[Xen-changelog] [linux-2.6.18-xen] [IA64] Fix swiotlb_dma_supported

["Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1185390450 21600
# Node ID b3ac98591e60cdea898aa0357c8da1334b6e26c8
# Parent  b64323b3a96337535f16e69d17a46086d069d941
[IA64] Fix swiotlb_dma_supported

CD/DVD-ROM on recent Dom0 is not available.
After some investigation, IDE controller is disabled
by reason that io_tlb_end is out of bounds.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
---
 arch/ia64/xen/swiotlb.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -r b64323b3a963 -r b3ac98591e60 arch/ia64/xen/swiotlb.c
--- a/arch/ia64/xen/swiotlb.c   Thu Jul 19 16:02:02 2007 -0600
+++ b/arch/ia64/xen/swiotlb.c   Wed Jul 25 13:07:30 2007 -0600
@@ -882,7 +882,11 @@ int
 int
 swiotlb_dma_supported (struct device *hwdev, u64 mask)
 {
+#ifdef CONFIG_XEN
+       return (virt_to_bus(io_tlb_end - 1)) <= mask;
+#else
        return (virt_to_bus(io_tlb_end) - 1) <= mask;
+#endif
 }
 
 EXPORT_SYMBOL(swiotlb_init);

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