Re: [kvm-unit-tests PATCH 1/8] s390x: css: Skip if we're not run by qemu

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On Tue,  5 Apr 2022 07:52:18 +0000
Janosch Frank <frankja@xxxxxxxxxxxxx> wrote:

> There's no guarantee that we even find a device at the address we're
> testing for if we're not running under QEMU.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
>  s390x/css.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/s390x/css.c b/s390x/css.c
> index a333e55a..52d35f49 100644
> --- a/s390x/css.c
> +++ b/s390x/css.c
> @@ -15,6 +15,7 @@
>  #include <interrupt.h>
>  #include <asm/arch_def.h>
>  #include <alloc_page.h>
> +#include <hardware.h>
>  
>  #include <malloc_io.h>
>  #include <css.h>
> @@ -641,6 +642,12 @@ int main(int argc, char *argv[])
>  {
>  	int i;
>  
> +	/* There's no guarantee where our devices are without qemu */
> +	if (detect_host() != HOST_IS_KVM && detect_host() != HOST_IS_TCG) {

you could also do !host_is_kvm() && !host_is_tcg() , I think it's more
readable, but I do not have strong opinions regarding that

> +		report_skip("Not running under QEMU");
> +		goto done;
> +	}
> +
>  	report_prefix_push("Channel Subsystem");

the prefix push should probably go before the if

>  	enable_io_isc(0x80 >> IO_SCH_ISC);
>  	for (i = 0; tests[i].name; i++) {
> @@ -648,7 +655,8 @@ int main(int argc, char *argv[])
>  		tests[i].func();
>  		report_prefix_pop();
>  	}
> -	report_prefix_pop();
>  
> +done:
> +	report_prefix_pop();
>  	return report_summary();
>  }




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