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Re: [Xen-devel] [PATCH] libxc: Fix checks on grant notify arguments

To: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
From: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date: Thu, 1 Dec 2011 18:20:23 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, konrad.wilk@xxxxxxxxxx, Stefano.Stabellini@xxxxxxxxxxxxx, Ian.Campbell@xxxxxxxxxxxxx, Vasiliy Tolstov <v.tolstov@xxxxxxxxxxxxxxxx>, Anil Madhavapeddy <anil@xxxxxxxxxx>
Delivery-date: Thu, 01 Dec 2011 18:21:13 +0000
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Daniel De Graaf writes ("[Xen-devel] [PATCH] libxc: Fix checks on grant notify 
arguments"):
> The notify offset and event channels are both unsigned variables, so
> testing for >= 0 will not correctly detect the use of -1 to indicate
> the field is unused. Remove the useless comparison and replace with
> correct range checks or comparisons to -1.

Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

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