From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xensource.com>
Subject: Re: page_alloc query
Date: Wed, 07 Mar 2007 09:40:03 +0000
Message-ID: <C21438F3.ABE7%keir@xensource.com>
References: <45EE915A.76E4.0078.0@novell.com>
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To: Jan Beulich <jbeulich@novell.com>
Cc: xen-devel@lists.xensource.com, Ben Thomas <bthomas@virtualiron.com>
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On 7/3/07 09:18, "Jan Beulich" <jbeulich@novell.com> wrote:

>> And I really think using signed variables for array indices is odd - it
>> performs
>> worse on x86-64/ia64 at least (because of the extra sign extension, whereas
>> the zero extension is implied in most/some operations), and it certainly is
>> contrary to how arrays work (they don't normally have fields accessible with
>> negative indices).
> 
> e.g. by instead doing
> 
>         for ( zone = zone_hi + 1; zone-- > zone_lo; )
> 
> Jan

Hmmm... Yeah, okay.

 -- Keir