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From: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
To: Avi Kivity <avi@redhat.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>,
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        Rik van Riel <riel@redhat.com>, S390 <linux-s390@vger.kernel.org>,
        Carsten Otte <cotte@de.ibm.com>, KVM <kvm@vger.kernel.org>,
        chegu vinod <chegu_vinod@hp.com>,
        "Andrew M. Theurer" <habanero@linux.vnet.ibm.com>,
        LKML <linux-kernel@vger.kernel.org>, X86 <x86@kernel.org>,
        Gleb Natapov <gleb@redhat.com>, linux390@de.ibm.com,
        Srivatsa Vaddagiri <srivatsa.vaddagiri@gmail.com>,
        Joerg Roedel <joerg.roedel@amd.com>,
        Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>,
        Alexander Graf <agraf@suse.de>, Paul Mackerras <paulus@samba.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH RFC 0/2] kvm: Improving directed yield in PLE handler
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Date: Thu, 12 Jul 2012 16:08:21 +0530
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On Wed, 11 Jul 2012 14:04:03 +0300, Avi Kivity <avi@redhat.com> wrote:
> 
> > So this would probably improve guests that uses cpu_relax, for example
> > stop_machine_run. I have no measurements, though.
> 
> smp_call_function() too (though that can be converted to directed yield
> too).  It seems worthwhile.
> 
With 

https://lkml.org/lkml/2012/6/26/266 in tip:x86/mm

which now uses smp_call_function_many in native_flush_tlb_others. It
will help that too.

Nikunj