From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A266DC43387 for ; Tue, 15 Jan 2019 13:56:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47E0320868 for ; Tue, 15 Jan 2019 13:56:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="BtbUtqKp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730151AbfAON4p (ORCPT ); Tue, 15 Jan 2019 08:56:45 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:37674 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730061AbfAON4o (ORCPT ); Tue, 15 Jan 2019 08:56:44 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=MmEkTyogFwMsFqIrIZRoHcVG3q447p5uSVNXo6qK7Bc=; b=BtbUtqKpema7IuYlQpEvb39IH aBXKj3BvIvlBezKIjQ0PAluoHqtr7ZbfRy8L+GNThIqH+Arg67NKRrYsTuBkgG5xuHQx/wzFVDCoa oQcfdCpZlwihzC5n5faOB0d9i5fw18gbIARADRRvwZV7DMJEH1EXPhIM8mkY/F7ic7GeRNbp1L1b5 mgyPP48sUcgjCLyPFztG3bcWNF25fspxmkgfPvX7O2txjsu6la3pYb0AVAPwjfKro4A14SVdu/zYY pvoutuR8lL/wN1vh/k0Pl2XutwfAkyzZ3PvPfv8wickfpjodXmjqH0tkwZUI3HU3SE/YxdW2mle2u vcwTCwx+Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjPCp-00040y-Pk; Tue, 15 Jan 2019 13:56:39 +0000 Date: Tue, 15 Jan 2019 05:56:39 -0800 From: Christoph Hellwig To: Atish Patra Cc: linux-riscv@lists.infradead.org, Patrick =?iso-8859-1?Q?St=E4hlin?= , Albert Ou , Jason Cooper , Alan Kao , Dmitriy Cherkasov , Anup Patel , Daniel Lezcano , linux-kernel@vger.kernel.org, Michael Clark , Palmer Dabbelt , Andreas Schwab , Marc Zyngier , Thomas Gleixner , Zong Li Subject: Re: [PATCH v2 8/8] RISC-V: Assign hwcap only according to current cpu. Message-ID: <20190115135639.GH28946@infradead.org> References: <1546940318-9752-1-git-send-email-atish.patra@wdc.com> <1546940318-9752-9-git-send-email-atish.patra@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1546940318-9752-9-git-send-email-atish.patra@wdc.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 08, 2019 at 01:38:38AM -0800, Atish Patra wrote: > Currently, we set hwcap based on first valid cpu from > DT. This may not be correct always as that CPU might not > be current booting cpu. > > Set hwcap based on the current cpu instead of first > valid CPU from DT. This is generally the right thing to do. But can the kernel even cope with different hwcaps per hart? I know arm land and I think x86 as well don't, so we might want to add a sanity check that they match or reduce them to the common subset.