Re: [Xen-devel] [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 05/30/2012 10:17 AM, Konrad Rzeszutek Wilk wrote:
>> Yes, the following patch also fixed the crash for us:
>>
>> Implement rdmsr_regs and wrmsr_regs for Xen pvops.
> 
> That needs more data. Such as the reason for it, the crash
> tombstone, and an analysis of the bug.
> 
> But at this point I am not sure what we are going to do.
> 
> I think Peter leans towards ripping the .rdmsr_regs/wdmsr_regs
> function out altogether (so altering the amd_rdmsr... to use the
> .rdmsr/.wrdmsr). At which point I think this would all work
> just fine?
> 

No, you can't just do that.  Rip them out as in trap and emulate.

        -hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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