Messages in this thread | | | Date | Wed, 23 Jan 2019 12:50:18 -0500 | From | Konrad Rzeszutek Wilk <> | Subject | Re: [PATCH v5 04/13] KVM: Introduce a new guest mapping API |
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> + if (dirty) > + kvm_release_pfn_dirty(map->pfn); > + else > + kvm_release_pfn_clean(map->pfn); > + map->hva = NULL;
I keep on having this gnawing feeling that we MUST set map->page to NULL.
That is I can see how it is not needed if you are using 'map' and 'unmap' together - for that we are good. But what I am worried is that some one unmaps it .. and instead of checking map->hva they end up checking map->page and think the page is mapped.
Would you be OK adding that extra statement just as a fail-safe mechanism in case someones misues the APIs?
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