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Re: [PATCH v5 1/2] x86/vtx: add LBR_SELECT to the list of LBR MSRs

To: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Thu, 15 Apr 2021 13:50:23 +0200
Cc: jun.nakajima@xxxxxxxxx, kevin.tian@xxxxxxxxx, andrew.cooper3@xxxxxxxxxx, roger.pau@xxxxxxxxxx, wl@xxxxxxx
Delivery-date: Thu, 15 Apr 2021 11:50:39 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 15.04.2021 12:04, Igor Druzhinin wrote:
> This MSR exists since Nehalem / Silvermont and is actively used by Linux,
> for instance, to improve sampling efficiency.
> 
> Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

References:
- [PATCH v5 1/2] x86/vtx: add LBR_SELECT to the list of LBR MSRs
  - From: Igor Druzhinin

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