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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 45330C433DB for ; Mon, 11 Jan 2021 16:55:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E99372242A for ; Mon, 11 Jan 2021 16:55:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389055AbhAKQyl (ORCPT ); Mon, 11 Jan 2021 11:54:41 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:32305 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729070AbhAKQyk (ORCPT ); Mon, 11 Jan 2021 11:54:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610383994; 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=jGufGJ9Ezi29rGDW7hmHg7R76kh5lHSjpsexDtXG7s8=; b=X/Oai3c/+SH2FXnmfoH2LJ6emdZMDkWaLS3mFxKbnvUrVVrJvqypm6n3RO6zahIgkvWR/V 7besEP0BA5fM3Dm/IFgkJW0ujl4E03mI4Q8YwlxrbdCtGTHbO0jVZfp+CvVZusJAx8SRuF A+R7WeCzP8+R/qaGvSx6d8wEVyLgbog= 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-301-uasyUNkCODufEqtKq6MVSQ-1; Mon, 11 Jan 2021 11:53:10 -0500 X-MC-Unique: uasyUNkCODufEqtKq6MVSQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B98DDAFA83; Mon, 11 Jan 2021 16:53:08 +0000 (UTC) Received: from [10.36.115.103] (ovpn-115-103.ams2.redhat.com [10.36.115.103]) by smtp.corp.redhat.com (Postfix) with ESMTP id 479C550F1A; Mon, 11 Jan 2021 16:53:07 +0000 (UTC) Subject: Re: [PATCH 3/5] acpi,memhotplug: Enable MHP_MEMMAP_ON_MEMORY when supported To: Oscar Salvador , akpm@linux-foundation.org Cc: mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, vbabka@suse.cz, pasha.tatashin@soleen.com References: <20201217130758.11565-1-osalvador@suse.de> <20201217130758.11565-4-osalvador@suse.de> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: Date: Mon, 11 Jan 2021 17:53:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20201217130758.11565-4-osalvador@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17.12.20 14:07, Oscar Salvador wrote: > Let the caller check whether it can pass MHP_MEMMAP_ON_MEMORY by > checking mhp_supports_memmap_on_memory(). > MHP_MEMMAP_ON_MEMORY can only be set in case > ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE is enabled, the architecture supports > altmap, and the range to be added spans a single memory block. > > Signed-off-by: Oscar Salvador > --- > drivers/acpi/acpi_memhotplug.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c > index b02fd51e5589..8cc195c4c861 100644 > --- a/drivers/acpi/acpi_memhotplug.c > +++ b/drivers/acpi/acpi_memhotplug.c > @@ -171,6 +171,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) > acpi_handle handle = mem_device->device->handle; > int result, num_enabled = 0; > struct acpi_memory_info *info; > + mhp_t mhp_flags = MHP_NONE; > int node; > > node = acpi_get_node(handle); > @@ -194,8 +195,10 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) > if (node < 0) > node = memory_add_physaddr_to_nid(info->start_addr); > > + if (mhp_supports_memmap_on_memory(info->length)) > + mhp_flags |= MHP_MEMMAP_ON_MEMORY; > result = __add_memory(node, info->start_addr, info->length, > - MHP_NONE); > + mhp_flags); > > /* > * If the memory block has been used by the kernel, add_memory() > Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb