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Re: [Xen-devel] [PATCH] vmx: Fix single step on debugger

  • To: Kouya Shimura <kouya@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Fri, 19 Dec 2008 15:10:27 +0000
  • Cc:
  • Delivery-date: Fri, 19 Dec 2008 07:11:05 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Aclh6+yDlelSs2UvgUWquDMrtMeVag==
  • Thread-topic: [Xen-devel] [PATCH] vmx: Fix single step on debugger

On 19/12/2008 09:48, "Kouya Shimura" <kouya@xxxxxxxxxxxxxx> wrote:

> The hvm domain which is being debugged sometimes crashes with the
> following message:

The fix looks like a dubious hack to me. Wouldn't it at least be a bit
cleaner to mess with DR6.BS (the flag that's actually being checked by the
CPU) rather than messing with the DEBUGCTL.BTF control flag?

 -- Keir

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