Re: Windows SMP

[Wei Huang <wei.huang2@amd.com>]

James,

Travis Betak released a Windows driver which patches Windows TPR 
accesses. You can find it from http://sourceforge.net/projects/amdvopt/. 
The code would be useful as a reference. src link:

svn co https://amdvopt.svn.sourceforge.net/svnroot/amdvopt amdvopt

Thanks,

-Wei


James Harper wrote:
>> On 29/12/2008 08:20, "James Harper" <james.harper@bendigoit.com.au>
> wrote:
>>>>  3. Run Citrix drivers which patch Windows to avoid TPR writes.
>>> Can you elaborate on that last point? Does that pass WHQL?
>> The WHQL tests are oblivious to it. It's just a patching of mmio
> writes to
>> the APIC TPR register.
>>
> 
> Looking at the way KVM does it, it appears to detect writes to the TPR
> register when they are trapped, and then give the DomU (or whatever KVM
> calls it) the address of the instruction so that the DomU driver can
> then patch it. Is that what Citrix is doing? Does the current xensource
> tree have such a mechanism in it?
> 
> Thanks
> 
> James
> 
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