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Re: [PULL 29/71] hw/arm/virt: Check CPU type in machine_run_board_init()


From: Peter Maydell
Subject: Re: [PULL 29/71] hw/arm/virt: Check CPU type in machine_run_board_init()
Date: Tue, 9 Jan 2024 14:33:41 +0000

On Fri, 5 Jan 2024 at 15:46, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>
> From: Gavin Shan <gshan@redhat.com>
>
> Set mc->valid_cpu_types so that the user specified CPU type can be
> validated in machine_run_board_init(). We needn't to do the check
> by ourselves.

Hi; after this change if you try to use the 'virt' board from
qemu-system-arm with an invalid CPU type you get an odd
error message full of "(null)"s:

$ ./build/x86/qemu-system-arm -machine virt -cpu cortex-a9
qemu-system-arm: Invalid CPU model: cortex-a9
The valid models are: cortex-a7, cortex-a15, (null), (null), (null),
(null), (null), (null), (null), (null), (null), (null), (null), max

This seems to be because we print a "(null)" for every 64-bit
only CPU in the list, instead of either ignoring them or not
compiling them into the list in the first place.

https://gitlab.com/qemu-project/qemu/-/issues/2084

thanks
-- PMM



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