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Re: [Xen-devel] [PATCH v6 07/14] x86: dynamically get/set CBM for a domain

To: "Chao Peng" <chao.p.peng@xxxxxxxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Fri, 24 Apr 2015 16:27:13 +0100
Cc: wei.liu2@xxxxxxxxxx, Ian.Campbell@xxxxxxxxxx, stefano.stabellini@xxxxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, dario.faggioli@xxxxxxxxxx, Ian.Jackson@xxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxx, will.auld@xxxxxxxxx, keir@xxxxxxx, dgdegra@xxxxxxxxxxxxx
Delivery-date: Fri, 24 Apr 2015 15:27:15 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> On 23.04.15 at 11:55, <chao.p.peng@xxxxxxxxxxxxxxx> wrote:
> Changes in v5:
> * Add spin_lock to protect cbm_map.
> * Add spin_lock to read path aswell.

I don't think the second bullet point is true - there's only a single
spin_lock() invocation being added here afaics.

Jan


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References:
- [Xen-devel] [PATCH v6 00/14] enable Cache Allocation Technology (CAT) for VMs
  - From: Chao Peng
- [Xen-devel] [PATCH v6 07/14] x86: dynamically get/set CBM for a domain
  - From: Chao Peng

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