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

[Wei Huang <wei.huang2@xxxxxxx>]

How does this one look? It should address your concern about duplicating 
data in both vcpu and vmcb. I have tested it with both 32bit and 64bit 
Windows successfully.
-Wei

=================
Fix 32bit guest VM save/restore issues associated with SYSENTER MSRs on 
AMD platforms.
This patch turn-on SYSENTER MSRs interception for 32bit guest VMs on AMD 
CPUs. With it, hvm_svm.guest_sysenter_xx fields always contain the 
canonical version of SYSENTER MSRs and are used in guest save/restore. 
The data fields in VMCB save area are updated as necessary.
Reported-by: James Harper <james.harper@xxxxxxxxxxxxxxxx>
Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
=================

Attachment: amd_fix_32bit_save_restore.txt
Description: amd_fix_32bit_save_restore.txt

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