On 2024/11/5 00:42, Lorenzo Stoakes wrote:
On Sat, Nov 02, 2024 at 02:45:35AM +0100, Jann Horn wrote:
On Fri, Nov 1, 2024 at 7:50 PM Lorenzo Stoakes
[...]
+
+Page table locks
+----------------
Many thanks to Lorenzo for documenting page table locks! This is really
needed. And at a glance, I agree with Jann's additions.
(except last-level page tables: khugepaged already deletes those for
file mappings without using the mmap lock at all in
retract_page_tables(), and there is a pending series that will do the
same with page tables in other VMAs too, see
<https://lore.kernel.org/all/cover.1729157502.git.zhengqi.arch@xxxxxxxxxxxxx/>)
Thanks to Jann for mentioning this series, I just updated it to v2
recently:
https://lore.kernel.org/lkml/cover.1730360798.git.zhengqi.arch@xxxxxxxxxxxxx/
Ugh wut OK haha. Will look into this.
Thanks!
