linux-kernel - Re: [PATCH 10/11] acpi: bus: Set

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Date:   Sat, 20 Aug 2016 02:51:14 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     mingo@...hat.com, tglx@...utronix.de, hpa@...or.com,
        peterz@...radead.org, x86@...nel.org, bp@...e.de,
        sudeep.holla@....com, ak@...ux.intel.com,
        linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org,
        alexey.klimov@....com, viresh.kumar@...aro.org,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        lenb@...nel.org, tim.c.chen@...ux.intel.com,
        paul.gortmaker@...driver.com, jpoimboe@...hat.com,
        mcgrof@...nel.org, jgross@...e.com, robert.moore@...el.com,
        dvyukov@...gle.com, jeyu@...hat.com
Subject: Re: [PATCH 10/11] acpi: bus: Set _OSC for diverse core support

On Thursday, August 18, 2016 03:36:51 PM Srinivas Pandruvada wrote:
> Set the OSC_SB_CPC_DIVERSE_HIGH_SUPPORT (bit 12) to enable diverse
> core support.
> 
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> ---
>  drivers/acpi/bus.c   | 4 +++-
>  include/linux/acpi.h | 1 +
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
> index 61643a5..fbd3b7c 100644
> --- a/drivers/acpi/bus.c
> +++ b/drivers/acpi/bus.c
> @@ -336,7 +336,9 @@ static void acpi_bus_osc_support(void)
>  		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
>  	}
>  #endif
> -
> +#ifdef CONFIG_SCHED_ITMT
> +	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_DIVERSE_HIGH_SUPPORT;
> +#endif

	if (IS_ENABLED(CONFIG_SCHED_ITMT))
		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_DIVERSE_HIGH_SUPPORT;

pretty please.

>  	if (!ghes_disable)
>  		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
>  	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 4d8452c..17f6e08 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -460,6 +460,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
>  #define OSC_SB_CPCV2_SUPPORT			0x00000040
>  #define OSC_SB_PCLPI_SUPPORT			0x00000080
>  #define OSC_SB_OSLPI_SUPPORT			0x00000100
> +#define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT		0x00001000
>  
>  extern bool osc_sb_apei_support_acked;
>  extern bool osc_pc_lpi_support_confirmed;
> 

Thanks,
Rafael