Commit 65940a8a authored by LeoLiu-oc's avatar LeoLiu-oc
Browse files

cpufreq: acpi-cpufreq: Zhaoxin: fix incorrect max-freq issue 

zhaoxin inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/IBB6OU


CVE: NA

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

Workaround for incorrect max frequency calculation on Zhaoxin/Centaur CPUs.

Signed-off-by: default avatarLeoLiu-oc <leoliu-oc@zhaoxin.com>
parent 06ee47aa

drivers/cpufreq/acpi-cpufreq.c

+4 −0
Original line number Diff line number Diff line
@@ -650,6 +650,10 @@ static u64 get_max_boost_ratio(unsigned int cpu) 
	if (acpi_pstate_strict)

		return 0;



	if (boot_cpu_data.x86_vendor == X86_VENDOR_ZHAOXIN ||

	    boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR)

		return 0;



	ret = cppc_get_perf_caps(cpu, &perf_caps);

	if (ret) {

		pr_debug("CPU%d: Unable to get performance capabilities (%d)\n",