Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp2806610ybl; Mon, 19 Aug 2019 07:47:50 -0700 (PDT) X-Google-Smtp-Source: APXvYqw1DNavpNTmK5NA2lGa1wdUUV5Nif0tA6XKhisHJ9f4JLGMyvkzqYVxbtt8BgwTRCvZDNbb X-Received: by 2002:a63:6a4a:: with SMTP id f71mr5014167pgc.409.1566226070627; Mon, 19 Aug 2019 07:47:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566226070; cv=none; d=google.com; s=arc-20160816; b=GsvOqfbQGmhgrKAxLqsXnfAhWOp0PVIYM6LFSx6iFjp333FIvvfJaMWw2z+Lrs/FXa mD1dQlxTymTv6/CkgwHgsmZEOHBCNQ9pN7cd/+WqIYmSr8Zlil9546+tG5esPza5024S HLlXPRI5TlUvdrQq1Oi0lJVxkj2kWPx8Zpv7y8tT204NKiG4OwfSa6qu9Cx4VAPpwr3g Oz/+tNpaMrTXRyDYt88RmevnCSXOHvWkm+zjkdRhfZZ//2ViFjl3OVgSgSGqcHZAZBYS 9jXv7ETBbuA5++yaPNVNHScZ23NuVTttTS9tAiv59jZWzIrOc8KeMJZ8u92qE7NTUDd3 X/LA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=JiSnL2BNgZVd2k2mhKTmScy1iLsHV0f5TZ+rXL+j1I4=; b=zgCmcxulBlwZtHG8aCWC6ZYybEH0lXoxtncgjGaJDIlQwQ9dpO/3uAqCRd75m/gnA5 q4eCe6IfPFkSRMyTU0Z0Tzo3KabRmxoopMAiEkheCQQaALww8foa0lm38GdSVk/xGwkK IF53m5WWp9jNlgS9Q6rOKTu/79FVtKuz3ZLAqF1WWjhhcPx8973zhpgnO/nOctQekBKH LuY4AJ3yUduQewoe/exDVp5Jc2aRdCiJwKaMColjkcyW+szyVf46HC44bMyUUvs9E10x 1V7cN/+1q6J55yzsE4wC8SkWOdL8kTHlhAtxxhrrUlL3mfOKTArZHoj96cvBartOCp9y fRYQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=PDgOXA3a; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 97si10053463pla.40.2019.08.19.07.47.36; Mon, 19 Aug 2019 07:47:50 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=PDgOXA3a; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726553AbfHSOqb (ORCPT + 99 others); Mon, 19 Aug 2019 10:46:31 -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?