[Devel] Re: [PATCH linux-cr] s390: save_access_regs for self-checkpoint

[Oren Laadan]

Applied

Serge E. Hallyn wrote:
> When doing a self-checkpoint, we have to get the access registers
> from hw.
> 
> Signed-off-by: Serge E. Hallyn <serue at us.ibm.com>
> ---
>  arch/s390/kernel/checkpoint.c |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/s390/kernel/checkpoint.c b/arch/s390/kernel/checkpoint.c
> index 03307e2..894bca3 100644
> --- a/arch/s390/kernel/checkpoint.c
> +++ b/arch/s390/kernel/checkpoint.c
> @@ -79,7 +79,11 @@ static void s390_copy_regs(int op, struct ckpt_hdr_cpu *h,
>  	}
>  
>  	CKPT_COPY_ARRAY(op, h->fprs, thr->fp_regs.fprs, NUM_FPRS);
> -	CKPT_COPY_ARRAY(op, h->acrs, thr->acrs, NUM_ACRS);
> +	if (op == CKPT_CPT && t == current) {
> +		save_access_regs(h->acrs);
> +	} else {
> +		CKPT_COPY_ARRAY(op, h->acrs, thr->acrs, NUM_ACRS);
> +	}
>  	CKPT_COPY_ARRAY(op, h->per_control_regs,
>  		      thr->per_info.control_regs.words.cr, NUM_CR_WORDS);
>  }
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