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@amazon.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 815df3daae9df3710560b8ee7f11665204ea2830..1088ff350159b86f61741366cf2ebde7d00931df 100644 (file)
--- 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),
        {}
 };