Re: [PATCH v2] mm: Track page table modifications in __apply_to_page_range()

Hi!

The __apply_to_page_range() function is also used to change and/or allocate page-table pages in the vmalloc area of the address space. Make sure these changes get synchronized to other page-tables in the system by calling arch_sync_kernel_mappings() when necessary.

Tested-by: Chris Wilson chris@chris-wilson.co.uk #x86-32 Cc: stable@vger.kernel.org # v5.8+ Signed-off-by: Joerg Roedel jroedel@suse.de

This seems to solve screen blinking problems on Thinkpad X60. (It already survived few unison runs, which would usually kill it.).

Tested-by: Pavel Machek pavel@ucw.cz

Thanks and best regards, Pavel