Re: [Xen-devel] HVMlite ABI specification DRAFT C + implementation outline

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 11.02.16 at 12:10, <roger.pau@xxxxxxxxxx> wrote:
>  * PCI Express MMCFG: no MMCFG areas will be mapped by default into the guest
>    memory map. In order to have these areas mapped the hardware domain
>    must use the PHYSDEVOP_pci_mmcfg_reserved hypercall. On successful return
>    from this hypercall the requested MMCFG areas will be mapped 1:1 into the
>    guest memory space.

This is too strict: When the address range is reserved in E820, the
hypervisor will happily use that MMCFG, and hence I see no reason
why it then wouldn't also map it for Dom0.

Jan


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