Hi Peter, On Tue, Mar 21, 2023 at 01:34:55PM +0000, Peter Maydell wrote: > > >>> + */ > > >>> + ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0)); > > >>> + uint8_t oas = FIELD_EX64(armcpu->isar.id_aa64mmfr0, ID_AA64MMFR0, > > >>> PARANGE); > > >> is this working in accelerated mode? > > > I didn't try with accel, I will give it a try, but from what I see, that > > > ARM_CPU() is used to get the CPU in traget/arm/kvm.c which is used from > > > accel/kvm-all.c, so it seems this would work for accelerated mode. > > > > yeah I ma not familiar enough with that code but it is worth to be checked. > > I'm a bit unsure about fishing around in the CPU ID registers for this. > That's not what you would do in real hardware, you'd just say "the > system is supposed to configure the CPU and the SMMU correctly". > > Also, there is no guarantee that CPU 0 is related to this SMMU in > particular. Sorry, missed this point in last email.
So, we leave it this way, or there is a better way to discover PARANGE? Thanks, Mostafa
