From: "Christoph Egger" <Christoph.Egger@amd.com>
To: xen-devel@lists.xensource.com
Cc: Keir Fraser <keir@xensource.com>
Subject: Re: RFC: vaddr_t and vsize_t
Date: Thu, 18 Jan 2007 08:13:01 +0100 [thread overview]
Message-ID: <200701180813.01870.Christoph.Egger@amd.com> (raw)
In-Reply-To: <C1D404AE.7C3D%keir@xensource.com>
On Wednesday 17 January 2007 17:51, Keir Fraser wrote:
> On 17/1/07 16:21, "Christoph Egger" <Christoph.Egger@amd.com> wrote:
> > This stuff is about removing a place where programmers can make mistakes.
> > vaddr_t also avoids void * arithmetics. It should be possible then to use
> > -Wpointer-arith.
>
> A bunch of our void* arithmetic comes from files we keep in sync with
> Linux. So we'd really need Linux to clean this up before we use
> -Wpointer-arith, or we have to do extra porting effort to keep files in
> sync.
Well, actually I'm talking about the Xen-kernel and not about the
Linux-kernel.
> I suppose I don't mind vaddr_t being defined and people using it if they
> want to. At least it is probably clearer that translation to/from char* or
> long to do pointer arithmetic. However, I'm less sure about a wholesale
> conversion of Xen away from use of 'unsigned long'.
Ok. I will prepare a patch. Someone has to make the start. :-)
next prev parent reply other threads:[~2007-01-18 7:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-17 15:17 RFC: vaddr_t and vsize_t Christoph Egger
2007-01-17 15:49 ` Keir Fraser
2007-01-17 16:21 ` Christoph Egger
2007-01-17 16:51 ` Keir Fraser
2007-01-18 7:13 ` Christoph Egger [this message]
2007-01-18 7:31 ` Keir Fraser
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