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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 518AAECDFB8 for ; Mon, 23 Jul 2018 12:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1125A20880 for ; Mon, 23 Jul 2018 12:43:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1125A20880 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.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 S2388883AbeGWNoX (ORCPT ); Mon, 23 Jul 2018 09:44:23 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:47976 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388318AbeGWNoW (ORCPT ); Mon, 23 Jul 2018 09:44:22 -0400 Received: from localhost (LFbn-1-12238-233.w90-92.abo.wanadoo.fr [90.92.53.233]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 7F09BC7D; Mon, 23 Jul 2018 12:43:19 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dewet Thibaut , Alexander Sverdlin , Borislav Petkov , Thomas Gleixner , Tony Luck , linux-edac Subject: [PATCH 4.4 002/107] x86/MCE: Remove min interval polling limitation Date: Mon, 23 Jul 2018 14:40:56 +0200 Message-Id: <20180723122413.093529142@linuxfoundation.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180723122413.003644357@linuxfoundation.org> References: <20180723122413.003644357@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 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 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dewet Thibaut commit fbdb328c6bae0a7c78d75734a738b66b86dffc96 upstream. commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min interval limitation when setting the check interval for polled MCEs. However, the logic is that 0 disables polling for corrected MCEs, see Documentation/x86/x86_64/machinecheck. The limitation prevents disabling. Remove this limitation and allow the value 0 to disable polling again. Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes") Signed-off-by: Dewet Thibaut Signed-off-by: Alexander Sverdlin [ Massage commit message. ] Signed-off-by: Borislav Petkov Signed-off-by: Thomas Gleixner Cc: Tony Luck Cc: linux-edac Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/mcheck/mce.c | 3 --- 1 file changed, 3 deletions(-) --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -2294,9 +2294,6 @@ static ssize_t store_int_with_restart(st if (check_interval == old_check_interval) return ret; - if (check_interval < 1) - check_interval = 1; - mutex_lock(&mce_sysfs_mutex); mce_restart(); mutex_unlock(&mce_sysfs_mutex); From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [4.4,002/107] x86/MCE: Remove min interval polling limitation From: Greg Kroah-Hartman Message-Id: <20180723122413.093529142@linuxfoundation.org> Date: Mon, 23 Jul 2018 14:40:56 +0200 To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dewet Thibaut , Alexander Sverdlin , Borislav Petkov , Thomas Gleixner , Tony Luck , linux-edac List-ID: NC40LXN0YWJsZSByZXZpZXcgcGF0Y2guICBJZiBhbnlvbmUgaGFzIGFueSBvYmplY3Rpb25zLCBw bGVhc2UgbGV0IG1lIGtub3cuCgotLS0tLS0tLS0tLS0tLS0tLS0KCkZyb206IERld2V0IFRoaWJh dXQgPHRoaWJhdXQuZGV3ZXRAbm9raWEuY29tPgoKY29tbWl0IGZiZGIzMjhjNmJhZTBhN2M3OGQ3 NTczNGE3MzhiNjZiODZkZmZjOTYgdXBzdHJlYW0uCgpjb21taXQgYjNiN2M0Nzk1YyAoIng4Ni9N Q0U6IFNlcmlhbGl6ZSBzeXNmcyBjaGFuZ2VzIikgaW50cm9kdWNlZCBhIG1pbgppbnRlcnZhbCBs aW1pdGF0aW9uIHdoZW4gc2V0dGluZyB0aGUgY2hlY2sgaW50ZXJ2YWwgZm9yIHBvbGxlZCBNQ0Vz LgpIb3dldmVyLCB0aGUgbG9naWMgaXMgdGhhdCAwIGRpc2FibGVzIHBvbGxpbmcgZm9yIGNvcnJl Y3RlZCBNQ0VzLCBzZWUKRG9jdW1lbnRhdGlvbi94ODYveDg2XzY0L21hY2hpbmVjaGVjay4gVGhl IGxpbWl0YXRpb24gcHJldmVudHMgZGlzYWJsaW5nLgoKUmVtb3ZlIHRoaXMgbGltaXRhdGlvbiBh bmQgYWxsb3cgdGhlIHZhbHVlIDAgdG8gZGlzYWJsZSBwb2xsaW5nIGFnYWluLgoKRml4ZXM6IGIz YjdjNDc5NWMgKCJ4ODYvTUNFOiBTZXJpYWxpemUgc3lzZnMgY2hhbmdlcyIpClNpZ25lZC1vZmYt Ynk6IERld2V0IFRoaWJhdXQgPHRoaWJhdXQuZGV3ZXRAbm9raWEuY29tPgpTaWduZWQtb2ZmLWJ5 OiBBbGV4YW5kZXIgU3ZlcmRsaW4gPGFsZXhhbmRlci5zdmVyZGxpbkBub2tpYS5jb20+ClsgTWFz c2FnZSBjb21taXQgbWVzc2FnZS4gXQpTaWduZWQtb2ZmLWJ5OiBCb3Jpc2xhdiBQZXRrb3YgPGJw QHN1c2UuZGU+ClNpZ25lZC1vZmYtYnk6IFRob21hcyBHbGVpeG5lciA8dGdseEBsaW51dHJvbml4 LmRlPgpDYzogVG9ueSBMdWNrIDx0b255Lmx1Y2tAaW50ZWwuY29tPgpDYzogbGludXgtZWRhYyA8 bGludXgtZWRhY0B2Z2VyLmtlcm5lbC5vcmc+CkNjOiBzdGFibGVAdmdlci5rZXJuZWwub3JnCkxp bms6IGh0dHA6Ly9sa21sLmtlcm5lbC5vcmcvci8yMDE4MDcxNjA4NDkyNy4yNDg2OS0xLWFsZXhh bmRlci5zdmVyZGxpbkBub2tpYS5jb20KU2lnbmVkLW9mZi1ieTogR3JlZyBLcm9haC1IYXJ0bWFu IDxncmVna2hAbGludXhmb3VuZGF0aW9uLm9yZz4KLS0tCiBhcmNoL3g4Ni9rZXJuZWwvY3B1L21j aGVjay9tY2UuYyB8ICAgIDMgLS0tCiAxIGZpbGUgY2hhbmdlZCwgMyBkZWxldGlvbnMoLSkKCgoK LS0KVG8gdW5zdWJzY3JpYmUgZnJvbSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxpbmUgInVuc3Vic2Ny aWJlIGxpbnV4LWVkYWMiIGluCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9Admdl ci5rZXJuZWwub3JnCk1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5lbC5v cmcvbWFqb3Jkb21vLWluZm8uaHRtbAoKLS0tIGEvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2sv bWNlLmMKKysrIGIvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLmMKQEAgLTIyOTQsOSAr MjI5NCw2IEBAIHN0YXRpYyBzc2l6ZV90IHN0b3JlX2ludF93aXRoX3Jlc3RhcnQoc3QKIAlpZiAo Y2hlY2tfaW50ZXJ2YWwgPT0gb2xkX2NoZWNrX2ludGVydmFsKQogCQlyZXR1cm4gcmV0OwogCi0J aWYgKGNoZWNrX2ludGVydmFsIDwgMSkKLQkJY2hlY2tfaW50ZXJ2YWwgPSAxOwotCiAJbXV0ZXhf bG9jaygmbWNlX3N5c2ZzX211dGV4KTsKIAltY2VfcmVzdGFydCgpOwogCW11dGV4X3VubG9jaygm bWNlX3N5c2ZzX211dGV4KTsK