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[Xen-devel] [PATCH] passthru: Fix pci bar remapping for passthru devices

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [PATCH] passthru: Fix pci bar remapping for passthru devices
From: Wei Wang2 <wei.wang2@xxxxxxx>
Date: Mon, 20 Jul 2009 16:03:56 +0200
Delivery-date: Mon, 20 Jul 2009 07:04:31 -0700
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When guest code tries to get the block size of mmio, it will write all "1"s 
into pci bar register and then qemu will return all "0"s to the don't care 
bits in the emulated bar register to indicate the block size to guest code. 
In this case, we should not create p2m mapping in  pt_bar_reg_write() and
pt_exp_rom_bar_reg_write(). Attached patch fixes this issue, additional 
comment can be found in the patch.


Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
 AMD GmbH, Germany
 Operating System Research Center
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 Advanced Micro Devices GmbH
 Karl-Hammerschmidt-Str. 34
 85609 Dornach b. München
 Geschäftsführer: Jochen Polster, Thomas M. McCoy, Giuliano Meroni
 Sitz: Dornach, Gemeinde Aschheim, Landkreis München
 Registergericht München, HRB Nr. 43632

Attachment: mmio.patch
Description: Text Data

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