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[Xen-devel][Patch]No writeback for bt operation

  • To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx>
  • Date: Tue, 22 Apr 2008 09:28:06 +0800
  • Delivery-date: Mon, 21 Apr 2008 18:28:40 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcikGB3Be151LfsLQE6N9L8MSSWTxQ==
  • Thread-topic: [Xen-devel][Patch]No writeback for bt operation

Hi, Keir, 
    I find that Win2k3 guest will sometimes write back data to Read-only
registers, and it is caused by "bt" instruction. The attached tiny patch
is to disable writeback for bt instruction.

Signed-off-by: Xu Dongxiao <dongxiao.xu@xxxxxxxxx>

Best Regards,

Attachment: bt_no_writeback.patch
Description: bt_no_writeback.patch

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