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Date: Tue, 26 May 2015 16:56:23 +0800
From: Fam Zheng <famz@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH 12/29] kvm: remove special handling of
 DIRTY_MEMORY_MIGRATION in the dirty log mask
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org, stefanha@redhat.com, mst@redhat.com

On Mon, 04/27 18:28, Paolo Bonzini wrote:
> One recent example is commit 4cc856f (kvm-all: Sync dirty-bitmap from
> kvm before kvm destroy the corresponding dirty_bitmap, 2015-04-02).
> Another performance problem is that KVM keeps tracking dirty pages
> after a failed live migration, which causes bad performance due to
> disallowing huge page mapping.
> 
> Thanks to the previous patch, KVM can now stop hooking into
> log_global_start/stop.  This simplifies the KVM code noticeably.
> 
> Reported-by: Wanpeng Li <wanpeng.li@linux.intel.com>
> Reported-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Reviewed-by: Fam Zheng <famz@redhat.com>