From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E915C04EB8 for ; Tue, 4 Dec 2018 13:04:56 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D800C20851 for ; Tue, 4 Dec 2018 13:04:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D800C20851 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 438MXN66FXzDqHm for ; Wed, 5 Dec 2018 00:04:52 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=redhat.com (client-ip=209.132.183.28; helo=mx1.redhat.com; envelope-from=fweimer@redhat.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 438MR33YtlzDqcH for ; Wed, 5 Dec 2018 00:00:14 +1100 (AEDT) Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 32DA28666B; Tue, 4 Dec 2018 13:00:11 +0000 (UTC) Received: from oldenburg2.str.redhat.com (dhcp-192-219.str.redhat.com [10.33.192.219]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3EC97100034B; Tue, 4 Dec 2018 13:00:09 +0000 (UTC) From: Florian Weimer To: Ram Pai Subject: Re: [PATCH] powerpc/pkeys: copy pkey-tracking-information at fork() References: <1543869802-15372-1-git-send-email-linuxram@us.ibm.com> Date: Tue, 04 Dec 2018 14:00:07 +0100 In-Reply-To: <1543869802-15372-1-git-send-email-linuxram@us.ibm.com> (Ram Pai's message of "Mon, 3 Dec 2018 12:43:22 -0800") Message-ID: <87r2exih0o.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Tue, 04 Dec 2018 13:00:12 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dave.hansen@linux.intel.com, mhocko@kernel.org, Ulrich.Weigand@de.ibm.com, bauerman@linux.vnet.ibm.com, msuchanek@suse.de, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" * Ram Pai: > +void arch_dup_pkeys(struct mm_struct *oldmm, struct mm_struct *mm) > +{ > + /* Duplicate the oldmm pkey state in mm: */ > + mm_pkey_allocation_map(mm) = mm_pkey_allocation_map(oldmm); > + mm->context.execute_only_pkey = oldmm->context.execute_only_pkey; > +} Looks reasonable to me. Thanks, Florian (who is not a kernel developer though)