Re: [PATCH] fix ia64 breakage with PHYSDEVOP_pirq_eoi_mfn (was Re: [Xen-devel] [PATCH 2/2] linux/x86: use shared page indicating the need for an EOI notification)

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 03/12/2008 09:59, "Isaku Yamahata" <yamahata@xxxxxxxxxxxxx> wrote:

> On the other hand on ia64 MMU is fully virtualized (i.e. auto translated
> phsymap mode enabled) and DMA is paravirtualized.
> So addresses for MMU and DMA have to be distinguished.
> xxx_to_machine() is used for MMU and xxx_to_bus() is used for DMA.

If you are fully virtualised then gmfn should mean gpfn, and
arbitrary_virt_to_machine() is correct, isn't it? I can't see a situation
where arbitrary_virt_to_machine() wouldn't correctly give you a gmfn (after
all, it gets you a machine address in guest context, as its name describes
:-). 

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel