[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC 0 PATCH 3/3] PVH dom0: construct_dom0 changes
On Fri, Oct 04, 2013 at 05:07:59PM +0100, Jan Beulich wrote: > >>> On 04.10.13 at 18:02, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > >>> wrote: > > So back to hooking up a new hypercall in the PCI subsystem when > > resource assigment has been completed? And also if the PCI subsystem > > decides to re-write the resource addresses to odd locations. > > > > Can't one also trap for the configuration changes on the PCI > > devices and extract the physical locations then? > > Yes, of course we could be snooping the CFG writes, but that's > as simple as it sounds only for the port CF8 based accesses. For > MCFG based accesses it would mean we'd have to write protect > the whole MCFG range, and use emulation there. Not very > pretty, but doable. Hypervisor call is then a more appropiate if it can be done (Mukesh says that v0 of the patch had something like that in so he will try to recreate it) and then as a fallback we could do the emulation. > > Jan > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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