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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 911E1C3F2D7 for ; Fri, 6 Mar 2020 00:27:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7155220705 for ; Fri, 6 Mar 2020 00:27:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727079AbgCFA1r (ORCPT ); Thu, 5 Mar 2020 19:27:47 -0500 Received: from ozlabs.org ([203.11.71.1]:60705 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727065AbgCFA1q (ORCPT ); Thu, 5 Mar 2020 19:27:46 -0500 Received: by ozlabs.org (Postfix, from userid 1034) id 48YT3N3R0Nz9sSm; Fri, 6 Mar 2020 11:27:43 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: e1347a020b81fe47c80cd277bfaa61295a9482a4 In-Reply-To: <12f4f4f0ff89aeab3b937fc96c84fb35e1b2517e.1580748445.git.christophe.leroy@c-s.fr> To: Christophe Leroy , Benjamin Herrenschmidt , Paul Mackerras From: Michael Ellerman Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc/32s: Slenderize _tlbia() for powerpc 603/603e Message-Id: <48YT3N3R0Nz9sSm@ozlabs.org> Date: Fri, 6 Mar 2020 11:27:43 +1100 (AEDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2020-02-03 at 16:47:37 UTC, Christophe Leroy wrote: > _tlbia() is a function used only on 603/603e core, ie on CPUs which > don't have a hash table. > > _tlbia() uses the tlbia macro which implements a loop of 1024 tlbie. > > On the 603/603e core, flushing the entire TLB requires no more than > 32 tlbie. > > Replace tlbia by a loop of 32 tlbie. > > Signed-off-by: Christophe Leroy Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/e1347a020b81fe47c80cd277bfaa61295a9482a4 cheers