From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f181.google.com (mail-lb0-f181.google.com [209.85.217.181]) by kanga.kvack.org (Postfix) with ESMTP id 1E73D6B003C for ; Fri, 12 Sep 2014 17:19:29 -0400 (EDT) Received: by mail-lb0-f181.google.com with SMTP id z11so1621289lbi.40 for ; Fri, 12 Sep 2014 14:19:29 -0700 (PDT) Received: from mail-la0-f41.google.com (mail-la0-f41.google.com [209.85.215.41]) by mx.google.com with ESMTPS id tl10si8303286lbb.131.2014.09.12.14.19.27 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 12 Sep 2014 14:19:28 -0700 (PDT) Received: by mail-la0-f41.google.com with SMTP id s18so1744311lam.28 for ; Fri, 12 Sep 2014 14:19:27 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20140912141429.17d570d1a7e1cb99ec73f0f7@linux-foundation.org> References: <1410553043-575-1-git-send-email-ard.biesheuvel@linaro.org> <20140912141429.17d570d1a7e1cb99ec73f0f7@linux-foundation.org> Date: Fri, 12 Sep 2014 23:19:27 +0200 Message-ID: Subject: Re: [PATCH] mm: export symbol dependencies of is_zero_pfn() From: Ard Biesheuvel Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: kvm@vger.kernel.org, pbonzini@redhat.com, Christoffer Dall , linux-mm@kvack.org, linux-s390@vger.kernel.org, "linux-kernel@vger.kernel.org" , linux-mips@linux-mips.org, ralf@linux-mips.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com On 12 September 2014 23:14, Andrew Morton wrote: > On Fri, 12 Sep 2014 22:17:23 +0200 Ard Biesheuvel wrote: > >> In order to make the static inline function is_zero_pfn() callable by >> modules, export its symbol dependencies 'zero_pfn' and (for s390 and >> mips) 'zero_page_mask'. > > So hexagon and score get the export if/when needed. > Exactly. >> We need this for KVM, as CONFIG_KVM is a tristate for all supported >> architectures except ARM and arm64, and testing a pfn whether it refers >> to the zero page is required to correctly distinguish the zero page >> from other special RAM ranges that may also have the PG_reserved bit >> set, but need to be treated as MMIO memory. >> >> Signed-off-by: Ard Biesheuvel >> --- >> arch/mips/mm/init.c | 1 + >> arch/s390/mm/init.c | 1 + >> mm/memory.c | 2 ++ > > Looks OK to me. Please include the patch in whichever tree is is that > needs it, and merge it up via that tree. > Thanks. @Paolo: could you please take this (with Andrew's ack), and put it before the patch you took earlier today? Thanks, Ard. -- 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