Unverified Commit 2c317c48 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!547 [OLK-5.10] cpufreq: ACPI: Add Zhaoxin/Centaur turbo boost control interface support 

Merge Pull Request from: @leoliu-oc 
 
Recent Zhaoxin/Centaur CPUs support X86_FEATURE_IDA and the turbo boost can be dynamically enabled or
disabled through MSR 0x1a0[38] in the same way as Intel. So add turbo boost control support for these CPUs too.

Issue
https://gitee.com/openeuler/kernel/issues/I6SKVN
 
 
Link:https://gitee.com/openeuler/kernel/pulls/547

 

Reviewed-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parents c40b6398 edbdfe64

drivers/cpufreq/acpi-cpufreq.c

+4 −0
Original line number Diff line number Diff line
@@ -78,6 +78,8 @@ static bool boost_state(unsigned int cpu) 


	switch (boot_cpu_data.x86_vendor) {

	case X86_VENDOR_INTEL:

	case X86_VENDOR_CENTAUR:

	case X86_VENDOR_ZHAOXIN:

		rdmsr_on_cpu(cpu, MSR_IA32_MISC_ENABLE, &lo, &hi);

		msr = lo | ((u64)hi << 32);

		return !(msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE);
@@ -97,6 +99,8 @@ static int boost_set_msr(bool enable) 


	switch (boot_cpu_data.x86_vendor) {

	case X86_VENDOR_INTEL:

	case X86_VENDOR_CENTAUR:

	case X86_VENDOR_ZHAOXIN:

		msr_addr = MSR_IA32_MISC_ENABLE;

		msr_mask = MSR_IA32_MISC_ENABLE_TURBO_DISABLE;

		break;