From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cornelia Huck <cornelia.huck@de.ibm.com>
Subject: Re: [PATCH/RFC 7/9] KVM: s390: Optimize paths where get_vcpu_asce()
 is invoked
Date: Mon, 16 Mar 2015 14:13:28 +0100
Message-ID: <20150316141328.63fa5406.cornelia.huck@de.ibm.com>
References: <1426495905-17531-1-git-send-email-borntraeger@de.ibm.com>
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Cc: KVM <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Alexander Graf <agraf@suse.de>,
	Jens Freimann <jfrei@linux.vnet.ibm.com>,
	Alexander Yarygin <yarygin@linux.vnet.ibm.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>
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On Mon, 16 Mar 2015 09:51:43 +0100
Christian Borntraeger <borntraeger@de.ibm.com> wrote:

> From: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
> 
> During dynamic address translation the get_vcpu_asce()
> function can be invoked several times. It's ok for usual modes, but will
> be slow if CPUs are in AR mode. Let's call the get_vcpu_asce() once and
> pass the result to the called functions.
> 
> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
>  arch/s390/kvm/gaccess.c | 25 ++++++++++++-------------
>  1 file changed, 12 insertions(+), 13 deletions(-)

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>