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Re: [Xen-devel] [PATCH V6 00/10] Support more than 8 vcpus on arm64 with GICv3

To: Chen Baozi <cbz@xxxxxxxxxx>
From: Ian Campbell <ian.campbell@xxxxxxxxxx>
Date: Fri, 5 Jun 2015 15:23:01 +0100
Cc: Julien Grall <julien.grall@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Chen Baozi <baozich@xxxxxxxxx>
Delivery-date: Fri, 05 Jun 2015 14:23:21 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Mon, 2015-06-01 at 20:56 +0800, Chen Baozi wrote:
> To create a guest up to 128 vCPUs, which is the maxium number that
> GIC-500

Is 128 also, as it happens, the limit before cpumask_t needs to be
dynamically allocate? (I've been reading xen/include/xen/cpumask.h)

I'm wondering how much I should concern myself with the uses of cpumasks
on the hot paths I'm seeing in here, e.g. sgi injection...

Ian.

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References:
- [Xen-devel] [PATCH V6 00/10] Support more than 8 vcpus on arm64 with GICv3
  - From: Chen Baozi

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