On 12.06.25 17:28, Lorenzo Stoakes wrote:
On Wed, Jun 11, 2025 at 02:06:52PM +0200, David Hildenbrand wrote:
We setup the cache mode but ... don't forward the updated pgprot to
insert_pfn_pud().
Only a problem on x86-64 PAT when mapping PFNs using PUDs that
require a special cachemode.
Fix it by using the proper pgprot where the cachemode was setup.
Identified by code inspection.
Fixes: 7b806d229ef1 ("mm: remove vmf_insert_pfn_xxx_prot() for huge page-table
entries")
Cc: <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
Nice catch!
Reviewed-by: Lorenzo Stoakes <[email protected]>
Thanks! What's your opinion on stable? Really hard to judge the impact ...
--
Cheers,
David / dhildenb
