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Re: [Xen-devel] [PATCH v5 08/21] x86/cpu: Sysctl and common infrastructure for levelling context switching

On Thu, Apr 07, 2016 at 12:57:13PM +0100, Andrew Cooper wrote:
> A toolstack needs to know how much control Xen has over the visible cpuid
> values in PV guests.  Provide an explicit mechanism to query what Xen is
> capable of.
> This interface will currently report no capabilities.  This change is
> scaffolding for future patches, which will introduce detection and switching
> logic, after which the interface will report hardware capabilities correctly.
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Acked-by: Jan Beulich <JBeulich@xxxxxxxx>

Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

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