On Fri, 3 Jul 2020 at 10:44, Heyi Guo <guoh...@linux.alibaba.com> wrote: > > vms->psci_conduit being disabled only means PSCI is not implemented by > qemu; it doesn't mean PSCI is not supported on this virtual machine. > Actually vms->psci_conduit is set to disabled when vms->secure and > firmware_loaded are both set, which means we will run ARM trusted > firmware, which will definitely provide PSCI. > > The issue can be reproduced when running qemu in TCG mode with secure > enabled, while using ARM trusted firmware + qemu virt UEFI as firmware > binaries, and we can see secondary cores will not be waken up.
If you're using a real EL3 guest firmware then it's the job of the guest firmware to provide a DTB to the guest EL2/EL1 that says "and I support PSCI" if it supports PSCI, surely? QEMU can't tell whether the EL3 code does or doesn't do that... thanks -- PMM
