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From: Joerg Roedel <joro@8bytes.org>
To: suravee.suthikulpanit@amd.com
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V3] iommu/amd: Add logic to decode AMD IOMMU event flag
Date: Tue, 9 Apr 2013 11:41:32 +0200	[thread overview]
Message-ID: <20130409094132.GD6858@8bytes.org> (raw)
In-Reply-To: <1364947610-3327-1-git-send-email-suravee.suthikulpanit@amd.com>

On Tue, Apr 02, 2013 at 07:06:50PM -0500, Suthikulpanit, Suravee wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> 
> Add logic to decode AMD IOMMU event flag based on information from AMD IOMMU specification.
> This should simplify debugging IOMMU errors.  Also, dump DTE information in additional cases.
> 
> This is an example:
> AMD-Vi: Event logged [IO_PAGE_FAULT device=51:00.0 domain=0x0000 address=0x0000000000000000 flags=0x0fff]
> AMD-Vi: Flags details: Guest NX=1 User Intr Present Write No-Perm Rsrv-Bit Translation
> AMD-Vi: Type of error: (0x7) 
> AMD-Vi: (Note: Please refer to AMD IOMMU specification for details.)
> AMD-Vi: DTE[0]: 6000003fa75e2403
> AMD-Vi: DTE[1]: 0000000000000014
> AMD-Vi: DTE[2]: 2000003fa5e09011
> AMD-Vi: DTE[3]: 0000000000000000

This example should look like this instead:

AMD-Vi: Event logged [IO_PAGE_FAULT device=51:00.0 domain=0x0000 address=0x0 flags: G NX US I P Wr Rsvd Tr]

by default. When the user passes amd_iommu=verbose on the cmd-line then
you can print additional information like "type of error" or the dump
the DTE.


	Joerg



WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH V3] iommu/amd: Add logic to decode AMD IOMMU event flag
Date: Tue, 9 Apr 2013 11:41:32 +0200	[thread overview]
Message-ID: <20130409094132.GD6858@8bytes.org> (raw)
In-Reply-To: <1364947610-3327-1-git-send-email-suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org>

On Tue, Apr 02, 2013 at 07:06:50PM -0500, Suthikulpanit, Suravee wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org>
> 
> Add logic to decode AMD IOMMU event flag based on information from AMD IOMMU specification.
> This should simplify debugging IOMMU errors.  Also, dump DTE information in additional cases.
> 
> This is an example:
> AMD-Vi: Event logged [IO_PAGE_FAULT device=51:00.0 domain=0x0000 address=0x0000000000000000 flags=0x0fff]
> AMD-Vi: Flags details: Guest NX=1 User Intr Present Write No-Perm Rsrv-Bit Translation
> AMD-Vi: Type of error: (0x7) 
> AMD-Vi: (Note: Please refer to AMD IOMMU specification for details.)
> AMD-Vi: DTE[0]: 6000003fa75e2403
> AMD-Vi: DTE[1]: 0000000000000014
> AMD-Vi: DTE[2]: 2000003fa5e09011
> AMD-Vi: DTE[3]: 0000000000000000

This example should look like this instead:

AMD-Vi: Event logged [IO_PAGE_FAULT device=51:00.0 domain=0x0000 address=0x0 flags: G NX US I P Wr Rsvd Tr]

by default. When the user passes amd_iommu=verbose on the cmd-line then
you can print additional information like "type of error" or the dump
the DTE.


	Joerg

  parent reply	other threads:[~2013-04-09  9:41 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-03  0:06 [PATCH V3] iommu/amd: Add logic to decode AMD IOMMU event flag suravee.suthikulpanit
2013-04-03  0:06 ` suravee.suthikulpanit
2013-04-08 14:33 ` Suthikulpanit, Suravee
2013-04-08 14:50   ` Borislav Petkov
2013-04-08 14:50     ` Borislav Petkov
     [not found]     ` <20130408145003.GC4723-fF5Pk5pvG8Y@public.gmane.org>
2013-04-08 15:43       ` Suravee Suthikulanit
2013-04-08 18:48         ` Borislav Petkov
2013-04-08 18:48           ` Borislav Petkov
2013-04-09  9:41 ` Joerg Roedel [this message]
2013-04-09  9:41   ` Joerg Roedel
2013-04-09 15:12   ` Suravee Suthikulanit
2013-04-09 15:12     ` Suravee Suthikulanit
2013-04-09 19:52     ` Joerg Roedel
2013-04-09 19:52       ` Joerg Roedel

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