Re: [libvirt] [PATCH RESEND v1 1/2] i386: Add Intel Processor Trace feature support

2018-01-22 Thread Kang, Luwei
> > On 18/01/2018 14:24, Eduardo Habkost wrote: > > > However, if there's a simple way to make it possible to migrate > > > between hosts with different CPUID[14h] data, it would be even > > > better. With the current KVM intel-pt implementation, what happens > > > if the CPUID[14h] data seen by

Re: [libvirt] [PATCH RESEND v1 1/2] i386: Add Intel Processor Trace feature support

2018-01-22 Thread Kang, Luwei
> > On Thu, Jan 18, 2018 at 03:44:49PM +0100, Paolo Bonzini wrote: > >> On 18/01/2018 15:37, Eduardo Habkost wrote: > >>> On Thu, Jan 18, 2018 at 02:39:57PM +0100, Paolo Bonzini wrote: > On 18/01/2018 14:24, Eduardo Habkost wrote: > > However, if there's a simple way to make it possible

Re: [libvirt] [PATCH RESEND v1 1/2] i386: Add Intel Processor Trace feature support

2018-01-17 Thread Kang, Luwei
> > > > > > On Mon, Jan 15, 2018 at 12:04:55 -0200, Eduardo Habkost wrote: > > > > > > > CCing libvirt developers. > > > > > > ... > > > > > > > This case is slightly more problematic, however: the new > > > > > > > feature is actually migratable (under very controlled > > > > > > > circumstances)

Re: [libvirt] [PATCH RESEND v1 1/2] i386: Add Intel Processor Trace feature support

2018-01-17 Thread Kang, Luwei
> > > > On Mon, Jan 15, 2018 at 12:04:55 -0200, Eduardo Habkost wrote: > > > > > CCing libvirt developers. > > > > ... > > > > > This case is slightly more problematic, however: the new feature > > > > > is actually migratable (under very controlled circumstances) > > > > > because of patch 2/2,

Re: [libvirt] [PATCH RESEND v1 1/2] i386: Add Intel Processor Trace feature support

2018-01-16 Thread Kang, Luwei
> > On Mon, Jan 15, 2018 at 12:04:55 -0200, Eduardo Habkost wrote: > > > CCing libvirt developers. > > ... > > > This case is slightly more problematic, however: the new feature is > > > actually migratable (under very controlled circumstances) because of > > > patch 2/2, but it is not