On 09.09.25 04:16, Andrew Morton wrote:
On Mon, 8 Sep 2025 08:39:24 +0100 Kevin Brodsky <[email protected]> wrote:
The main change enabling nesting is patch 2, following the approach
suggested by Catalin Marinas [4]: have enter() return some state and
the matching leave() take that state.
This is so totally the correct way. Thanks.
Staring at this, I wonder if we could alternatively handle it like
pagefault_disable()/pagefault_enable(), having something like
current->lazy_mmu_enabled.
We wouldn't have to worry about preemption in that case I guess (unless
the arch has special requirements).
Not sure if that was already discussed, just a thought.
--
Cheers
David / dhildenb
