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Re: [Qemu-devel] [PATCH 12/29] kvm: remove special handling of DIRTY_MEM

From: Fam Zheng
Subject: Re: [Qemu-devel] [PATCH 12/29] kvm: remove special handling of DIRTY_MEMORY_MIGRATION in the dirty log mask
Date: Tue, 26 May 2015 16:56:23 +0800
User-agent: Mutt/1.5.23 (2014-03-12)

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 <address@hidden>
> Reported-by: Xiao Guangrong <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>

Reviewed-by: Fam Zheng <address@hidden>

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