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From: Eric Blake <eblake@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>, qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, patches@linaro.org
Subject: Re: [Qemu-devel] [PATCH] nbd: Don't use *_to_cpup() functions
Date: Fri, 10 Jun 2016 09:04:37 -0600	[thread overview]
Message-ID: <575AD705.2010901@redhat.com> (raw)
In-Reply-To: <1465570836-22211-1-git-send-email-peter.maydell@linaro.org>

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On 06/10/2016 09:00 AM, Peter Maydell wrote:
> The *_to_cpup() functions are not very useful, as they simply do
> a pointer dereference and then a *_to_cpu(). Instead use either:
>  * ld*_*_p(), if the data is at an address that might not be
>    correctly aligned for the load
>  * a local dereference and *_to_cpu(), if the pointer is
>    the correct type and known to be correctly aligned
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> The motivation is to be able to drop *_to_cpup() entirely;
> we don't have many places that use it.
> ---
>  nbd/client.c |  8 ++++----
>  nbd/server.c | 10 +++++-----
>  qemu-nbd.c   |  4 ++--
>  3 files changed, 11 insertions(+), 11 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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  reply	other threads:[~2016-06-10 15:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-10 15:00 [Qemu-devel] [PATCH] nbd: Don't use *_to_cpup() functions Peter Maydell
2016-06-10 15:04 ` Eric Blake [this message]
2016-06-13  9:34 ` Paolo Bonzini

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