Messages in this thread | | | Subject | Re: [PATCH 1/2] KVM: MMU: Do not treat ZONE_DEVICE pages as being reserved | From | Paolo Bonzini <> | Date | Wed, 6 Nov 2019 18:14:40 +0100 |
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On 06/11/19 18:07, Sean Christopherson wrote: > void kvm_get_pfn(kvm_pfn_t pfn) > { > - if (!kvm_is_reserved_pfn(pfn)) > + if (!kvm_is_reserved_pfn(pfn) && !WARN_ON(kvm_is_zone_device_pfn(pfn))) > get_page(pfn_to_page(pfn)); > } > EXPORT_SYMBOL_GPL(kvm_get_pfn);
Can you call remap_pfn_range with a source address that is ZONE_DEVICE? If so, you would get a WARN from the kvm_get_pfn call in hva_to_pfn_remapped.
Paolo
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