From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752223AbeEQPlW (ORCPT ); Thu, 17 May 2018 11:41:22 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:45224 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751564AbeEQPlV (ORCPT ); Thu, 17 May 2018 11:41:21 -0400 Date: Thu, 17 May 2018 08:40:55 -0700 From: Larry Bassel To: Matthew Wilcox Cc: William Kucharski , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC] mm, THP: Map read-only text segments using large THP pages Message-ID: <20180517154055.GB6951@ubuette> References: <5BB682E1-DD52-4AA9-83E9-DEF091E0C709@oracle.com> <20180517152333.GA26718@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180517152333.GA26718@bombadil.infradead.org> User-Agent: Mutt/1.5.24 (2015-08-30) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8896 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=850 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805170145 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17 May 18 08:23, Matthew Wilcox wrote: > > I can't find any information on what page sizes SPARC supports. > Maybe you could point me at a reference? All I've managed to find is > the architecture manuals for SPARC which believe it is not their purpose > to mandate an MMU. > Page sizes of 8K, 64K, 512K, 4M, 32M, 256M, 2G, 16G are allowed architecturally -- some of these aren't present in some SPARC machines. Generally 8K, 64K, 4M, 256M, 2G, 16G are present on modern machines. Also note that the SPARC THP page size is 8M (so that it is PMD aligned). Larry