From nobody Tue Feb 10 01:30:33 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1571764668; cv=none; d=zoho.com; s=zohoarc; b=XSqI5m4gm2wYcmfwrD3yy2DeuKz+fO8BANdvwaMf8oW97fT+Kgr04BZ++5ZJk1Yp8ZEU8QjQB5/vJJcSp64nWd4oDmUJq64466ULKiyc40C4ZTMF6y3w2ueUn6lDwaj/0vSziptwwm2J3yx8TP4+JmQOW4zyW7xN534unbIdhKo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1571764668; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=Encl5bG3n4oXEl5eEEaYuMDHwAbaxd+ggtO2+QOMArY=; b=aWfhhwBKXv8Yf4Vhqts7JgKvx7eq1i2fTsUkj30wctHrCwOlJYlIVUDtXsuTjfQJK0ixLsBomN1wqTc55R9z7w2HZJmfgU3pt4EBo+NWLZQ7j1Z9/cBD03AcZ9mG1jGdj7w67KmmdZ/ZR+1tzTGHSxiwjaZP0ggUL1exEoXJ8ts= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1571764668478318.7630572640834; Tue, 22 Oct 2019 10:17:48 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iMxlo-0006gx-OL; Tue, 22 Oct 2019 17:16:32 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iMxlm-0006gU-Nk for xen-devel@lists.xenproject.org; Tue, 22 Oct 2019 17:16:30 +0000 Received: from us-smtp-1.mimecast.com (unknown [205.139.110.120]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id af8424d2-f4ef-11e9-8aca-bc764e2007e4; Tue, 22 Oct 2019 17:16:29 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-152-fU-qS8_YMIyHrwTYnW1SnA-1; Tue, 22 Oct 2019 13:16:26 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8F4E9107AD31; Tue, 22 Oct 2019 17:16:21 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-248.ams2.redhat.com [10.36.116.248]) by smtp.corp.redhat.com (Postfix) with ESMTP id 36C045DA8D; Tue, 22 Oct 2019 17:16:01 +0000 (UTC) X-Inumbo-ID: af8424d2-f4ef-11e9-8aca-bc764e2007e4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571764588; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=U1S4FppofmjyZijjNbIY0XCtcc4HnEIEIXbCi0lPb5Y=; b=LeeYjhX3hBVL/oRC2qHu1DVRYcrCfkF+vRZNKX3DygB0PAxAwwAtyx8hGHz/4zR+10k7aK jCl77U0PKwONnXN7YCUJXVG3O3WN9ijJ1wRZJDCaYcYqFJwIbGXfqkybM2Pmtvo6B5GJxF Kbs8S2wphjxwTCwVZcOA6y1oWq44CGE= From: David Hildenbrand To: linux-kernel@vger.kernel.org Date: Tue, 22 Oct 2019 19:12:36 +0200 Message-Id: <20191022171239.21487-10-david@redhat.com> In-Reply-To: <20191022171239.21487-1-david@redhat.com> References: <20191022171239.21487-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: fU-qS8_YMIyHrwTYnW1SnA-1 X-Mimecast-Spam-Score: 0 Subject: [Xen-devel] [PATCH RFC v1 09/12] powerpc/64s: Prepare hash_page_do_lazy_icache() for PG_reserved changes X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Kate Stewart , Sasha Levin , linux-hyperv@vger.kernel.org, Michal Hocko , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , kvm@vger.kernel.org, David Hildenbrand , KarimAllah Ahmed , Benjamin Herrenschmidt , Dave Hansen , Alexander Duyck , Michal Hocko , Paul Mackerras , linux-mm@kvack.org, Pavel Tatashin , Paul Mackerras , Michael Ellerman , "H. Peter Anvin" , Wanpeng Li , Alexander Duyck , "K. Y. Srinivasan" , Fabio Estevam , Ben Chan , Kees Cook , devel@driverdev.osuosl.org, Stefano Stabellini , Stephen Hemminger , "Aneesh Kumar K.V" , Joerg Roedel , x86@kernel.org, YueHaibing , Mike Rapoport , Madhumitha Prabakaran , Peter Zijlstra , Ingo Molnar , Vlastimil Babka , Nishka Dasgupta , Anthony Yznaga , Oscar Salvador , Dan Carpenter , "Isaac J. Manjarres" , Matt Sickler , Juergen Gross , Anshuman Khandual , Haiyang Zhang , =?UTF-8?q?Simon=20Sandstr=C3=B6m?= , Dan Williams , kvm-ppc@vger.kernel.org, Qian Cai , Alex Williamson , Mike Rapoport , Borislav Petkov , Nicholas Piggin , Andy Lutomirski , xen-devel@lists.xenproject.org, Boris Ostrovsky , Todd Poynor , Vitaly Kuznetsov , Allison Randal , Jim Mattson , Christophe Leroy , Vandana BN , Jeremy Sowden , Greg Kroah-Hartman , Cornelia Huck , Pavel Tatashin , Mel Gorman , Sean Christopherson , Rob Springer , Thomas Gleixner , Johannes Weiner , Paolo Bonzini , Andrew Morton , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Right now, ZONE_DEVICE memory is always set PG_reserved. We want to change that. We could explicitly check for is_zone_device_page(page). But looking at the pfn_valid() check, it seems safer to just use pfn_to_online_page() here, that will skip all ZONE_DEVICE pages right away. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: "Aneesh Kumar K.V" Cc: Christophe Leroy Cc: Nicholas Piggin Cc: Andrew Morton Cc: Mike Rapoport Cc: YueHaibing Signed-off-by: David Hildenbrand --- arch/powerpc/mm/book3s64/hash_utils.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s= 64/hash_utils.c index 6c123760164e..a1566039e747 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -1084,13 +1084,15 @@ void hash__early_init_mmu_secondary(void) */ unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap) { - struct page *page; + struct page *page =3D pfn_to_online_page(pte_pfn(pte)); =20 - if (!pfn_valid(pte_pfn(pte))) + /* + * We ignore any pages that are not online (not managed by the buddy). + * This includes ZONE_DEVICE pages. + */ + if (!page) return pp; =20 - page =3D pte_page(pte); - /* page is dirty */ if (!test_bit(PG_arch_1, &page->flags) && !PageReserved(page)) { if (trap =3D=3D 0x400) { --=20 2.21.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel