Re: kvm_gfn_to_pfn_cache_refresh started getting a warning recently

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 4/26/22 18:45, Sean Christopherson wrote:
> On Tue, Apr 26, 2022, Maxim Levitsky wrote:
> > [  390.511995] BUG: sleeping function called from invalid context at include/linux/highmem-internal.h:161
> > [  390.513681] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 4439, name: CPU 0/KVM
>
> This is my fault.  memremap() can sleep as well.  I'll work on a fix.

Indeed, "KVM: Fix race between mmu_notifier invalidation and pfncache 
refresh" hadn't gone through a full test cycle yet.

Paolo