[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 5/8] ioreq-server: add support for multiple servers
On Wed, 2014-04-09 at 13:43 +0100, Jan Beulich wrote: > >>> On 02.04.14 at 17:11, <paul.durrant@xxxxxxxxxx> wrote: > > Secondary servers use guest pages to communicate with emulators, in > > the same way as the default server. These pages need to be in the > > guest physmap otherwise there is no suitable reference that can be > > queried by an emulator in order to map them. Therefore a pool of > > pages in the current E820 reserved region, just below the special > > pages is used. Secondary servers allocate from and free to this pool > > as they are created and destroyed. > > Ah, here is the answer to the question I raised on patch 6 - somehow > I managed to look at them in wrong order. Nevertheless, and also in > the context of the discussion we had with Stefano yesterday, we may > want/need to think of a way to allow pages to be trackable without > being mapped in the physmap. Is what is wanted a new XENMAPSPACE which could be used via xen_add_to_physmap_batch to map foreign_dom.idx where idx for that mapspace is the ioreq page index rather than a gfn? Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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