linux-kernel - Re: [PATCH v2 1/2] KVM: s390: Improve determination of sizes in kvm_s390_import_bp

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Date:   Thu, 25 Aug 2016 18:10:09 +0200
From:   Cornelia Huck <cornelia.huck@...ibm.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     kvm@...r.kernel.org, linux-s390@...r.kernel.org,
        Christian Bornträger <borntraeger@...ibm.com>,
        David Hildenbrand <dahi@...ux.vnet.ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>,
        Walter Harms <wharms@....de>
Subject: Re: [PATCH v2 1/2] KVM: s390: Improve determination of sizes in
 kvm_s390_import_bp_data()

On Wed, 24 Aug 2016 20:36:26 +0200
SF Markus Elfring <elfring@...rs.sourceforge.net> wrote:

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Wed, 24 Aug 2016 19:45:23 +0200
> 
> * A multiplication for the size determination of a memory allocation
>   indicated that an array data structure should be processed.
>   Thus reuse the corresponding function "kmalloc_array".
> 
>   Suggested-by: Paolo Bonzini <pbonzini@...hat.com>
> 
>   This issue was detected also by using the Coccinelle software.

Do you have the scripts you use published somewhere?

> 
> * Replace the specification of data structures by pointer dereferences
>   to make the corresponding size determination a bit safer according to
>   the Linux coding style convention.
> 
> * Delete the local variable "size" which became unnecessary with
>   this refactoring.

I think your description is a bit on the verbose side, but not enough
to gripe more.

> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
> 
> v2: Rebased on source files from "Linux next-20160824".
>     Advices were integrated from source code review.
> 
>  arch/s390/kvm/guestdbg.c | 25 +++++++++++++++----------
>  1 file changed, 15 insertions(+), 10 deletions(-)

Acked-by: Cornelia Huck <cornelia.huck@...ibm.com>