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cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs

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[ Upstream commit cd23f02f166892603eb9f2d488152b975872b682 ]

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@amazon.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Adamos Ttofari 2021-11-12 09:16:57 +00:00 committed by Greg Kroah-Hartman
parent 57e9139645
commit d10ecfd951
1 changed files with 1 additions and 0 deletions
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drivers/cpufreq/intel_pstate.c
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@ -2255,6 +2255,7 @@ 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),
{}
};