On Thu, Jun 23, 2022 at 3:21 AM Tony W Wang-oc <TonyWWang-oc@xxxxxxxxxxx> wrote:
>
> 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 <TonyWWang-oc@xxxxxxxxxxx>
> ---
> 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 3d514b8..1bb2b90 100644
> --- a/drivers/cpufreq/acpi-cpufreq.c
> +++ b/drivers/cpufreq/acpi-cpufreq.c
> @@ -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;
> --
Applied as 5.20 material.
However, I had to manually fix up the formatting of the patch.
Can you please configure your e-mail client so that this is not
necessary in the future?
Thanks!
