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=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 A6A2FC433DF for ; Tue, 28 Jul 2020 03:39:51 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 30853206D4 for ; Tue, 28 Jul 2020 03:39:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="pjVPeiiB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 30853206D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4BG2VW14DKzDqlZ for ; Tue, 28 Jul 2020 13:39:47 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4BG1130JHGzDqt0 for ; Tue, 28 Jul 2020 12:32:39 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=pjVPeiiB; dkim-atps=neutral Received: by ozlabs.org (Postfix) id 4BG1123FZFz9sSn; Tue, 28 Jul 2020 12:32:38 +1000 (AEST) 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 4BG1115sGBz9sTj; Tue, 28 Jul 2020 12:32:37 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ellerman.id.au; s=201909; t=1595903558; bh=GVppKHacNBK9byV2AhBgk8LPoELuuI3KrLw/+QEzQ/Y=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=pjVPeiiBTIagXa4E93EO9ZTHN2JESxXsOXdz5cEZY3SxtPrEkItcko61k/i3vbklZ CawiMR+OssdGfPNCK+IbvIsAiMY4fr4Eet+dGsELz/2XviC4InQZlCn7rKEeH0FJE0 /kptzj1ZdRjUUSHI0cFYR8/1UqEmRiF8qboxXJVaLYKpcqIXcyOVF2D3guVk0S60md cjsMTtnvZuZ+rA5gUbJJ3V1bh2hFf+6iIMl0CoXmPmagfMU7Tkaf98lwV4DJ84SfNv jUeExm8DqOLXZbGLafozLXfJfaEAtm+phntYLJJscW6Hsmhl3qe3zvzjSonY3805ak vpFxI8xE5875A== From: Michael Ellerman To: Daniel Axtens , linuxppc-dev@ozlabs.org Subject: Re: [PATCH v2 4/5] powerpc/mm: Remove custom stack expansion checking In-Reply-To: <87tuxtrrvb.fsf@dja-thinkpad.axtens.net> References: <20200724092528.1578671-1-mpe@ellerman.id.au> <20200724092528.1578671-4-mpe@ellerman.id.au> <87tuxtrrvb.fsf@dja-thinkpad.axtens.net> Date: Tue, 28 Jul 2020 12:32:33 +1000 Message-ID: <87eeow74ji.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Daniel Axtens writes: > Hi Michael, > > I tested v1 of this. I ran the test from the bug with a range of stack > sizes, in a loop, for several hours and didn't see any crashes/signal > delivery failures. > > I retested v2 for a few minutes just to be sure, and I ran stress-ng's > stack, stackmmap and bad-altstack stressors to make sure no obvious > kernel bugs were exposed. Nothing crashed. > > All tests done on a P8 LE guest under KVM. > > On that basis: > > Tested-by: Daniel Axtens Thanks. Always nice to have someone review my patches! cheers