Hi Everyone, On 2023-06-08 08:34:48, Kautuk Consul wrote: > - Enable CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL as ppc64 is weakly > ordered. > - Enable CONFIG_NEED_KVM_DIRTY_RING_WITH_BITMAP because the > kvmppc_xive_native_set_attr is called in the context of an ioctl > syscall and will call kvmppc_xive_native_eq_sync for setting the > KVM_DEV_XIVE_EQ_SYNC attribute which will call mark_dirty_page() > when there isn't a running vcpu. Implemented the > kvm_arch_allow_write_without_running_vcpu to always return true > to allow mark_page_dirty_in_slot to mark the page dirty in the > memslot->dirty_bitmap in this case. > - Set KVM_DIRTY_LOG_PAGE_OFFSET for the ring buffer's physical page > offset. > - Implement the kvm_arch_mmu_enable_log_dirty_pt_masked function required > for the generic KVM code to call. > - Add a check to kvmppc_vcpu_run_hv for checking whether the dirty > ring is soft full. > - Implement the kvm_arch_flush_remote_tlbs_memslot function to support > the CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT config option. > > On testing with live migration it was found that there is around > 150-180 ms improvment in overall migration time with this patch. > > Signed-off-by: Kautuk Consul <kconsul@xxxxxxxxxxxxxxxxxx> Can someone review this ?
