Re: [Xen-devel] VPMU interrupt unreliability

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 19.10.17 at 20:20, <xumengpanda@xxxxxxxxx> wrote:
> Is there any document about the possible attack via the vPMU? The
> document I found (such as [1] and XSA-163) just briefly say that the
> vPMU should be disabled due to security concern.

Besides the other responses you've already got, I also recall there
being at least some CPU models that would live lock upon the
debug store being placed into virtual space not mapped by present
pages.

Jan


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