Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751191AbaGCFVQ (ORCPT ); Thu, 3 Jul 2014 01:21:16 -0400 Received: from mail-qg0-f51.google.com ([209.85.192.51]:40548 "EHLO mail-qg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750817AbaGCFVP (ORCPT ); Thu, 3 Jul 2014 01:21:15 -0400 MIME-Version: 1.0 In-Reply-To: References: <1404278424-31176-1-git-send-email-zlim.lnx@gmail.com> Date: Wed, 2 Jul 2014 22:21:14 -0700 Message-ID: Subject: Re: [PATCH RFC] arm64: eBPF JIT compiler From: Z Lim To: Alexei Starovoitov Cc: Catalin Marinas , Will Deacon , "David S. Miller" , Daniel Borkmann , Chema Gonzalez , LKML , "linux-arm-kernel@lists.infradead.org" , Network Development Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 2, 2014 at 9:57 PM, Z Lim wrote: > On Wed, Jul 2, 2014 at 2:28 PM, Alexei Starovoitov wrote: >> On Tue, Jul 1, 2014 at 10:20 PM, Zi Shen Lim wrote: >> Do you really need 'jump by register' then? Regular 'bl' would be much faster. > > We'll need BLR to cover all cases. BL instruction can only address > +/-128MB (28-bits). > > BTW, what is the range of "imm" for JMP|CALL? I'm guessing since it's > s32, so +/-512MB? Oops... I meant: is it +/-2GB? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/