linux-kernel - Re: [PATCH v7 1/6] cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS

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Message-ID: <ZieQMCzz+VUMcWya@amd.com>
Date: Tue, 23 Apr 2024 18:40:48 +0800
From: Huang Rui <ray.huang@....com>
To: "Yuan, Perry" <Perry.Yuan@....com>
Cc: "rafael.j.wysocki@...el.com" <rafael.j.wysocki@...el.com>,
	"Limonciello, Mario" <Mario.Limonciello@....com>,
	"viresh.kumar@...aro.org" <viresh.kumar@...aro.org>,
	"Shenoy, Gautham Ranjal" <gautham.shenoy@....com>,
	"Petkov, Borislav" <Borislav.Petkov@....com>,
	"Deucher, Alexander" <Alexander.Deucher@....com>,
	"Huang, Shimmer" <Shimmer.Huang@....com>,
	"oleksandr@...alenko.name" <oleksandr@...alenko.name>,
	"Du, Xiaojian" <Xiaojian.Du@....com>,
	"Meng, Li (Jassmine)" <Li.Meng@....com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 1/6] cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS_BIT into
 msr-index.h

On Tue, Apr 23, 2024 at 04:40:54PM +0800, Yuan, Perry wrote:
> There are some other drivers also need to use the
> MSR_K7_HWCR_CPB_DIS_BIT for CPB control bit, so it makes sense to move
> the definition to a common header file to allow other driver to use it.
> 
> No intentional functional impact.
> 
> Suggested-by: Gautham Ranjal Shenoy <gautham.shenoy@....com>
> Signed-off-by: Perry Yuan <perry.yuan@....com>
> Acked-by: Rafael J. Wysocki <rafael@...nel.org>

Acked-by: Huang Rui <ray.huang@....com>

> ---
>  arch/x86/include/asm/msr-index.h | 2 ++
>  drivers/cpufreq/acpi-cpufreq.c   | 2 --
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
> index e72c2b872957..8738a7b3917d 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -782,6 +782,8 @@
>  #define MSR_K7_HWCR_IRPERF_EN		BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT)
>  #define MSR_K7_FID_VID_CTL		0xc0010041
>  #define MSR_K7_FID_VID_STATUS		0xc0010042
> +#define MSR_K7_HWCR_CPB_DIS_BIT		25
> +#define MSR_K7_HWCR_CPB_DIS		BIT_ULL(MSR_K7_HWCR_CPB_DIS_BIT)
>  
>  /* K6 MSRs */
>  #define MSR_K6_WHCR			0xc0000082
> diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> index 37f1cdf46d29..2fc82831bddd 100644
> --- a/drivers/cpufreq/acpi-cpufreq.c
> +++ b/drivers/cpufreq/acpi-cpufreq.c
> @@ -50,8 +50,6 @@ enum {
>  #define AMD_MSR_RANGE		(0x7)
>  #define HYGON_MSR_RANGE		(0x7)
>  
> -#define MSR_K7_HWCR_CPB_DIS	(1ULL << 25)
> -
>  struct acpi_cpufreq_data {
>  	unsigned int resume;
>  	unsigned int cpu_feature;
> -- 
> 2.34.1
>