if (iommu->dirty_page_tracking) {
+ unsigned long pgshift =
+ __ffs(vfio_pgsize_bitmap(iommu));
+
hi Kirti,
may I know if there's any vfio_pin_pages() happpening during NVidia's vGPU
migration?
the code would enter into deadlock as I reported in last version.
Hm, you are right and same is the case in vfio_iommu_type1_dma_rw_chunk().
Instead of calling vfio_pgsize_bitmap() from lots of places, I'm
thinking of saving pgsize_bitmap in struct vfio_iommu, which should be
populated whenever domain_list is updated. Alex, will that be fine?
Thanks,
Kirti
Thanks
Yan
