On Wed, Jul 24, 2019 at 4:07 AM Julien Grall <julien.gr...@arm.com> wrote: > > Hi, > > On 23/07/2019 18:55, Roman Shaposhnik wrote: > > It would be great to have Xen running on RPi, but I have to wonder: is > > it now possible to workaround RPi limitations of how GPU boots? > > https://www.raspberrypi.org/forums/viewtopic.php?t=187086#p1206487 > > > > I thought that this is completely locked, proprietary bcm2837 code > > that Xen can't do much of anything about. > > That's not really a problem. People have managed to get other hypervisor > running > on RPI. The major issue is going to be the interrupt controller, the RPI3 does > not have a GIC which is a requirement for using Xen. > > If you want to get Xen working on RPI3, then you would at least need to > provide > driver for the interrupt controller and emulate it for the guests. > Alternatively > you could provide a PV interface as x86 use to do. Both cases are going to > require a fair amount of work and very unlikely to be accepted upstream. I > would > like to keep Xen small and simple. > > Anyway, Rasberry PI foundation just release RPI4 which now contain a GIC. So > this should make easier to get Xen working on the platform. > > Andre (in CC) has been working on porting Arm Trusted Firmware to the RPI4 and > manage to get Xen booting up to the stage of bringing-up secondary CPUs (see > [1]. > > I also bought a RPI4 so I will have a go at Xen when I have some spare time. > > Cheers, > > [1] https://lists.xenproject.org/archives/html/xen-users/2019-07/msg00032.html
This is very exciting! Thanks for sharing. Stefano, is this something on your radar? Thanks, Roman. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
