Re: arm64 regression in kernel 5.12 related to the (n)VHE
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2021-08-12 08:36:01
On 8/11/2021 11:51 PM, Marc Zyngier wrote: [snip]
quoted
CPU: All CPU(s) started at EL2Interestingly, all your CPUs are booting at EL2. Which is great. Can you try and enable KVM on your existing 5.10 kernel? Just selecting CONFIG_KVM should be enough. Does it boot correctly with KVM enabled? My suspicion is that the firmware doesn't set SCR_EL3.HCE, and that the HVC instruction UNDEFs at EL1. That would be bad news.
Other Brahma-B53 devices that we work with (set-top box and cable modem chips) boot 5.12 and beyond correctly, and indeed, our EL3 firmware sets-up SCR_EL3.HCE. -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel