On Fri, 18 Dec 2020 at 15:00, Russell King - ARM Linux admin <[email protected]> wrote: > > On Fri, Dec 18, 2020 at 01:48:09PM +0000, Guillaume Tucker wrote: > > Please see the bisection report below about a boot failure on > > ox820-cloudengines-pogoplug-series-3. There was also a bisection > > yesterday with next-20201216 which landed on the same commit, on > > the same platform and also with oxnas_v6_defconfig. I'm not > > aware of any other platform on kernelci.org showing the same > > regression. > > Ah, I bet I know what's happening. > > We test for the presence of VFP by issuing an instruction to read > FPSID. If VFP is not present, this will raise an undefined instruction > exception, and we expect to head into the vfp_testing_entry code. > > I bet Pogoplug, being an ARM11 MPCore platform, either raises an > exception here. > > We probably need to also rework the code in vfp_init() as well to > register a temporary hook when reading the FPSID. >
Thanks for diagnosing that - I wasn't quite sure what was going on. I will look into this later today.
