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=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED 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 C643BC468C6 for ; Thu, 19 Jul 2018 18:34:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E4DE2084C for ; Thu, 19 Jul 2018 18:34:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="Rd7c9BBg"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="mP1Mxdqv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E4DE2084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732176AbeGSTSW (ORCPT ); Thu, 19 Jul 2018 15:18:22 -0400 Received: from mail-yb0-f196.google.com ([209.85.213.196]:42106 "EHLO mail-yb0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732081AbeGSTSV (ORCPT ); Thu, 19 Jul 2018 15:18:21 -0400 Received: by mail-yb0-f196.google.com with SMTP id c10-v6so3649426ybf.9 for ; Thu, 19 Jul 2018 11:33:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=oolAZBVz/DmbPLXCAl1F8Ve8Xxy4I4jLDqU8aSJbBEg=; b=Rd7c9BBgQw/dyJSN4xep83b9UcuPZWHEwbhupBYi7mkE3hCdLqBXwBSb4fECx5atEE o2CwSHbQHzWuV7dyUT5baCl4gp/Bp/CkJw6PIpcFWKiCltY5bbY145vDdpC7Q9pkNfXe BYCmoqdQqwzeFMBsjmvtMqyyEl//PHuR36svVuXJFlcljc4yrP+B3nVvE8RU/wnNrLA0 QLGq+Bn9aTlAK2ZR64xIaf+Xt4iWN9COE9d/3BjDpt+36N3IhXkTlkTkb3y2qiho8x3e ILctYV7Iv32XeijXBQHoKdC2KRhWD/RGQ7nm0BDDIle6/Aacl+oR6SYdahb0VojuwE/P jH4Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=oolAZBVz/DmbPLXCAl1F8Ve8Xxy4I4jLDqU8aSJbBEg=; b=mP1MxdqvQLrDpp057Tp7hmcOCi85CsKV4fMFoW3LqAA9WWt9ZGC7cRerFf2GM7w4PC UPzLCYy9NNBQS7j0fDFYeYloEhVDJytoo41qGwN2vzuU5HqnU26M1Jy2NHk9v1PkUOPi cLV3utJyAJSEtAq1IehXgXN+ZYvgeqgxhoRB8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=oolAZBVz/DmbPLXCAl1F8Ve8Xxy4I4jLDqU8aSJbBEg=; b=exoTp9XgBu0MTQLd3N/FaxlSeET5CjoE2OadtEgxGKOkKz0k//LCXGdAenZmSBBXcA kZ6PdPmxxta2shmEY4grlNAZX6k2IReRQE45dVAFaPDihLGRqAL050+cvlAvWFwVHMdy IPPWNeyk8eo6xRW0j115S2fNt505zm2p7Q/NFgtMRY0/2vJr4Icvvxg7Key6sAEAE37N CxjprI/NThPnBOpaDzWhnROyd1Gy7KQAF6P2zPntITVsX2jv6gCvLwoIGsRbwvilGh2p 9UwvAsN0mUzAUqKkesFdvbCuEQKsF9PWPiGjzlZHIDgvR7AqdlXZPVGHUYmyOmQo1oZ1 EUIw== X-Gm-Message-State: AOUpUlGtgRZIpHX8tnxyyOiPNOMdEZPg4cWTPdbNzwbIGh8CDGkJn1ME UWvTXxQz1Ai5D4YF3jVeZxJJScinQXNNBHfEFOObhA== X-Google-Smtp-Source: AAOMgpdYAkzpfJVqYcnFVVxLmmXHDf3qhEnVsL3JjeXBJJZYebMlmNxdJxkXEZcQPyJWlAjRY5sHRdguW4gUMFuwFOE= X-Received: by 2002:a25:15ca:: with SMTP id 193-v6mr6269765ybv.484.1532025238241; Thu, 19 Jul 2018 11:33:58 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a25:6602:0:0:0:0:0 with HTTP; Thu, 19 Jul 2018 11:33:57 -0700 (PDT) In-Reply-To: <8736wfctdl.fsf@concordia.ellerman.id.au> References: <20180629185254.GA37557@beast> <8736wfctdl.fsf@concordia.ellerman.id.au> From: Kees Cook Date: Thu, 19 Jul 2018 11:33:57 -0700 X-Google-Sender-Auth: KPwKoTTitzzfB4kNshg9bqi5HM4 Message-ID: Subject: Re: [PATCH] powerpc/msi: Remove VLA usage To: Michael Ellerman Cc: Benjamin Herrenschmidt , Paul Mackerras , Andrew Morton , Randy Dunlap , Tyrel Datwyler , Rob Herring , Ingo Molnar , PowerPC , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 19, 2018 at 5:17 AM, Michael Ellerman wrote: > Kees Cook writes: > >> On Fri, Jun 29, 2018 at 11:52 AM, Kees Cook wrote: >>> In the quest to remove all stack VLA usage from the kernel[1], this >>> switches from an unchanging variable to a constant expression to eliminate >>> the VLA generation. >>> >>> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com >>> >>> Signed-off-by: Kees Cook >> >> Friendly ping! Michael, can you take this? > > Yep, sorry. I actually applied it weeks ago but hadn't pushed. No worries! Thanks! :) -Kees -- Kees Cook Pixel Security