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From: Michael Ellerman <mpe@ellerman.id.au>
To: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>,
	linux-pm@vger.kernel.org
Cc: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>,
	viresh.kumar@linaro.org, rjw@rjwysocki.net,
	linux-kernel@vger.kernel.org, huntbag@linux.vnet.ibm.com,
	linuxppc-dev@lists.ozlabs.org, akshay.adiga@linux.vnet.ibm.com
Subject: Re: [PATCH] cpufreq: powernv: Define methods to parse positive & negative pstates
Date: Wed, 06 Dec 2017 21:54:27 +1100	[thread overview]
Message-ID: <87r2s8dt3w.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <1512017018-4857-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com>

Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> writes:

> From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
>
> Pstates are 8bit values but on POWER8 they are negative and on POWER9
> they are positive. This patch adds helper routines to differentiate
> the sign to read the correct pstate value.

This sounds like it could be a bad bug, but I can't really tell from the
change log. What is the actual impact of not having this patch?

Should it have a Fixes/Cc-stable tag?

cheers

  parent reply	other threads:[~2017-12-06 10:54 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-30  4:43 [PATCH] cpufreq: powernv: Define methods to parse positive & negative pstates Shilpasri G Bhat
2017-12-05  5:41 ` Viresh Kumar
2017-12-06 10:54 ` Michael Ellerman [this message]
2017-12-06 11:19   ` Gautham R Shenoy
2017-12-06 12:41     ` Michael Ellerman

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