Re: [Xen-devel] [PATCH V9 3/5] x86/hvm: pkeys, add xstate support for pkeys

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

> From: Huaitong Han
> Sent: Wednesday, February 03, 2016 10:12 PM
> 
> The XSAVE feature set can operate on PKRU state only if the feature set is
> enabled (CR4.OSXSAVE = 1) and has been configured to manage PKRU state
> (XCR0[9] = 1). And XCR0.PKRU is disabled on PV mode without PKU feature
> enabled.
> 
> Signed-off-by: Huaitong Han <huaitong.han@xxxxxxxxx>
> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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

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