ACPI: acpi_pad: mark Zhaoxin CPUs NONSTOP TSC correctly

[PATCH] ACPI: acpi_pad: mark Zhaoxin CPUs NONSTOP TSC correctly

Posted by Tony W Wang-oc 2 years, 8 months ago

Zhaoxin CPUs support NONSTOP TSC feature, so do not mark these CPUs
TSC unstable when use the acpi_pad driver.

Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
---
 drivers/acpi/acpi_pad.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 02f1a1b1143c..7a453c5ff303 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -66,6 +66,7 @@ static void power_saving_mwait_init(void)
 	case X86_VENDOR_AMD:
 	case X86_VENDOR_INTEL:
 	case X86_VENDOR_ZHAOXIN:
+	case X86_VENDOR_CENTAUR:
 		/*
 		 * AMD Fam10h TSC will tick in all
 		 * C/P/S0/S1 states when this bit is set.
-- 
2.17.1

Re: [PATCH] ACPI: acpi_pad: mark Zhaoxin CPUs NONSTOP TSC correctly

Posted by Rafael J. Wysocki 2 years, 8 months ago

On Tue, Jun 6, 2023 at 11:56 AM Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> wrote:
>
> Zhaoxin CPUs support NONSTOP TSC feature, so do not mark these CPUs
> TSC unstable when use the acpi_pad driver.
>
> Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
> ---
>  drivers/acpi/acpi_pad.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
> index 02f1a1b1143c..7a453c5ff303 100644
> --- a/drivers/acpi/acpi_pad.c
> +++ b/drivers/acpi/acpi_pad.c
> @@ -66,6 +66,7 @@ static void power_saving_mwait_init(void)
>         case X86_VENDOR_AMD:
>         case X86_VENDOR_INTEL:
>         case X86_VENDOR_ZHAOXIN:
> +       case X86_VENDOR_CENTAUR:
>                 /*
>                  * AMD Fam10h TSC will tick in all
>                  * C/P/S0/S1 states when this bit is set.
> --

Applied as 6.5 material, thanks!