On 28.08.25 20:09, Lorenzo Stoakes wrote:
On Thu, Aug 28, 2025 at 12:01:37AM +0200, David Hildenbrand wrote:
There is the concern that unpin_user_page_range_dirty_lock() might do
some weird merging of PFN ranges -- either now or in the future -- such
that PFN range is contiguous but the page range might not be.
Let's sanity-check for that and drop the nth_page() usage.
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Seems one user uses SG and the other is IOMMU and in each instance you'd
expect physical contiguity (maybe Jason G. or somebody else more familiar
with these uses can also chime in).
Right, and I added the sanity-check so we can identify and fix any such
wrong merging of ranges.
Thanks!
--
Cheers
David / dhildenb
