On Thu, 10 Apr 2025 16:50:33 +0200 Alexander Gordeev <agord...@linux.ibm.com> wrote:
> On Tue, Apr 08, 2025 at 06:07:32PM +0200, Alexander Gordeev wrote: > > Hi Andrew, > > > The lazy MMU mode can only be entered and left under the protection > > of the page table locks for all page tables which may be modified. > > Heiko Carstens noticed that the above claim is not valid, since > v6.15-rc1 commit 691ee97e1a9d ("mm: fix lazy mmu docs and usage"), > which restates it to: > > "In the general case, no lock is guaranteed to be held between entry and exit > of the lazy mode. So the implementation must assume preemption may be enabled" > > That effectively invalidates this patch, so it needs to be dropped. > > Patch 2 still could be fine, except -stable and Fixes tags and it does > not need to aim 6.15-rcX. Do you want me to repost it? I dropped the whole series - let's start again.