From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH 2/2] KVM: Convert read-only users of vm_list to RCU
Date: Tue, 15 Feb 2011 10:32:02 -0200
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Cc: Avi Kivity <avi@redhat.com>, kvm <kvm@vger.kernel.org>,
	Zachary Amsden <zamsden@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
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On Tue, Feb 08, 2011 at 12:55:39PM +0100, Jan Kiszka wrote:
> Only for walking the list of VMs, we do not need to hold the preemption
> disabling kvm_lock. Convert stat services, the cpufreq callback and
> mmu_shrink to RCU. For the latter, special care is required to
> synchronize its list_move_tail with kvm_destroy_vm.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Jan,

What is the motivation for this change?