>>> On 18.02.15 at 21:13, <suravee.suthikulpa...@amd.com> wrote: > On 2/18/2015 6:48 AM, Julien Grall wrote: >> Wouldn't it be possible to route the SPI dynamically when the domain >> decide to use the MSI n? We would need to implement PHYSDEVOP_map_pirq >> for MSI. > > Enabling MSI is done by each end-point PCI device drivers in the guest. > In Linux, this would mean that when the driver tries to allocate an MSI > interrupt, it would need to communicate back to Xen (possibly via > hypercall as you pointed out) to get the next available SPI. It is not > necessary for now. I am planning to revisit this when we try to > implement pass-through support. Lemme know if you think this should be > handled differently.
I think guest MSI setup should work at least similarly (if identically is not possible) to x86, i.e. via the vpci interface. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
