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=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 BBC9FC282C3 for ; Thu, 24 Jan 2019 16:37:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 915F62184C for ; Thu, 24 Jan 2019 16:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728756AbfAXQhs (ORCPT ); Thu, 24 Jan 2019 11:37:48 -0500 Received: from foss.arm.com ([217.140.101.70]:60532 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727649AbfAXQhs (ORCPT ); Thu, 24 Jan 2019 11:37:48 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 33054A78; Thu, 24 Jan 2019 08:37:48 -0800 (PST) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.113]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 898543F237; Thu, 24 Jan 2019 08:37:46 -0800 (PST) Date: Thu, 24 Jan 2019 16:37:44 +0000 From: Catalin Marinas To: Shijith Thotton Cc: Will Deacon , chenwandun , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "Wangkefeng (Kevin)" , "anshuman.khandual@arm.com" , Ganapatrao Kulkarni , Jayachandran Chandrasekharan Nair Subject: Re: [Qestion] Softlockup when send IPI to other CPUs Message-ID: <20190124163743.GK253679@arrakis.emea.arm.com> References: <95C141B25E7AB14BA042DCCC556C0E6501620A47@dggeml529-mbx.china.huawei.com> <20190119235825.GG26876@brain-police> <20190121142127.GD29504@arrakis.emea.arm.com> <20190122054400.GB6445@brain-police> <20190123181530.GA234790@arrakis.emea.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Shijith, On Thu, Jan 24, 2019 at 07:00:42AM +0000, Shijith Thotton wrote: > On 01/23/2019 11:45 PM, Catalin Marinas wrote: > > diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c > > index 30695a868107..5c9073bace83 100644 > > --- a/arch/arm64/mm/flush.c > > +++ b/arch/arm64/mm/flush.c > > @@ -33,7 +33,11 @@ void sync_icache_aliases(void *kaddr, unsigned long len) > > __clean_dcache_area_pou(kaddr, len); > > __flush_icache_all(); > > } else { > > - flush_icache_range(addr, addr + len); > > + /* > > + * Don't issue kick_all_cpus_sync() after I-cache invalidation > > + * for user mappings. > > + */ > > + __flush_icache_range(addr, addr + len); > > } > > } > > We also faced similar issue with LTP test migrate_pages03 in past and this patch > fixes the issue. > > http://lists.infradead.org/pipermail/linux-arm-kernel/2019-January/623574.html Thanks for confirming. I presume I can add your tested-by. -- Catalin