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Date:   Tue, 26 Apr 2022 16:45:03 +0000
From:   Sean Christopherson <seanjc@google.com>
To:     Maxim Levitsky <mlevitsk@redhat.com>
Cc:     "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        David Woodhouse <dwmw2@infradead.org>
Subject: Re: kvm_gfn_to_pfn_cache_refresh started getting a warning recently
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References: <e415e20f899407fb24dfb8ecbc1940c5cb14a302.camel@redhat.com>
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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.