Re: [Xen-devel] Xen HVM regression on certain Intel CPUs

[Stefan Bader <stefan.bader@xxxxxxxxxxxxx>]

On 28.03.2013 16:42, H. Peter Anvin wrote:
> On 03/28/2013 08:06 AM, Stefan Bader wrote:
>>
>> No you are completely right. The inverse boolean got me for good.
>> So to summarize:
>>
>> - smep=0 as hypervisor argument avoids the problem for all guests -
>> nosmep as hvm guest arguement avoids the problem for that guest -
>> /proc/cpuinfo correctly reflects whether smep has been masked off
>> or not
>>
> 
> Please try to patch Jan pointed to.

I did, but it did not work. Elaborating on it a bit more in the reply I wrote to
his mail. In short, I think the code that would clear smep is not reached.

-Stefan
> 
>       -hpa
> 
>

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