From nobody Tue Feb 10 02:58:54 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41B71C7EE24 for ; Mon, 15 May 2023 09:14:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237230AbjEOJOR (ORCPT ); Mon, 15 May 2023 05:14:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbjEOJN0 (ORCPT ); Mon, 15 May 2023 05:13:26 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5FA49212E for ; Mon, 15 May 2023 02:10:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1684141853; 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=Uaseq8uUQQ6QMQSRfFux0A76lTwwiGZ3GmLj5/5Y0lk=; b=hLVtTz/WvCwJgMNr78AO2M+yQj8iy7TzeGb4GBePRbSeCXcRrhCQJflHexF17iMuRJYJNr F78NI5sw+2Sx/AuWUc1BXlMuSa0LGNBAvEbFGNpkFO56SBp+qZySqdJ1SBTElb5qGC5EMw HIcVCCB3+kREV6TsGi26utEQCzirYIw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-507-ER6juC3BMNSvQDD-_oKHbw-1; Mon, 15 May 2023 05:10:50 -0400 X-MC-Unique: ER6juC3BMNSvQDD-_oKHbw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A324585A588; Mon, 15 May 2023 09:10:49 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-12-32.pek2.redhat.com [10.72.12.32]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3611340C2070; Mon, 15 May 2023 09:10:42 +0000 (UTC) From: Baoquan He To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-mm@kvack.org, arnd@arndb.de, christophe.leroy@csgroup.eu, hch@infradead.org, agordeev@linux.ibm.com, wangkefeng.wang@huawei.com, schnelle@linux.ibm.com, David.Laight@ACULAB.COM, shorne@gmail.com, willy@infradead.org, deller@gmx.de, Baoquan He Subject: [PATCH v5 RESEND 14/17] mm/ioremap: Consider IOREMAP space in generic ioremap Date: Mon, 15 May 2023 17:08:45 +0800 Message-Id: <20230515090848.833045-15-bhe@redhat.com> In-Reply-To: <20230515090848.833045-1-bhe@redhat.com> References: <20230515090848.833045-1-bhe@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Christophe Leroy Architectures like powerpc have a dedicated space for IOREMAP mappings. If so, use it in generic_ioremap_pro(). Signed-off-by: Christophe Leroy Signed-off-by: Baoquan He Reviewed-by: Christoph Hellwig Reviewed-by: Mike Rapoport (IBM) --- mm/ioremap.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/ioremap.c b/mm/ioremap.c index 2fbe6b9bc50e..4a7749d85044 100644 --- a/mm/ioremap.c +++ b/mm/ioremap.c @@ -35,8 +35,13 @@ void __iomem *generic_ioremap_prot(phys_addr_t phys_addr= , size_t size, if (!ioremap_allowed(phys_addr, size, pgprot_val(prot))) return NULL; =20 +#ifdef IOREMAP_START + area =3D __get_vm_area_caller(size, VM_IOREMAP, IOREMAP_START, + IOREMAP_END, __builtin_return_address(0)); +#else area =3D get_vm_area_caller(size, VM_IOREMAP, __builtin_return_address(0)); +#endif if (!area) return NULL; vaddr =3D (unsigned long)area->addr; @@ -66,7 +71,7 @@ void generic_iounmap(volatile void __iomem *addr) if (!iounmap_allowed(vaddr)) return; =20 - if (is_vmalloc_addr(vaddr)) + if (is_ioremap_addr(vaddr)) vunmap(vaddr); } =20 --=20 2.34.1