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? Probably you'll find that if UEFI is configuring the GIC interrupt groups FreeBSD will boot even without doing it itself, but I think ideally FreeBSD shouldn't assume the bootloader's done that job for it. thanks -- PMM
