Re: [Qemu-devel] [PATCH] kvm: Fix memory slot page alignment logic

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On 10.11.14 14:55, Peter Maydell wrote:
> On 10 November 2014 13:16, Alexander Graf <agraf@xxxxxxx> wrote:
>> Sorry, I don't understand this paragraph. Memory slots in general are
>> accelerations for memory access - for MMIO (RAM is usually aligned), KVM
>> can always exit to QEMU and just do a manual MMIO exit.
> 
> ...you're a bit stuck if you were hoping to execute code from
> that RAM, though, so they're not *purely* acceleration, right?

Yes and no. Technically, there's no reason KVM couldn't do an MMIO exit
dance to fetch the next instruction. From user space this should be
indistinguishable.

Today, I don't think it's implemented though :).


Alex
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