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Re: [PATCH 3/3] x86/cpufreq: Drop opencoded CPUID handling from powernow
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 15 Nov 2021 12:25:47 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 15 Nov 2021 11:26:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12.11.2021 19:28, Andrew Cooper wrote:
> Xen already collects CPUID.0x80000007.edx by default, meaning that we can
> refer to per-cpu data directly. This also avoids the need IPI the onlining
> CPU to identify whether Core Performance Boost is available.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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