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Message-ID: <alpine.DEB.2.02.1401031549520.8667@kaball.uk.xensource.com> Date: Fri, 3 Jan 2014 15:50:02 +0000 From: Stefano Stabellini <stefano.stabellini@...citrix.com> To: David Vrabel <david.vrabel@...rix.com> CC: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, <linux-kernel@...r.kernel.org>, <xen-devel@...ts.xenproject.org>, <boris.ostrovsky@...cle.com>, <stefano.stabellini@...citrix.com>, <mukesh.rathor@...cle.com> Subject: Re: [PATCH v12 06/18] xen/pvh: MMU changes for PVH (v2) On Thu, 2 Jan 2014, David Vrabel wrote: > On 01/01/14 04:35, Konrad Rzeszutek Wilk wrote: > > From: Mukesh Rathor <mukesh.rathor@...cle.com> > > > > .. 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. Right. Aside from this: Acked-by: Stefano Stabellini <stefano.stabellini@...citrix.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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