Re: [Xen-devel] [PATCH v2] x86/vPMU: constrain MSR_IA32_DS_AREA loads

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Saturday, December 19, 2015 12:52 AM
> 
> For one, loading the MSR with a possibly non-canonical address was
> possible since the verification is conditional, while the MSR load
> wasn't. And then for PV guests we need to further limit the range of
> valid addresses to exclude the hypervisor range.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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