Re: [Xen-devel] [RFC PATCH v4 5/7] xen/pvh: Move Xen code for getting mem map via hcall out of common file

[Juergen Gross <jgross@xxxxxxxx>]

On 28/02/18 19:28, Maran Wilson wrote:
> We need to refactor PVH entry code so that support for other hypervisors
> like Qemu/KVM can be added more easily.
> 
> The original design for PVH entry in Xen guests relies on being able to
> obtain the memory map from the hypervisor using a hypercall. When we
> extend the PVH entry ABI to support other hypervisors like Qemu/KVM,
> a new mechanism will be added that allows the guest to get the memory
> map without needing to use hypercalls.
> 
> For Xen guests, the hypercall approach will still be supported. In
> preparation for adding support for other hypervisors, we can move the
> code that uses hypercalls into the Xen specific file. This will allow us
> to compile kernels in the future without CONFIG_XEN that are still capable
> of being booted as a Qemu/KVM guest via the PVH entry point.
> 
> Signed-off-by: Maran Wilson <maran.wilson@xxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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