Re: [Qemu-devel] [v2 0/2] Optimize the env->tsc update operation

2015-11-05 Thread Paolo Bonzini
On 05/11/2015 04:51, Liang Li wrote: > This patch set aims for reducing the live migration downtime. It > updates the env->tsc when stopping kvmclock with a new function. > Rather than using 'cpu_synchronize_all_states()', which updates the > whole CPU context just for updating the env->tsc. > >

[Qemu-devel] [v2 0/2] Optimize the env->tsc update operation

2015-11-04 Thread Liang Li
This patch set aims for reducing the live migration downtime. It updates the env->tsc when stopping kvmclock with a new function. Rather than using 'cpu_synchronize_all_states()', which updates the whole CPU context just for updating the env->tsc. For a VM with 4 CPUs, this patch set can help to r