From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f44.google.com (mail-pa0-f44.google.com [209.85.220.44]) by kanga.kvack.org (Postfix) with ESMTP id 9B24C6B0098 for ; Mon, 25 May 2015 12:48:22 -0400 (EDT) Received: by pacwv17 with SMTP id wv17so74074892pac.2 for ; Mon, 25 May 2015 09:48:22 -0700 (PDT) Received: from foss.arm.com (foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id ea16si16853313pad.208.2015.05.25.09.48.21 for ; Mon, 25 May 2015 09:48:21 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable From: Catalin Marinas Mime-Version: 1.0 (1.0) Subject: Re: [RFC PATCH 2/2] arm64: Implement vmalloc based thread_info allocator Date: Mon, 25 May 2015 19:47:15 +0300 Message-Id: References: <1432483340-23157-1-git-send-email-jungseoklee85@gmail.com> <5992243.NYDGjLH37z@wuerfel> In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Jungseok Lee Cc: Arnd Bergmann , Catalin Marinas , "barami97@gmail.com" , Will Deacon , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" On 25 May 2015, at 13:01, Jungseok Lee wrote: >> Could the stack size be reduced to 8KB perhaps? >=20 > I guess probably not. >=20 > A commit, 845ad05e, says that 8KB is not enough to cover SpecWeb benchmark= . We could go back to 8KB stacks if we implement support for separate IRQ=20 stack on arm64. It's not too complicated, we would have to use SP0 for (kern= el) threads=20 and SP1 for IRQ handlers. Catalin= -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org