From cd23f02f166892603eb9f2d488152b975872b682 Mon Sep 17 00:00:00 2001
From: Adamos Ttofari <attofari@amazon.de>
Date: Fri, 12 Nov 2021 09:16:57 +0000
Subject: [PATCH] cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
References: bsc#1201228
Git-commit: cd23f02f166892603eb9f2d488152b975872b682
Patch-mainline: v5.16-rc3
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: Thomas Abraham <tabraham@suse.com>
---
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),
{}
};
--
2.35.3