Re: [Xen-devel] [PATCH 1/2] x86/ept: defer enabling of EPT A/D bit until PML get enabled.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.10.15 at 04:34, <kai.huang@xxxxxxxxxxxxxxx> wrote:
> Existing PML implementation turns on EPT A/D bit unconditionally if PML is
> supported by hardware. This works but enabling of EPT A/D bit can be 
> deferred
> until PML get enabled. There's no point in enabling the extra feature for 
> every
> domain when we're not meaning to use it (yet).
> 
> Also added ASSERT of domain having been paused to ept_flush_pml_buffers to 
> make
> it consistent with ept_enable{disable}_pml.
> 
> Sanity live migration and GUI display were tested on Broadwell Machine.
> 
> Signed-off-by: Kai Huang <kai.huang@xxxxxxxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


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