On 20/12/2019 14:19, Jan Beulich wrote:
> All that really matters is whether writability of a page changes; in
> paticular e.g. page table -> page table (but different levels)
> transitions do not require unmapping the page from the IOMMU again.
>
> Note that the XSA-288 fix did arrange for PGT_non
All that really matters is whether writability of a page changes; in
paticular e.g. page table -> page table (but different levels)
transitions do not require unmapping the page from the IOMMU again.
Note that the XSA-288 fix did arrange for PGT_none pages not needing
special consideration here.
