Re: [kvm-unit-tests PATCH v2 1/6] s390x: Use interrupts in SCLP and add locking

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On 05/09/2019 12.39, Janosch Frank wrote:
> We need to properly implement interrupt handling for SCLP, because on
> z/VM and LPAR SCLP calls are not synchronous!
> 
> Also with smp CPUs have to compete for sclp. Let's add some locking,
> so they execute sclp calls in an orderly fashion and don't compete for
> the data buffer.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
>  lib/s390x/asm/interrupt.h |  2 ++
>  lib/s390x/interrupt.c     | 12 +++++++--
>  lib/s390x/sclp-console.c  |  2 ++
>  lib/s390x/sclp.c          | 55 +++++++++++++++++++++++++++++++++++++--
>  lib/s390x/sclp.h          |  3 +++
>  5 files changed, 70 insertions(+), 4 deletions(-)

Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>



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