On Wed, Aug 14, 2013 at 10:20:03PM +0200, Andre Przywara wrote: > On 08/14/2013 08:54 PM, Rob Herring wrote: > >On Wed, Aug 14, 2013 at 4:22 AM, Andre Przywara > ><andre.przywara@xxxxxxxxxxx> wrote: > >>Guest kernels with CONFIG_L2X0 set (for instance Highbank or OMAP4) > >>will trigger SMCs to handle the L2 cache controller (PL310). > >>This will currently inject #UNDEFs and eventually stop the guest. > >> > >>We don't need explicit L2 cache controller handling on A15s anymore, > >>so it is safe to simply ignore these calls and proceed with the next > >>instruction. > >> > >>Signed-off-by: Andre Przywara <andre.przywara@xxxxxxxxxxx> > >>--- > >> arch/arm/kvm/handle_exit.c | 20 ++++++++++++++++++++ > >> 1 file changed, 20 insertions(+) > > > >At least for highbank, we can fix this in the kernel: > > Yes, and we should do. But that won't fix older guest kernels, say > Ubuntu 12.10 or the like. And I think this is a use case for > virtualization, so we need both, guest and host fix. > Agreed, but we need a more generic solution for the secure call handling. I've created a backlog item in Linaro's JIRA (CARD-801) for this work, let's see how quickly we can get it approved and put on the roadmap. -Christoffer _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
