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. > > For a VM with 4 CPUs, this patch set can help to reduce the VM downtime > about 100us. > > Changes in v2: > * Simplify 'kvm_get_tsc()' function. > * Introduce a new function 'kvm_synchronize_all_tsc()' > > Liang Li (2): > kvmclock: add a new function to update env->tsc. > Revert "Introduce cpu_clean_all_dirty" > > cpus.c | 9 --------- > hw/i386/kvm/clock.c | 18 ++---------------- > include/sysemu/cpus.h | 1 - > include/sysemu/kvm.h | 8 -------- > kvm-all.c | 5 ----- > target-i386/kvm.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > target-i386/kvm_i386.h | 1 + > 7 files changed, 48 insertions(+), 39 deletions(-) >
Nice, I've applied these patches. Paolo
