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

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Yang Zhang <yang.z.zhang@xxxxxxxxx>
# Date 1342709162 -3600
# Node ID 75eb78d6cf545a79878e3cf42d0fdadf32c8d7ce
# Parent  8a4cda0bbdc2309c7f86445eaa14e4f75e9bd21a
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>
---


diff -r 8a4cda0bbdc2 -r 75eb78d6cf54 xen/drivers/passthrough/vtd/qinval.c
--- a/xen/drivers/passthrough/vtd/qinval.c      Thu Jul 19 15:45:22 2012 +0100
+++ b/xen/drivers/passthrough/vtd/qinval.c      Thu Jul 19 15:46:02 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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