On Tue, 11 Aug 2020 11:27:23 +0100, Will Deacon wrote:
> While stress-testing my arm64 stage-2 page-table rewrite [1], I ran into
> a sleeping while atomic BUG() during OOM that I can reproduce with
> mainline.
>
> The problem is that the arm64 page-table code periodically calls
> cond_resched_lock() when unmapping the stage-2 page-tables, but in the
> case of OOM, this occurs in atomic context.
>
> [...]
Applied to kvm-arm64/pt-rework-base, thanks!
[1/2] KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
commit: 462a296d8a2004063ab3c6b4df07d6f165786734
[2/2] KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set
commit: 78dcf128f9bb3a6a3950a21cf097cdc48cf3f505
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
