Re: [Qemu-devel] [PATCH] i386: mark the 'INTEL_PT' CPUID bit as unmigratable

[Kang, Luwei]

> On 25/12/18 09:23, Kang, Luwei wrote:
> >> From: Qemu-devel
> >> [mailto:address@hidden On Behalf
> >> Of Paolo Bonzini
> >> Sent: Friday, December 21, 2018 8:44 PM
> >> To: address@hidden
> >> Cc: address@hidden; address@hidden
> >> Subject: [Qemu-devel] [PATCH] i386: mark the 'INTEL_PT' CPUID bit as
> >> unmigratable
> >>
> >> Marshaling of processor tracing MSRs is not yet implemented in QEMU, mark 
> >> the feature as unmigratable.
> >
> > Hi Paolo,
> >     I think Intel PT has supported live migration. I don't understand what 
> > you mean.
> >
> >     commit b77146e9a129bcdb60edc23639211679ae846a92
> >     Author: Chao Peng <address@hidden>
> >     Date:   Mon Mar 5 00:48:36 2018 +0800
> >     i386: Add support to get/set/migrate Intel Processor Trace feature
> 
> Indeed.  I had forgotten this patch because it was committed so long before 
> the kernel parts (which really should not happen, but Eduardo
> and I miscommunicated on it).  Can you check that it still works?

Yes, it is indeed so long. I will check if it still works.

Thanks,
Luwei Kang