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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 E1731C3A5A2 for ; Mon, 19 Aug 2019 14:46:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC3712070D for ; Mon, 19 Aug 2019 14:46:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="PDgOXA3a" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726742AbfHSOqc (ORCPT ); Mon, 19 Aug 2019 10:46:32 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:41244 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725536AbfHSOqb (ORCPT ); Mon, 19 Aug 2019 10:46:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=JiSnL2BNgZVd2k2mhKTmScy1iLsHV0f5TZ+rXL+j1I4=; b=PDgOXA3ahlIZhW/8CEFTR1Ri2 qBKMcENjyf9A3wcKb0aH56IzwBdOdTESbV6jHndUPfsbVJjb+weIslKTgzqin4VIFLnUY1qlHjtaG KPy83R0hstXbGdf+LxJqV9GGyCR3Sl8kt804/G9zVkSKe5ok9YTw9veklSNyyl5jqyRseoMPr4MUf RGBAL+IbNf2Y6HhvrCmhI2C/ZJHtQyLRLkmpCgGj/R7HZFCqUkb2QVwEPXy1HW4eBtLSxyhEPnNaC G42CgSJ0liaRNFqH9z2y4EyArZZQWhIwoVWwcXecLw2KgA3A3sP6fzuJ+kTzFWaW4B3GhpZbKyFY8 lmGcOoMIA==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1hzivT-0000e4-Q5; Mon, 19 Aug 2019 14:46:27 +0000 Date: Mon, 19 Aug 2019 07:46:27 -0700 From: "hch@infradead.org" To: Atish Patra Cc: "hch@infradead.org" , "aou@eecs.berkeley.edu" , "gregkh@linuxfoundation.org" , Anup Patel , "linux-kernel@vger.kernel.org" , "alexios.zavras@intel.com" , "palmer@sifive.com" , "paul.walmsley@sifive.com" , "linux-riscv@lists.infradead.org" , "allison@lohutok.net" Subject: Re: [PATCH] RISC-V: Issue a local tlb flush if possible. Message-ID: <20190819144627.GA27061@infradead.org> References: <20190810014309.20838-1-atish.patra@wdc.com> <20190812145631.GC26897@infradead.org> <20190813143027.GA31668@infradead.org> <3f55d5878044129a3cbb72b13b712e9a1c218dc7.camel@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3f55d5878044129a3cbb72b13b712e9a1c218dc7.camel@wdc.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 15, 2019 at 08:37:04PM +0000, Atish Patra wrote: > We get ton of them. Here is the stack dump. Looks like we might not need to flush anything at all here as the mm_struct was never scheduled to run on any cpu?