17 Sep
2020
17 Sep
'20
3:26 p.m.
A correction...
-----Original Message----- From: TF-A tf-a-bounces@lists.trustedfirmware.org On Behalf Of Dan Handley via TF-A Sent: 17 September 2020 15:14
I want to handle something similar in OP-TEED along with EHF depending on
what is the expected behavior.
Hmm, I thought OP-TEED was more like the TSP_NS_INTR_ASYNC_PREEMPT=0 case, where NS interrupts are routed to S-EL1 while processing a yielding SMC in S- EL1? Perhaps that's a better TSPD config for you to follow?
Sorry, if EL3_EXCEPTION_HANDLING=1 then obviously NS interrupts are routed to EL3 first, but the TSPD re-enables NS interrupts before handing over to the TSP to handle yielding calls, via a call to ehf_allow_ns_preemption.
Dan.