[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC PATCH v2 3/3] tools, libxl: handle the iomem parameter with the memory_mapping hcall
Hi Ian, On 03/14/2014 09:46 AM, Ian Campbell wrote: >> In Arianna's case, it think it would be more than fine to implement it >> that way, and call it from within the OS, isn't this the case, Arianna? > > It's certainly an option, and it would make a lot of the toolstack side > issues moot but I'm not at all sure it is the right answer. In > particular although it might be easy to bodge a mapping into many OSes I > can imagine getting such a think into something generic like Linux might > be more tricky -- in which case perhaps the toolstack should be taking > care of it, and that does have a certain appeal from the simplicity of > the guest interface side of things. The generic way for Linux (and other oses) is to use device tree passthrough. I still think the "iomem" is a hackish way to passthrough the hardware to guest. People who will use this solution are aware of there kernel should map itself the region. >> Also, just trying to recap, for Arianna's sake, moving the >> implementation of the DOMCTL in common code (and implementing the >> missing bits to make it works properly, of course) is still something we >> want, right? > > *If* we go the route of having the kernel make the mapping then there is > no need, is there? How the kernel will map the region? Regards, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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