From: Avi Kivity <avi@qumranet.com>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: kvm-devel@lists.sf.net, Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [PATCH] Use QEMU functions to access guest memory for virtio
Date: Wed, 26 Mar 2008 16:32:50 +0200 [thread overview]
Message-ID: <47EA5E92.5080004@qumranet.com> (raw)
In-Reply-To: <47EA5C6F.6060201@us.ibm.com>
Anthony Liguori wrote:
>>
>> #define s_ld_u64(phys, field, type) \
>> ldq_phys(phys + offsetof(field, type))
>>
>>
>> And now we don't need individual accessors, or to encode the offsets
>> as magic numbers.
>
> It's a nice thought but it doesn't work out in practice because most
> of these accessor functions are accessing array elements. However, I
> thought about using offsetof() to eliminate the magic constants and I
> don't think that's a bad idea. In the very least, it makes the code
> more readable. It'll be part of the next series.
>
offsetof() should work for array members (i.e. offsetof(struct s, a[8])).
--
error compiling committee.c: too many arguments to function
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next prev parent reply other threads:[~2008-03-26 14:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-25 21:39 [PATCH] Use QEMU functions to access guest memory for virtio Anthony Liguori
2008-03-26 13:27 ` Avi Kivity
2008-03-26 14:23 ` Anthony Liguori
2008-03-26 14:32 ` Avi Kivity [this message]
2008-03-26 14:41 ` Anthony Liguori
2008-03-29 21:49 ` Anthony Liguori
2008-03-30 10:51 ` Avi Kivity
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