Re: [Xen-devel] ARM Guest VM Type

[Tamas Lengyel <tamas.lengyel@xxxxxxxxxxxx>]

What about paging? On x86 it's configurable whether I want the guest to use shadow or HAP via hap=0/1 but I haven't find anything about that for the ARM side. Looking at the source I got the feeling that it's shadow paging if the guest is created with the config shown in http://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions#DomU_kernel_and_DTS. Please correct me if I'm wrong! Thanks =)

On Sat, Apr 26, 2014 at 4:17 PM, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> wrote:

On Fri, 25 Apr 2014, Wei Huang wrote:
> According to enlighten.c in Kernel, ARM DomU is considered as HVM domain.
> However when the DomU is created, its property isn't configured to reflect
> this (XEN_DOMCTL_CDF_xxx) in tools. So is_hvm_domain(d) will return FALSE
> inside hypervisor.
>
> Error?

It is not really an error, more an inconsistency. In reality the old
"PV" and "HVM" labels don't fit ARM guests very well.

From Linux POV it makes sense to think of ARM guests as HVM guests.
If it makes sense to do the same in Xen, then we might as well set the
flag.

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