RE: [Xen-devel] [PATCH] pass-through: Fix I/O BAR mapping probblem

["Zhao, Yu" <yu.zhao@xxxxxxxxx>]

Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>

>-----Original Message-----
>From: Zhao, Yu
>Sent: Wednesday, August 06, 2008 5:24 PM
>To: Keir Fraser
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: [Xen-devel] [PATCH] pass-through: Fix I/O BAR mapping probblem
>
>Check BAR type indicator to avoid I/O BAR being mistaken as 64-bit memory BAR.
>
>hw/pass-through.c |    4 +++-
> 1 files changed, 3 insertions(+), 1 deletions(-)
>
>diff --git a/hw/pass-through.c b/hw/pass-through.c
>index 7b46234..6d5686f 100644
>--- a/hw/pass-through.c
>+++ b/hw/pass-through.c
>@@ -1511,7 +1511,9 @@ static int pt_bar_reg_parse(
>     /* check 64bit BAR */
>     index = pt_bar_offset_to_index(reg->offset);
>     if ((index > 0) && (index < PCI_ROM_SLOT) &&
>-        (d->config[bar_64] & PCI_BASE_ADDRESS_MEM_TYPE_64))
>+        ((d->config[bar_64] & (PCI_BASE_ADDRESS_SPACE |
>+                               PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
>+         (PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64)))
>     {
>         region = &ptdev->bases[index-1];
>         if (region->bar_flag != PT_BAR_FLAG_UPPER)

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