Re: [kvm-unit-tests RFC PATCH 1/5] lib: arm: Print test exit status on exit if chr-testdev is not available

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On Fri, Jul 02, 2021 at 05:31:18PM +0100, Alexandru Elisei wrote:
> The arm64 tests can be run under kvmtool, which doesn't emulate a
> chr-testdev device. In preparation for adding run script support for
> kvmtool, print the test exit status so the scripts can pick it up and
> correctly mark the test as pass or fail.
> 
> Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
> ---
>  lib/chr-testdev.h |  1 +
>  lib/arm/io.c      | 10 +++++++++-
>  lib/chr-testdev.c |  5 +++++
>  3 files changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/chr-testdev.h b/lib/chr-testdev.h
> index ffd9a851aa9b..09b4b424670e 100644
> --- a/lib/chr-testdev.h
> +++ b/lib/chr-testdev.h
> @@ -11,4 +11,5 @@
>   */
>  extern void chr_testdev_init(void);
>  extern void chr_testdev_exit(int code);
> +extern bool chr_testdev_available(void);
>  #endif
> diff --git a/lib/arm/io.c b/lib/arm/io.c
> index 343e10822263..9e62b571a91b 100644
> --- a/lib/arm/io.c
> +++ b/lib/arm/io.c
> @@ -125,7 +125,15 @@ extern void halt(int code);
>  
>  void exit(int code)
>  {
> -	chr_testdev_exit(code);
> +	if (chr_testdev_available()) {
> +		chr_testdev_exit(code);

chr_testdev_exit() already has a 'if !vcon goto out' in it, so you can
just call it unconditionally. No need for chr_testdev_available().

> +	} else {
> +		/*
> +		 * Print the test return code in the format used by chr-testdev
> +		 * so the runner script can parse it.
> +		 */
> +		printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1);
> +	}
>  	psci_system_off();
>  	halt(code);
>  	__builtin_unreachable();
> diff --git a/lib/chr-testdev.c b/lib/chr-testdev.c
> index b3c641a833fe..301e73a6c064 100644
> --- a/lib/chr-testdev.c
> +++ b/lib/chr-testdev.c
> @@ -68,3 +68,8 @@ void chr_testdev_init(void)
>  	in_vq = vqs[0];
>  	out_vq = vqs[1];
>  }
> +
> +bool chr_testdev_available(void)
> +{
> +	return vcon != NULL;
> +}
> -- 
> 2.32.0
>

Thanks,
drew 




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