Re: [PATCH 1/6] s390/alternative: use a copy of the facility bit mask

[Cornelia Huck]

On Wed, 17 Jan 2018 10:48:34 +0100
Martin Schwidefsky <schwidefsky@xxxxxxxxxx> wrote:

> To be able to switch off specific CPU alternatives with kernel parameters
> make a copy of the facility bit mask provided by STFLE and use the copy
> for the decision to apply an alternative.
> 
> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
> ---
>  arch/s390/include/asm/facility.h | 18 ++++++++++++++++++
>  arch/s390/include/asm/lowcore.h  |  3 ++-
>  arch/s390/kernel/alternative.c   |  3 ++-
>  arch/s390/kernel/early.c         |  3 +++
>  arch/s390/kernel/setup.c         |  4 +++-
>  arch/s390/kernel/smp.c           |  4 +++-
>  6 files changed, 31 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>