On 2020/8/19 下午11:50, Peter Xu wrote:
On Wed, Aug 19, 2020 at 03:15:26PM +0800, Jason Wang wrote:
Yes, actually, I feel confused after reading the codes. Is notifier->start
IOVA or GPA?
In vfio.c, we did:
iommu_notifier_init(&giommu->n, vfio_iommu_map_notify,
IOMMU_NOTIFIER_ALL,
section->offset_within_region,
int128_get64(llend),
iommu_idx);
So it looks to me the start and end are GPA, but the assertion above check
it against IOVA which seems to be wrong ....
It should be iova; both section->offset_within_region and llend are for the
device's iova address space. Thanks,
Interesting, how can memory region know which IOVA is used by guest?
Thanks
