[PATCH] arm64: mm: fix warning in arch_faults_on_old_pte()

[Catalin Marinas]

On Tue, Jun 15, 2021 at 11:52:30AM +0100, Will Deacon wrote:
> On Sun, Jun 13, 2021 at 03:47:28PM -0600, Yu Zhao wrote:
> > cow_user_page() doesn't disable preemption, and it triggers the
> > warning in arch_faults_on_old_pte() when CONFIG_PREEMPT_COUNT=y.
> 
> Doesn't kmap_atomic() disable preemption?

Good point, I missed that. I wonder whether there are additional patches
on top that replace it with kmap_local_page(). I couldn't see any in
-next.

-- 
Catalin