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SubjectRe: [PATCH v8 04/22] s390/zcrypt: Integrate ap_asm.h into include/asm/ap.h.
On Mon, 13 Aug 2018 11:24:48 +0200
Harald Freudenberger <freude@linux.ibm.com> wrote:

> Here is now the add-on patch which changes the returncode for the
> ap_instructions_available() function.
>
> I talked with Heiko Carstens and this patch will go into the next pull
> request for the 4.19 kernel.

I was just about to ask :)

>
> -----------------------------------------------------------------------------------------
> From 9e050f843f3281da1f65292422e30f2dd1fd6d98 Mon Sep 17 00:00:00 2001
> From: Harald Freudenberger <freude@linux.ibm.com>
> Date: Thu, 9 Aug 2018 11:59:34 +0200
> Subject: [PATCH] s390/zcrypt: fix ap_instructions_available() returncodes
>
> During review of KVM patches it was complained that the
> ap_instructions_available() function returns 0 if AP
> instructions are available and -ENODEV if not. The function
> acts like a boolean function to check for AP instructions
> available and thus should return 0 on failure and != 0 on
> success. Changed to the suggested behaviour and adapted
> the one and only caller of this function which is the ap
> bus core code.
>
> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
> ---
>  arch/s390/include/asm/ap.h   | 10 +++++-----
>  drivers/s390/crypto/ap_bus.c |  2 +-
>  2 files changed, 6 insertions(+), 6 deletions(-)

Looks sane to me.

Acked-by: Cornelia Huck <cohuck@redhat.com>

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