Re: [kvm-unit-tests PATCH 5/9] lib: s390x: uv: Add UVC_ERR_DEBUG switch

[Janosch Frank <frankja@linux.ibm.com>]

On 9/27/21 19:41, Thomas Huth wrote:
> On 22/09/2021 09.18, Janosch Frank wrote:
>> Every time something goes wrong in a way we don't expect, we need to
>> add debug prints to some UVC to get the unexpected return code.
>>
>> Let's just put the printing behind a macro so we can enable it if
>> needed via a simple switch.
>>
>> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
>> ---
>>    lib/s390x/asm/uv.h | 12 ++++++++++++
>>    1 file changed, 12 insertions(+)
>>
>> diff --git a/lib/s390x/asm/uv.h b/lib/s390x/asm/uv.h
>> index 2f099553..0e958ad7 100644
>> --- a/lib/s390x/asm/uv.h
>> +++ b/lib/s390x/asm/uv.h
>> @@ -12,6 +12,9 @@
>>    #ifndef _ASMS390X_UV_H_
>>    #define _ASMS390X_UV_H_
>>    
>> +/* Enables printing of command code and return codes for failed UVCs */
>> +#define UVC_ERR_DEBUG	0
> 
> Do we maybe want a "#ifndef UVC_ERR_DEBUG" in front of this, so that we
> could also set the macro to 1 from individual *.c files (or from the Makefile)?
> 
>    Thomas
> 

When testing it's the least amount of work to set this to 1 so I 
implemented it this way. If you think it's useful then I'll add the ifndef.