From mboxrd@z Thu Jan 1 00:00:00 1970 From: Herbert Xu Subject: Re: [PATCH] crypto: ccp: Fix DMA operations when IOMMU is enabled Date: Fri, 3 Feb 2017 18:21:28 +0800 Message-ID: <20170203102128.GE2632@gondor.apana.org.au> References: <20170127212845.27618.32169.stgit@taos> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-crypto@vger.kernel.org, thomas.lendacky@amd.com, davem@davemloft.net To: Gary R Hook Return-path: Received: from helcar.hengli.com.au ([209.40.204.226]:59643 "EHLO helcar.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752982AbdBCKVk (ORCPT ); Fri, 3 Feb 2017 05:21:40 -0500 Content-Disposition: inline In-Reply-To: <20170127212845.27618.32169.stgit@taos> Sender: linux-crypto-owner@vger.kernel.org List-ID: 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: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt