Messages in this thread | | | From | "Raslan, KarimAllah" <> | Subject | Re: [PATCH] kvm, x86: Properly check whether a pfn is an MMIO or not | Date | Thu, 15 Sep 2016 05:54:43 +0000 |
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> On Jun 22, 2016, at 3:41 PM, Paolo Bonzini <pbonzini@redhat.com> wrote: > > > > On 22/06/2016 04:34, KarimAllah Ahmed wrote: >> pfn_valid check is not sufficient because it only checks if a page has a struct >> page or not, if for example "mem=" was passed to the kernel some valid pages >> won't have a struct page. This means that if guests were assigned valid memory >> that lies after the mem= boundary it will be passed uncached to the guest no >> matter what the guest caching attributes are for this memory. > > How can you pass memory after the mem= boundary to the guest?
Does my previous reply answer your question?
> > Paolo >
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