From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: Disabling mergeable rx buffers for the guest
Date: Tue, 16 Jul 2013 08:41:45 +0200
Message-ID: <51E4EB29.4090600@redhat.com>
References: <58539BF287296F4CB5EC3FF6E0639E07FB101C@ILMB2.corp.radware.com> <51E4E41A.80905@redhat.com> <58539BF287296F4CB5EC3FF6E0639E07FB118C@ILMB2.corp.radware.com>
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Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
To: Naor Shlomo <NaorS@Radware.com>
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Il 16/07/2013 08:40, Naor Shlomo ha scritto:
> Hi Paolo and thanks for your quick reply,
> 
> I tried editing (virsh edit) the domain's XML and put the XML excerpt you gave me everywhere but with no success.
> The moment I exit the edit mode the text was gone (I guess it didn't pass some sort of sanity and that's why it was automatically erased).
> 
> What am I doing wrong?

My fault.  You need to change the <domain> opening tag to

<domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>

See http://libvirt.org/drvqemu.html#qemucommand for the docs.

Paolo