[Xen-changelog] [xen-4.0-testing] vt-d: fix wrong addr in IOTLB invalidation descriptor

[Xen patchbot-4.0-testing <patchbot@xxxxxxx>]

# HG changeset patch
# User Yang Zhang <yang.z.zhang@xxxxxxxxx>
# Date 1343651971 -3600
# Node ID 58516d1a539e166e20472ade13bdef6b4ed016fa
# Parent  79aaaf1e89ba5451374ab7dd3b7ca927282a4bd1
vt-d: fix wrong addr in IOTLB invalidation descriptor

According to vt-d specs, the addr in IOTLB invalidation descriptor
should be 4K page aligned.

Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
Committed-by: Keir Fraser <keir@xxxxxxx>
xen-unstable changeset:   25617:75eb78d6cf54
xen-unstable date:        Thu Jul 19 15:46:02 2012 +0100
---


diff -r 79aaaf1e89ba -r 58516d1a539e xen/drivers/passthrough/vtd/qinval.c
--- a/xen/drivers/passthrough/vtd/qinval.c      Mon Jul 30 13:34:57 2012 +0100
+++ b/xen/drivers/passthrough/vtd/qinval.c      Mon Jul 30 13:39:31 2012 +0100
@@ -140,7 +140,7 @@ static int gen_iotlb_inv_dsc(struct iomm
     qinval_entry->q.iotlb_inv_dsc.hi.am = am;
     qinval_entry->q.iotlb_inv_dsc.hi.ih = ih;
     qinval_entry->q.iotlb_inv_dsc.hi.res_1 = 0;
-    qinval_entry->q.iotlb_inv_dsc.hi.addr = addr;
+    qinval_entry->q.iotlb_inv_dsc.hi.addr = addr >> PAGE_SHIFT_4K;
 
     unmap_vtd_domain_page(qinval_entries);
     spin_unlock_irqrestore(&qi_ctrl->qinval_lock, flags);

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