On Thu, Nov 23, 2017 at 03:36:19PM +1100, Benjamin Herrenschmidt wrote: > This shaves off a bunch of cycles from the KVM exit path > and the XIVE related hypercall. Comment below... > diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S > index 83862fba8cfb..ade13f7a9077 100644 > --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S > +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S > @@ -81,6 +81,8 @@ _GLOBAL_TOC(kvmppc_hv_entry_trampoline) > RFI > > kvmppc_call_hv_entry: > + li r0,0 > + stb r0,HSTATE_EXIT_VIRT(r13) Don't we need to clear HSTATE_EXIT_VIRT(r13) similarly in the entry path for offline secondary CPU threads, i.e. somewhere around the kvm_secondary_got_guest label? Paul. -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
