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xen-devel
Re: [Xen-devel] [PATCH,RFC 0/17] 32-on-64 work progress
>>> Gerd Hoffmann <kraxel@xxxxxxx> 10/11/06 11:11 AM >>>
>>>> In an attempt to get some feedback on the ways I'm currently implementing
>>>> this, I'm sending the set of patches as I currently have them. These permit
>>>> a 32-bit PAE Linux dom0 kernel to come up on a 64-bit hypervisor, but
>>>> progress only goes this far currently (very early during invocation of the
>>>> first user mode code page table permissions aren't set correctly yet,
>>>> making
>>>> Xen kill the guest).
>
>Do you have any plans how domU bootup is going to work? Especially how
>hypercalls where one domain (typically dom0) changes the state of
>another domain are supposed to work? That includes the complete
>XEN_DOMCTL_* family, also some memory management hypercalls such as
>mach2phys and pagetable updates, maybe more. These are used by the
>domain tools to create a new domain and somehow must handle the case
>that we want be able to build 32bit guest domains from a 64bit dom0 (and
>visa versa?).
I didn't spend thoughts on the tools side - Emmanuel was expected to
work from that side I think. surely what you say needs to be considered
(and for the part of those hypercalls already implemented should already be,
minus any bugs or oversights)
Jan
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