Re: [Xen-devel] [PATCH][SVM] Fix 32bit Windows guest VMs save/re

To:	Keir Fraser <keir@xxxxxxx>
Subject:	Re: [Xen-devel] [PATCH][SVM] Fix 32bit Windows guest VMs save/restore
From:	Wei Huang <wei.huang2@xxxxxxx>
Date:	Mon, 31 Jan 2011 15:43:10 -0600
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This is true. I thought about it. Some problematic code path can be"enter 32bit mode => execute sysenter => turn on long mode" (or viceversa). In this case, SYSENTER MSRs should be copied from VMCB to vcpufields. But current Xen doesn't do so.


-Wei

On 01/31/2011 03:17 PM, Keir Fraser wrote:

  suspect the current approach has
further bugs because I don't believe the canonical sysenter msr values are
correctly shuffled between the vmcb and vcpu structures




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