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=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, 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 AC56DC4320A for ; Fri, 27 Aug 2021 13:22:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 98026604AC for ; Fri, 27 Aug 2021 13:22:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245239AbhH0NXn (ORCPT ); Fri, 27 Aug 2021 09:23:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245321AbhH0NXZ (ORCPT ); Fri, 27 Aug 2021 09:23:25 -0400 Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 14CBAC0613CF for ; Fri, 27 Aug 2021 06:22:23 -0700 (PDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Gx0kN1kFpz9t5H; Fri, 27 Aug 2021 23:22:20 +1000 (AEST) From: Michael Ellerman To: Michael Ellerman , Christophe Leroy , Paul Mackerras , Benjamin Herrenschmidt Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org In-Reply-To: References: Subject: Re: [PATCH v3] powerpc/booke: Avoid link stack corruption in several places Message-Id: <163007015656.52768.14712592105092490367.b4-ty@ellerman.id.au> Date: Fri, 27 Aug 2021 23:15:56 +1000 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 24 Aug 2021 07:56:26 +0000 (UTC), Christophe Leroy wrote: > Use bcl 20,31,+4 instead of bl in order to preserve link stack. > > See commit c974809a26a1 ("powerpc/vdso: Avoid link stack corruption > in __get_datapage()") for details. > > > > [...] Applied to powerpc/next. [1/1] powerpc/booke: Avoid link stack corruption in several places https://git.kernel.org/powerpc/c/f5007dbf4da729baa850b33a64dc3cc53757bdf8 cheers