Re: [PATCH v12 06/18] xen/pvh: MMU changes for PVH (v2)
From: David Vrabel
Date: Thu Jan 02 2014 - 06:24:57 EST
On 01/01/14 04:35, Konrad Rzeszutek Wilk wrote:
> From: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
> .. which are surprinsingly small compared to the amount for PV code.
> PVH uses mostly native mmu ops, we leave the generic (native_*) for
> the majority and just overwrite the baremetal with the ones we need.
> We also optimize one - the TLB flush. The native operation would
> needlessly IPI offline VCPUs causing extra wakeups. Using the
> Xen one avoids that and lets the hypervisor determine which
> VCPU needs the TLB flush.
This TLB flush optimization should be a separate patch.
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