linux-kernel - Re: [PATCH 1/1] iommu/amd: Fix PASID format in INVALIDATE_IOTLB

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140304141251.GB2799@8bytes.org>
Date:	Tue, 4 Mar 2014 15:12:51 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	suravee.suthikulpanit@....com
Cc:	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Jay Cornwall <jay.cornwall@....com>
Subject: Re: [PATCH 1/1] iommu/amd: Fix PASID format in
 INVALIDATE_IOTLB_PAGES command

On Wed, Feb 26, 2014 at 03:49:31PM -0600, suravee.suthikulpanit@....com wrote:
> From: Jay Cornwall <jay.cornwall@....com>
> 
> This patch corrects the PASID format in the INVALIDATE_IOTLB_PAGES
> command, which was caused by incorrect information in
> the AMD IOMMU Architectural Specification v2.01 document.
> 
>     Incorrect format:
>          cmd->data[0][16:23] = PASID[7:0]
>          cmd->data[1][16:27] = PASID[19:8]
> 
>      Correct format:
>          cmd->data[0][16:23] = PASID[15:8]
>          cmd->data[1][16:23] = PASID[7:0]
> 
> However, this does not affect the IOMMUv2 hardware implementation,
> and has been corrected since version 2.02 of the specification
> (available through AMD NDA).
> 
> Signed-off-by: Jay Cornwall <jay.cornwall@....com>
> Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@....com>

Applied, thanks.

Does this mean that PASIDs are only 16 bits wide now from the former 20
bits?


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/