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[Xen-devel] [Patch] Mask Expansion ROM Enable bit

from [Akio Takebe]

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Subject:	[Xen-devel] [Patch] Mask Expansion ROM Enable bit
From:	Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
Date:	Mon, 15 Jun 2009 21:09:07 +0900
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Hi,

I got the following unnecessary warning in qemu log,
when I created a guest with pass-through device.

Overlapped to device[00:05.0][Region:0][Address:f2060000h][Size:
00020000h]
pt_bar_mapping_one: Warning: ptdev[00:04.0][Region:6][Address:f2040001h]
[Size:00020000h] is overlapped.

It is a Expansion ROM Base Address Register,
so the last one bits doesn't mean the address space.
If we check overlap address space of all devices,
we shoud avoid the bit.
This patch masks non-address-bits of BAR.

Signed-off-by: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>

Best Regards,

Akio Takebe

mask_bar_addr_space.patch
Description: Binary data

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