Re: [Xen-devel] Windows SMP

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

That looks like it could be a nice drop-in piece of code!

 -- Keir

On 30/12/2008 16:58, "Wei Huang" <wei.huang2@xxxxxxx> wrote:

> 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@xxxxxxxxxxxxxxxx>
>> 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
>> 
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
>> 
> 



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