Messages in this thread | | | Date | Mon, 21 May 2012 16:15:50 +0800 | From | Xiao Guangrong <> | Subject | Re: [PATCH] KVM: fix async page fault working for readonly mapping |
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On 05/21/2012 04:08 PM, Gleb Natapov wrote:
> On Mon, May 21, 2012 at 02:45:45PM +0800, Xiao Guangrong wrote: >> If we map a readonly memory space from host to guest and the page is >> not currently mapped in the host, we will get a fault-pfn and async >> is not allowed, then the vm will crash >> > Why would we want to map a readonly memory space from host to guest? > We may want to do it to support memory semantics on read and mmio on > write, but do not right now unless something changed while I was not > looking.
Some test cases in kvm-unit-tests and the benchmark i am writing for KVM need map the function on host to guest.
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