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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9AB5C433EF for ; Tue, 28 Jun 2022 07:23:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242315AbiF1HXQ (ORCPT ); Tue, 28 Jun 2022 03:23:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241877AbiF1HXL (ORCPT ); Tue, 28 Jun 2022 03:23:11 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FA7B2DD6 for ; Tue, 28 Jun 2022 00:23:10 -0700 (PDT) Received: from [192.168.2.145] (109-252-118-164.nat.spd-mgts.ru [109.252.118.164]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madras.collabora.co.uk (Postfix) with ESMTPSA id 26D926601856; Tue, 28 Jun 2022 08:23:09 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1656400989; bh=tkMWwHg3XLqb6lHOLMAd96X4R33y38F3yPePIgGCoK4=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=DS4rM0xlJ/PsTDzSk5MFk9QRUuAF4NvI53elJoysMMoSbdStn25/OGcattMVg66ZY mj8oGKbiUSXJESayjg0iEwFwm6fb66nD4BD+Ea/Py3FBW0lpqMJQE19YjGK8MljcQs gzzxmPNjqAZvLepvbTbrYQnzInrAeZ6PJJM1HZSDhw39VHxxkUl7+XDaioBSsODIC6 yj25QOcHqBLjT+Oo2GxUFRb55Wa9nzo8/dxcSegJ5vsgGEJsbhAQgjUE/w6rJpCHWI sDNhPDdozSSc8wQXYu9F3jIJ4aNNZTiSwPzfQJVVEW92xI5eBPnVLWhldKRC83OiF1 aaAExN1t8Y9qg== Message-ID: <253e9ec1-bcd8-c790-95b8-afbcc21e7163@collabora.com> Date: Tue, 28 Jun 2022 10:23:06 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v1] ARM: Silence proc-v7-bugs.c spam about disabled Spectre workarounds Content-Language: en-US From: Dmitry Osipenko To: Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20220519161310.1489625-1-dmitry.osipenko@collabora.com> In-Reply-To: <20220519161310.1489625-1-dmitry.osipenko@collabora.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/19/22 19:13, Dmitry Osipenko wrote: > Print message about disabled Spectre workarounds only once to stop > endless spam into KSMG each time CPU goes out from idling state. > This spam makes system unusable with CONFIG_HARDEN_BRANCH_PREDICTOR=n > for those who don't care about security and wants maximum performance. > > Signed-off-by: Dmitry Osipenko > --- > arch/arm/mm/proc-v7-bugs.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c > index fb9f3eb6bf48..f9730eba0632 100644 > --- a/arch/arm/mm/proc-v7-bugs.c > +++ b/arch/arm/mm/proc-v7-bugs.c > @@ -108,8 +108,7 @@ static unsigned int spectre_v2_install_workaround(unsigned int method) > #else > static unsigned int spectre_v2_install_workaround(unsigned int method) > { > - pr_info("CPU%u: Spectre V2: workarounds disabled by configuration\n", > - smp_processor_id()); > + pr_info_once("Spectre V2: workarounds disabled by configuration\n"); > > return SPECTRE_VULNERABLE; > } Hello Russell, Could you please apply this patch? I tried to use yours patch tracker today and it doesn't allow me to recover my password (server error: MAIL FROM command failed Detail: Space shortage). Thanks! -- Best regards, Dmitry