On 3/3/21 7:54 PM, Richard Henderson wrote: > On 3/3/21 10:45 AM, Claudio Fontana wrote: >> It is a bit weird that qemu-system-aarch64 runs with a cortex-a15 >> model tbh, as cortex-a15 is not capable of aarch64. > > No, but qemu-system-aarch64 is capable of 32-bit emulation (because most > 64-bit cpus retain 32-bit mode). It takes no extra effort to run > cortex-a15 than it does a cortex-a57.
IIRC qemu-system-arm starts the aa64 cores in 32-bit mode, while qemu-system-aarch64 in 64-bit (this gave me trouble because the kernels for the raspi 64-bit SoCs are in 32-bit mode -- because the GPU starts them in this mode). > I have wondered if we should have just one qemu-system-arm that does it > all and drop the separate qemu-system-aarch64 -- or vice versa. But > we've had the separation around so long I'm sure someone would be confused. That would be great cleanup IMHO.
