Re: [PATCH v2 05/17] clocksource/hyperv: use MSR-based access if running as root

From: Daniel Lezcano
Date: Thu Nov 12 2020 - 06:42:14 EST


On 12/11/2020 12:24, Wei Liu wrote:
> On Thu, Nov 12, 2020 at 10:56:17AM +0100, Daniel Lezcano wrote:
>> On 05/11/2020 17:58, Wei Liu wrote:
>>> Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx>

Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

>>> ---
>>
>> I would like to apply this patch but the changelog is too short (one line).
>>
>> Please add a small paragraph (no need to resend just answer here, I will
>> amend the log myself.
>
> Please don't apply this to your tree. It is dependent on a previous
> patch. I expect this series to go through the hyperv tree.
>
> I will add in this small paragraph in a later version:
>
> When Linux runs as the root partition, the setup required for TSC page
> is different. Luckily Linux also has access to the MSR based
> clocksource. We can just disable the TSC page clocksource if Linux is
> the root partition.
>
> If you're happy with the description, I would love to have an ack from
> you. I will funnel the patch via the hyperv tree.
>
> Wei.
>


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