Hi Paolo, Stephen, On 9/8/15 9:35 AM, Stephen Rothwell wrote: > Hi all, > > After merging the kvm tree, today's linux-next build (powerpc > ppc64_defconfig) failed like this: > > arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'grow_halt_poll_ns': > arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1931:2: error: implicit declaration of function 'trace_kvm_halt_poll_ns_grow' [-Werror=implicit-function-declaration] > trace_kvm_halt_poll_ns_grow(vcpu->vcpu_id, val, old); > ^ > arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'shrink_halt_poll_ns': > arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1945:2: error: implicit declaration of function 'trace_kvm_halt_poll_ns_shrink' [-Werror=implicit-function-declaration] > trace_kvm_halt_poll_ns_shrink(vcpu->vcpu_id, val, old); > ^ > > Caused by commit > > 2cbd78244fb2 ("KVM: trace kvm_halt_poll_ns grow/shrink") > > I have reverted that commit for today. I miss place the trace codes under CONFIG_KVM_ASYNC_PF, the patch in the attachment rewrite the commit and fix it. Sorry for that. Regards, Wanpeng Li