From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757984AbcAYSpG (ORCPT ); Mon, 25 Jan 2016 13:45:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35811 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754597AbcAYSo6 (ORCPT ); Mon, 25 Jan 2016 13:44:58 -0500 Subject: Re: [PATCH 3/4] arm64: let set_memory_xx(addr, 0) succeed. To: mika.penttila@nextfour.com, linux-kernel@vger.kernel.org References: <1453561543-14756-1-git-send-email-mika.penttila@nextfour.com> <1453561543-14756-4-git-send-email-mika.penttila@nextfour.com> Cc: linux-mm@kvack.org, rientjes@google.com, linux@arm.linux.org.uk, linux-arm-kernel From: Laura Abbott Message-ID: <56A66D28.1080204@redhat.com> Date: Mon, 25 Jan 2016 10:44:56 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <1453561543-14756-4-git-send-email-mika.penttila@nextfour.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/23/2016 07:05 AM, mika.penttila@nextfour.com wrote: > From: Mika Penttilä > > This makes set_memory_xx() consistent with x86. > > Signed-off-by: Mika Penttilä mika.penttila@nextfour.com > > --- > arch/arm64/mm/pageattr.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c > index 3571c73..52220dd 100644 > --- a/arch/arm64/mm/pageattr.c > +++ b/arch/arm64/mm/pageattr.c > @@ -51,6 +51,9 @@ static int change_memory_common(unsigned long addr, int numpages, > WARN_ON_ONCE(1); > } > > + if (!numpages) > + return 0; > + > if (start < MODULES_VADDR || start >= MODULES_END) > return -EINVAL; > > I think this is going to conflict with Ard's patch lkml.kernel.org/g/<1453125665-26627-1-git-send-email-ard.biesheuvel@linaro.org> Can you rebase on top of that? Thanks, Laura