WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-changelog

[Xen-changelog] [xen-unstable] vt-d: Disable VT-d table output on DMA pa

To: xen-changelog@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-changelog] [xen-unstable] vt-d: Disable VT-d table output on DMA page faults
From: Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date: Wed, 16 Jul 2008 07:30:09 -0700
Delivery-date: Wed, 16 Jul 2008 07:30:00 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-changelog-request@lists.xensource.com?subject=help>
List-id: BK change log <xen-changelog.lists.xensource.com>
List-post: <mailto:xen-changelog@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=unsubscribe>
Reply-to: xen-devel@xxxxxxxxxxxxxxxxxxx
Sender: xen-changelog-bounces@xxxxxxxxxxxxxxxxxxx
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1216203314 -3600
# Node ID cec304746b360d0fccb2ab3944787bfb912902cb
# Parent  649c975b72f00eff06659d683b9999dffec1063a
vt-d: Disable VT-d table output on DMA page faults

Printing VT-d tables requires map_domain_page() which can not be
called from interrupt context (on x86_32).

Signed-off-by: Espen Skoglund <espen.skoglund@xxxxxxxxxxxxx>
---
 xen/drivers/passthrough/vtd/iommu.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r 649c975b72f0 -r cec304746b36 xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c       Wed Jul 16 11:13:21 2008 +0100
+++ b/xen/drivers/passthrough/vtd/iommu.c       Wed Jul 16 11:15:14 2008 +0100
@@ -719,9 +719,11 @@ static int iommu_page_fault_do_one(struc
             PCI_SLOT(source_id & 0xFF), PCI_FUNC(source_id & 0xFF), addr,
             fault_reason, iommu->reg);
 
+#ifndef __i386__ /* map_domain_page() cannot be used in this context */
     if ( fault_reason < 0x20 )
         print_vtd_entries(iommu, (source_id >> 8),
                           (source_id & 0xff), (addr >> PAGE_SHIFT));
+#endif
 
     return 0;
 }

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-changelog] [xen-unstable] vt-d: Disable VT-d table output on DMA page faults, Xen patchbot-unstable <=