Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934325AbdDGQU5 (ORCPT ); Fri, 7 Apr 2017 12:20:57 -0400 Received: from mail-wr0-f182.google.com ([209.85.128.182]:33075 "EHLO mail-wr0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934294AbdDGQUs (ORCPT ); Fri, 7 Apr 2017 12:20:48 -0400 Date: Fri, 7 Apr 2017 19:20:44 +0300 From: "Kirill A. Shutemov" To: hpa@zytor.com Cc: Anshuman Khandual , "Kirill A. Shutemov" , Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Dmitry Safonov Subject: Re: [PATCH 8/8] x86/mm: Allow to have userspace mappings above 47-bits Message-ID: <20170407162044.ntn4w6ukpxhi2ei2@node.shutemov.name> References: <20170406140106.78087-1-kirill.shutemov@linux.intel.com> <20170406140106.78087-9-kirill.shutemov@linux.intel.com> <8d68093b-670a-7d7e-2216-bf64b19c7a48@linux.vnet.ibm.com> <20170407155945.7lyapjbwacg3ikw6@node.shutemov.name> <2A1F4E56-9374-4C41-876C-6E6CBD16DB22@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2A1F4E56-9374-4C41-876C-6E6CBD16DB22@zytor.com> User-Agent: NeoMutt/20170306 (1.8.0) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 322 Lines: 11 On Fri, Apr 07, 2017 at 09:09:27AM -0700, hpa@zytor.com wrote: > >I think the reasonable way for an application to claim it's 63-bit > >clean > >is to make allocations with (void *)-1 as hint address. > > You realize that people have said that about just about every memory Any better solution? -- Kirill A. Shutemov