From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH v11 for-xen-4.5 19/20] x86/VPMU: NMI-based
 VPMU support
Date: Tue, 23 Sep 2014 15:18:13 -0400
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To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: kevin.tian@intel.com, keir@xen.org, jbeulich@suse.com, jun.nakajima@intel.com, andrew.cooper3@citrix.com, tim@xen.org, dietmar.hahn@ts.fujitsu.com, xen-devel@lists.xen.org, Aravind.Gopalakrishnan@amd.com, suravee.suthikulpanit@amd.com
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On 09/23/2014 02:52 PM, Konrad Rzeszutek Wilk wrote:
> On Mon, Sep 22, 2014 at 07:58:00PM -0400, Boris Ostrovsky wrote:
>> Add support for using NMIs as PMU interrupts.
> Could you explain what the benefits are vs using the regular vector?
>
> Any why one would wnat to use this?


To profile hypervisor code that is executed with interrupts disabled.


-boris