Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751499AbdIAICt (ORCPT ); Fri, 1 Sep 2017 04:02:49 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:37544 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751022AbdIAICr (ORCPT ); Fri, 1 Sep 2017 04:02:47 -0400 X-Google-Smtp-Source: ADKCNb4IbHCKyu5orE34jeZWRXYgce4uecnT0G86oGmKR40CLuiIMt657YYmWQC9egna2CMWW6Mhsyzbyuc5lnvPP3Q= MIME-Version: 1.0 In-Reply-To: <45e5b91f645a51c3c7a7410f0c67676c5c8193e0.1504129273.git.shorne@gmail.com> References: <45e5b91f645a51c3c7a7410f0c67676c5c8193e0.1504129273.git.shorne@gmail.com> From: Geert Uytterhoeven Date: Fri, 1 Sep 2017 10:02:46 +0200 X-Google-Sender-Auth: KruG1b8qctIYpRtWbEFJ7_LCOuc Message-ID: Subject: Re: [OpenRISC] [PATCH 01/13] openrisc: use shadow registers to save regs on exception To: Stafford Horne Cc: LKML , Jonas Bonn , Masahiro Yamada , Openrisc , Andrew Morton Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1105 Lines: 31 On Wed, Aug 30, 2017 at 11:58 PM, Stafford Horne wrote: > --- a/arch/openrisc/Kconfig > +++ b/arch/openrisc/Kconfig > @@ -121,6 +121,16 @@ config OPENRISC_NO_SPR_SR_DSX > Say N here if you know that your OpenRISC processor has > SPR_SR_DSX bit implemented. Say Y if you are unsure. > > +config OPENRISC_HAVE_SHADOW_GPRS > + bool "Support for shadow gpr files" default y if SMP? > + help > + Say Y here if your OpenRISC processor features shadowed > + register files. They will in such case be used as a > + scratch reg storage on exception entry. > + > + On SMP systems, this feature is mandatory. > + On a unicore system it's safe to say N here if you are unsure. > + Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds