Commit 8b2c7888 authored by Giovanni Gherdovich's avatar Giovanni Gherdovich Committed by Zheng Zengkai
Browse files

cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode 

mainline inclusion
from mainline-v5.14-rc1
commit fbdc21e9
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QV7E


CVE: NA

----------------------

Users may disable HWP in firmware, in which case intel_pstate wouldn't load
unless the CPU model is explicitly supported.

Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
mode could only use the acpi_cpufreq frequency scaling driver.

See also commit d8de7a44 ("cpufreq: intel_pstate: Add Skylake servers
support").

Signed-off-by: default avatarGiovanni Gherdovich <ggherdovich@suse.cz>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: default avatarCheng Jian <cj.chengjian@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 9b1dbfef

drivers/cpufreq/intel_pstate.c

+1 −0
Original line number Diff line number Diff line
@@ -2100,6 +2100,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { 
	X86_MATCH(ATOM_GOLDMONT,	core_funcs),

	X86_MATCH(ATOM_GOLDMONT_PLUS,	core_funcs),

	X86_MATCH(SKYLAKE_X,		core_funcs),

	X86_MATCH(ICELAKE_X,		core_funcs),

	{}

};

MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);