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Message-ID: <20230131053427.cdpg5zaqyxf7ou2f@beas>
Date: Tue, 31 Jan 2023 05:34:27 +0000
From: Wyes Karny <wyes.karny@....com>
To: Tor Vic <torvic9@...lbox.org>
Cc: Rafael J Wysocki <rafael@...nel.org>,
Huang Rui <ray.huang@....com>,
Jonathan Corbet <corbet@....net>,
Viresh Kumar <viresh.kumar@...aro.org>,
Mario.Limonciello@....com, Perry.Yuan@....com,
Ananth Narayan <ananth.narayan@....com>,
gautham.shenoy@....com, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
Bagas Sanjaya <bagasdotme@...il.com>, santosh.shukla@....com,
Len Brown <lenb@...nel.org>,
Robert Moore <robert.moore@...el.com>,
Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH v3 0/6] amd_pstate: Add guided autonomous mode support
Hi Tor Vic,
On 24 Jan 20:40, Tor Vic wrote:
--------------------------------->8-----------------------------
>
> The "active" mode seems to be broken here on a Zen2 3900X running Linux 6.1.
> Frequency remains stuck at minimum which is +-500 MHz.
I've fixed this in v4.
>
> Some queries of the new /sys devices lead to I/O error:
>
> # LANG=C cat /sys/devices/system/cpu/cpufreq/policy0/amd_pstate_*
> 166
> cat:
> /sys/devices/system/cpu/cpufreq/policy0/amd_pstate_lowest_nonlinear_freq:
> Input/output error
> cat: /sys/devices/system/cpu/cpufreq/policy0/amd_pstate_max_freq:
> Input/output error
>
This issue I'm not able to reproduce. Is this issue seen with only EPP
patches also?
Could you please check if this issue still there with v4?
Thanks,
Wyes
> The "guided" mode seems to work fine with no stuck frequency, but also
> produces I/O error on some /sys files.
>
> I haven't tested "passive".
>
> Cheers,
>
> Tor Vic
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