On 23 June 2016 at 07:36, Laszlo Ersek <ler...@redhat.com> wrote: > On 06/22/16 22:53, Peter Maydell wrote: >> On 22 June 2016 at 19:09, Ed Maste <ema...@freebsd.org> wrote: >>> On 15 June 2016 at 06:10, Peter Maydell <peter.mayd...@linaro.org> wrote: >>>> >>>> A quick scan through http://fxr.watson.org/fxr/source/arm64/arm64/gic_v3.c >>>> doesn't seem to show it setting the IGROUPR registers anywhere, >>>> so it probably is a guest bug. (You can use "-d 'trace:gicv3*'" to >>>> enable the tracepoints for the GIC which would let you check whether >>>> the guest ever tries to write to the group config registers.) >>> >>> Is there a prebuilt QEMU_EFI.fd available somewhere for testing a >>> FreeBSD change to address this? I've been using the prebuilt ones from >>> https://wiki.linaro.org/LEG/UEFIforQEMU and the latest one I had did >>> not start with gic-version=3. >> >> Yeah, it looks like the same bug is also present in UEFI itself >> (it's super popular!). Laszlo, Ard, do you have a prebuilt >> UEFI binary with Ard's fix? > > I just put up one here, in case it's still needed: > > http://people.redhat.com/~lersek/82a5e88f-f1e1-42e2-8462-66974c9cbfff/
Thank you. I ran your QEMU_EFI.fd with gic_version=3 and UEFI and FreeBSD start up successfully (as expected, based on the discussion in this thread). It sounds like we'll need to build a hacked UEFI build as Peter Maydell suggested in order to actually test a FreeBSD fix when we have it. -Ed
