From 0f84577f13e7cd17d3abcc69eb6efe7ce50c1506 Mon Sep 17 00:00:00 2001 From: leoliuoc Date: Thu, 2 Mar 2023 15:34:03 +0800 Subject: [PATCH] cpufreq: ACPI: Add Zhaoxin/Centaur turbo boost control interface support mainline inclusion commit d6f895965592d5cd2771860639219964df85d555 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I6J28W CVE: NA -------------------------------------------- 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. Signed-off-by: Tony W Wang-oc Signed-off-by: Rafael J. Wysocki Signed-off-by: leoliuoc --- drivers/cpufreq/acpi-cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index c72258a44ba4..1a1771bdb411 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -93,6 +93,8 @@ 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); @@ -112,6 +114,8 @@ 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; -- Gitee