Messages in this thread | | | Date | Mon, 26 Mar 2012 08:31:48 +0200 | From | "Michael S. Tsirkin" <> | Subject | Re: [PATCH RFC dontapply] kvm_para: add mmio word store hypercall |
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On Sun, Mar 25, 2012 at 04:25:38PM -0700, H. Peter Anvin wrote: > On 03/25/2012 03:05 PM, Michael S. Tsirkin wrote: > > We face a dilemma: IO mapped addresses are legacy, > > so, for example, PCI express bridges waste 4K > > of this space for each link, in effect limiting us > > to 16 devices using this space. > > That is *only* if they are physical devices on PCIe links. For virtual > devices you have no such limitation.
Why don't we? We emulate pci express with exact same limitations for virtual and physical devices.
> What is the problem again? > > -hpa > > -- > H. Peter Anvin, Intel Open Source Technology Center > I work for Intel. I don't speak on their behalf.
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