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From: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
To: Wang Hongcheng <annie.wang-5C7GfCeVMHo@public.gmane.org>
Cc: Tony Li <tony.li-5C7GfCeVMHo@public.gmane.org>,
	Wan Zongshun <vincent.wan-5C7GfCeVMHo@public.gmane.org>,
	Vinod Koul <vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Greg Kroah-Hartman
	<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
	"Rafael J. Wysocki" <rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	Huang Rui <ray.huang-5C7GfCeVMHo@public.gmane.org>,
	linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Mika Westerberg
	<mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
	Ken Xue <ken.xue-5C7GfCeVMHo@public.gmane.org>
Subject: Re: [PATCH 8/9] Documentation: Add ivrs_acpihid kernel parameter description
Date: Fri, 4 Dec 2015 13:21:50 +0100	[thread overview]
Message-ID: <20151204122149.GD21177@pd.tnic> (raw)
In-Reply-To: <1449199466-6081-9-git-send-email-annie.wang-5C7GfCeVMHo@public.gmane.org>

On Fri, Dec 04, 2015 at 11:24:25AM +0800, Wang Hongcheng wrote:
> From: Wan Zongshun <Vincent.Wan-5C7GfCeVMHo@public.gmane.org>
> 
> Add ivrs_acpihid kernel parameter description,
> like ivrs_acpihid[00:14.5]=AMD0020:0.
> 
> Signed-off-by: Wan Zongshun <Vincent.Wan-5C7GfCeVMHo@public.gmane.org>
> ---
>  Documentation/kernel-parameters.txt | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> index 742f69d..5c364c6 100644
> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> @@ -1680,6 +1680,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
>  			PCI device 00:14.0 write the parameter as:
>  				ivrs_hpet[0]=00:14.0
>  
> +	ivrs_acpihid	[HW,X86_64]
> +			Provide an override to the ACPI-HID:UID<->DEVICE-ID
> +			mapping provided in the IVRS ACPI table. For
> +			example, to map UART-HID:UID AMD0020:0 to
> +			PCI device 00:14.5 write the parameter as:
> +				ivrs_acpihid[00:14.5]=AMD0020:0

What is that parameter needed for? Can't you deduce the mapping from the
hardware?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.

WARNING: multiple messages have this Message-ID (diff)
From: Borislav Petkov <bp@alien8.de>
To: Wang Hongcheng <annie.wang@amd.com>
Cc: Vinod Koul <vinod.koul@intel.com>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Joerg Roedel <joro@8bytes.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-serial@vger.kernel.org, dmaengine@vger.kernel.org,
	iommu@lists.linux-foundation.org, Huang Rui <ray.huang@amd.com>,
	Wan Zongshun <vincent.wan@amd.com>, Ken Xue <ken.xue@amd.com>,
	Tony Li <tony.li@amd.com>
Subject: Re: [PATCH 8/9] Documentation: Add ivrs_acpihid kernel parameter description
Date: Fri, 4 Dec 2015 13:21:50 +0100	[thread overview]
Message-ID: <20151204122149.GD21177@pd.tnic> (raw)
In-Reply-To: <1449199466-6081-9-git-send-email-annie.wang@amd.com>

On Fri, Dec 04, 2015 at 11:24:25AM +0800, Wang Hongcheng wrote:
> From: Wan Zongshun <Vincent.Wan@amd.com>
> 
> Add ivrs_acpihid kernel parameter description,
> like ivrs_acpihid[00:14.5]=AMD0020:0.
> 
> Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com>
> ---
>  Documentation/kernel-parameters.txt | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> index 742f69d..5c364c6 100644
> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> @@ -1680,6 +1680,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
>  			PCI device 00:14.0 write the parameter as:
>  				ivrs_hpet[0]=00:14.0
>  
> +	ivrs_acpihid	[HW,X86_64]
> +			Provide an override to the ACPI-HID:UID<->DEVICE-ID
> +			mapping provided in the IVRS ACPI table. For
> +			example, to map UART-HID:UID AMD0020:0 to
> +			PCI device 00:14.5 write the parameter as:
> +				ivrs_acpihid[00:14.5]=AMD0020:0

What is that parameter needed for? Can't you deduce the mapping from the
hardware?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.

  parent reply	other threads:[~2015-12-04 12:21 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-04  3:24 [PATCH 0/9] 8250: AMD Carrizo UART PL300 DMA enablement Wang Hongcheng
2015-12-04  3:24 ` Wang Hongcheng
2015-12-04  3:24 ` [PATCH 1/9] ACPI: Add support for AMBA bus type Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
2015-12-04  8:50   ` Mika Westerberg
2015-12-04  9:17     ` Huang Rui
2015-12-04  9:17       ` Huang Rui
2015-12-04  9:42       ` Hanjun Guo
2015-12-04  9:42         ` Hanjun Guo
2015-12-04  9:59         ` G Gregory
2015-12-04 10:20           ` Huang Rui
2015-12-04 10:20             ` Huang Rui
2015-12-04 10:23             ` G Gregory
2015-12-04  3:24 ` [PATCH 2/9] 8250/Kconfig: add config option CONFIG_SERIAL_8250_AMD Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
2015-12-04 11:11   ` Borislav Petkov
2015-12-04  3:24 ` [PATCH 3/9] ACPI: add struct acpi_amba_quirk for AMD pl330 specific device config Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
     [not found]   ` <1449199466-6081-4-git-send-email-annie.wang-5C7GfCeVMHo@public.gmane.org>
2015-12-04 12:56     ` kbuild test robot
2015-12-04 12:56       ` kbuild test robot
2015-12-04 13:16   ` Graeme Gregory
2015-12-11  6:57     ` Wang, Annie
     [not found]       ` <BLUPR12MB04339648B98F07977B6FA61F81EA0-7LeqcoF/hwrdEWIfrEWxYwdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2015-12-11  9:31         ` Vinod Koul
2015-12-11  9:31           ` Vinod Koul
2015-12-04  3:24 ` [PATCH 4/9] dmaengine: pl330: add new items for pl330 private data Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
2015-12-10  4:09   ` Vinod Koul
2015-12-10  6:38     ` Wang, Annie
     [not found]       ` <BLUPR12MB0433B81BB0AEB2D84505B55881E90-7LeqcoF/hwrdEWIfrEWxYwdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2015-12-11  9:29         ` Vinod Koul
2015-12-11  9:29           ` Vinod Koul
2015-12-11 13:56           ` Andy Shevchenko
2015-12-04  3:24 ` [PATCH 5/9] dmaengine: pl330: provide ACPI dmaengine interface Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
     [not found]   ` <1449199466-6081-6-git-send-email-annie.wang-5C7GfCeVMHo@public.gmane.org>
2015-12-13  2:21     ` Andy Shevchenko
2015-12-13  2:21       ` Andy Shevchenko
2015-12-04  3:24 ` [PATCH 6/9] dmaengine:pl330: set segment_boundary_mask = 0cffffffff Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
2015-12-04 14:59   ` Robin Murphy
2015-12-04  3:24 ` [PATCH 7/9] Serial:8250: New Port Type PORT_AMD_8250 Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
     [not found]   ` <1449199466-6081-8-git-send-email-annie.wang-5C7GfCeVMHo@public.gmane.org>
2015-12-13  2:30     ` Andy Shevchenko
2015-12-13  2:30       ` Andy Shevchenko
2015-12-04  3:24 ` [PATCH 8/9] Documentation: Add ivrs_acpihid kernel parameter description Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
     [not found]   ` <1449199466-6081-9-git-send-email-annie.wang-5C7GfCeVMHo@public.gmane.org>
2015-12-04 12:21     ` Borislav Petkov [this message]
2015-12-04 12:21       ` Borislav Petkov
2015-12-04 13:19       ` Wan, Vincent
2015-12-04 13:19         ` Wan, Vincent
2015-12-04 14:38         ` Borislav Petkov
2015-12-04  3:24 ` [PATCH 9/9] iommu/amd: Add ACPI HID named devices IOMMU driver support Wang Hongcheng
2015-12-04  3:24   ` Wang Hongcheng
2015-12-13  2:32 ` [PATCH 0/9] 8250: AMD Carrizo UART PL300 DMA enablement Andy Shevchenko

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