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Re: [Xen-devel] [PATCH] xen/arm: Update VTCR to use region size of 2^40 bytes instead of 2^39

To: Tim Deegan <tim@xxxxxxx>
From: Julien Grall <julien.grall@xxxxxxxxxx>
Date: Thu, 06 Jun 2013 14:51:46 +0100
Cc: patches@xxxxxxxxxx, stefano.stabellini@xxxxxxxxxx, ian.campbell@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxx
Delivery-date: Thu, 06 Jun 2013 13:52:07 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 06/06/2013 02:17 PM, Tim Deegan wrote:

> At 13:06 +0100 on 06 Jun (1370524015), Julien Grall wrote:
>> According to the ARM manual, T0SZ is a 4-bit signed integer.
>> The current value of T0SZ = b1000 which is equal to -7. This is result
> 
> Really?  By my count, 4-bit -7 is b1001 and b1000 is indeed -8.


Indeed :/. I don't know why I find this value by hand.

-- 
Julien


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References:
- [Xen-devel] [PATCH] xen/arm: Update VTCR to use region size of 2^40 bytes instead of 2^39
  - From: Julien Grall
- Re: [Xen-devel] [PATCH] xen/arm: Update VTCR to use region size of 2^40 bytes instead of 2^39
  - From: Tim Deegan

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