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From: Herbert Xu <>
To: Gary R Hook <>
Subject: Re: [PATCH] crypto: ccp: Fix DMA operations when IOMMU is enabled
Date: Fri, 3 Feb 2017 18:21:28 +0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <20170127212845.27618.32169.stgit@taos>

On Fri, Jan 27, 2017 at 03:28:45PM -0600, Gary R Hook wrote:
> An I/O page fault occurs when the IOMMU is enabled on a
> system that supports the v5 CCP.  DMA operations use a
> Request ID value that does not match what is expected by
> the IOMMU, resulting in the I/O page fault.  Setting the
> Request ID value to 0 corrects this issue.
> Signed-off-by: Gary R Hook <>

Patch applied.  Thanks.
Email: Herbert Xu <>
Home Page:
PGP Key:

      parent reply	other threads:[~2017-02-03 10:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-27 21:28 Gary R Hook
2017-02-02 17:14 ` Gary R Hook
2017-02-03 10:21 ` Herbert Xu [this message]

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