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Re: [Qemu-devel] [PATCH 2/9] struct iovec is now universally available

From: Christoph Hellwig
Subject: Re: [Qemu-devel] [PATCH 2/9] struct iovec is now universally available
Date: Wed, 15 Apr 2009 19:27:43 +0200
User-agent: Mutt/1.3.28i

On Wed, Apr 15, 2009 at 06:25:09PM +0100, Mark McLoughlin wrote:
> On Wed, 2009-04-15 at 18:55 +0200, Christoph Hellwig wrote:
> > On Wed, Apr 15, 2009 at 05:29:22PM +0100, Mark McLoughlin wrote:
> > > struct iovec is now defined in qemu-common.h if needed, so we don't need
> > > the tap code to handle !defined(HAVE_IOVEC).
> > 
> > But is the writev system call also universally available?
> Fair point.
> I don't know of anywhere that qemu currently builds where writev() isn't
> available ... do you?
> >From looking at the history, I got the impression that HAVE_IOVEC was
> only for windows and that doesn't use this code.

Windows would be my first guess, but if that code isn't built for
windows the point is moot.

> Also, if it is something we want to handle, then we should do it by
> checking for writev() in configure and using HAVE_WRITEV


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