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Message-ID: <20211112091657.9848-1-attofari@amazon.de>
Date: Fri, 12 Nov 2021 09:16:57 +0000
From: Adamos Ttofari <attofari@...zon.de>
To: <attofari@...zon.de>
CC: Hendrik Borghorst <hborghor@...zon.de>,
David Woodhouse <dwmw@...zon.co.uk>,
Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
Len Brown <lenb@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Giovanni Gherdovich <ggherdovich@...e.cz>,
<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
Commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in
no-HWP mode") enabled the use of Intel P-State driver for Ice Lake servers.
But it doesn't cover the case when OS can't control P-States.
Therefore, for Ice Lake server, if MSR_MISC_PWR_MGMT bits 8 or 18 are
enabled, then the Intel P-State driver should exit as OS can't control
P-States.
Fixes: fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode")
Signed-off-by: Adamos Ttofari <attofari@...zon.de>
Cc: Hendrik Borghorst <hborghor@...zon.de>
Cc: David Woodhouse <dwmw@...zon.co.uk>
---
drivers/cpufreq/intel_pstate.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 815df3daae9d..1088ff350159 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2353,6 +2353,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
X86_MATCH(BROADWELL_D, core_funcs),
X86_MATCH(BROADWELL_X, core_funcs),
X86_MATCH(SKYLAKE_X, core_funcs),
+ X86_MATCH(ICELAKE_X, core_funcs),
{}
};
--
2.32.0
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879
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