Re: [Xen-devel] [PATCH v4 12/16] x86/xen: enable Hygon support to Xen
From: Boris Ostrovsky
Date: Mon Aug 20 2018 - 21:49:46 EST
On 08/19/2018 12:13 PM, Pu Wen wrote:
> To make Xen works functionly on Hygon platforms, reuse AMD's Xen support
> code path for Hygon.
> There are six core performance events counters per thread, so there are
> six MSRs for these counters(0-5). Also there are four legacy PMC MSRs,
> they are alias of the counters(0-3).
> In this version of kernel Hygon use the lagacy and safe versions of MSR
> access. It works fine when VPMU enabled in Xen on Hygon platforms by
> testing with perf.
> Signed-off-by: Pu Wen <puwen@xxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>