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Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for I


From: Haozhong Zhang
Subject: Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE
Date: Mon, 20 Jun 2016 15:26:35 +0800
User-agent: Mutt/1.6.1-neo (2016-05-02)

On 06/20/16 08:58, Paolo Bonzini wrote:
> 
> 
> On 20/06/2016 04:11, Haozhong Zhang wrote:
> >>> > > Does that mean we can automatically enable LMCE for "-cpu host"?
> >> > 
> >> > We can automatically enable LMCE for "-cpu host" if and only if
> >> > the host kernel supports LMCE.
> >> >
> > According to our discussion for KVM Patch 3, we may have to disable it
> > by default by -cpu host, so that pc-2.7 will not require new kernels
> > unless LMCE is required explicitly by users.
> 
> -cpu host is a bit special, it requires the same processor and kernel on
> both sides of a migration.  So it can enable LMCE.
> 

OK, I'll make a separate patch in the next version to enable LMCE for
-cpu host.

Thanks,
Haozhong



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