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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5628FC43334 for ; Mon, 11 Jul 2022 12:43:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231742AbiGKMnk (ORCPT ); Mon, 11 Jul 2022 08:43:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231793AbiGKMnb (ORCPT ); Mon, 11 Jul 2022 08:43:31 -0400 Received: from sender4-op-o14.zoho.com (sender4-op-o14.zoho.com [136.143.188.14]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94B21266 for ; Mon, 11 Jul 2022 05:43:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1657542496; cv=none; d=zohomail.com; s=zohoarc; b=d9jlwf2JduepAUH0sP5MVHxLsoRxqYD2zVBYKAyqOCrDGaIgIww8ZN60Ke5MlhVsrzfUaQ2eIIxKEk12xqZvw3+xwABssGIZS/XbfnFQt4TCJGWGWYbNNkvPYn0wolsnVKnqygo1CZ2KUFr1gNUmsVBoGII4AGDGQ7h/iH/HwbU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1657542496; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=nNMEZ/IULIqFkQZN/oBrcmZXnBPShQJWnrZceFIU7hk=; b=gA37RdDjMuGem70uRtqv1PDGFxctWfJodDZlIWpRWTJeFO9OkNhb3Gd4PeYqTdNUSlZ3q/f2uuIwvijb1BbEQekeqU1iLVnrKg67QDYGqop69TywVMtKVzqDyIMWmzcEFlntGgG8RXJEhitDFlYg53IVFY3bNn8ap2PUJuucakc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=linux.beauty; spf=pass smtp.mailfrom=me@linux.beauty; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1657542496; s=zmail; d=linux.beauty; i=me@linux.beauty; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-Id:Message-Id:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Reply-To; bh=nNMEZ/IULIqFkQZN/oBrcmZXnBPShQJWnrZceFIU7hk=; b=KrYo66Fvw84KWCAXvugb8MTWVK3cvnzI/YA9ujEKbC98ESaZwaOvHO0GXEbOMRiA BpF3GRKM/9dGBv3L14VlJ6NOF4KdgKbBkWVC8OvJdNV1wvSH1XcuuAicOHqR8lK8TlG PCzKIOnsOEY45R6iD7bsj0wBT8ORA5vXRpvmRxNA= Received: from sh-lchen.ambarella.net (180.169.129.130 [180.169.129.130]) by mx.zohomail.com with SMTPS id 1657542495481198.279413668139; Mon, 11 Jul 2022 05:28:15 -0700 (PDT) From: Li Chen To: Catalin Marinas , Will Deacon , Rob Herring , Frank Rowand , Andrew Morton Cc: Li Chen , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 2/4] mm/sparse: skip no-map memblock check when fill_subsection_map Date: Mon, 11 Jul 2022 20:24:52 +0800 Message-Id: <20220711122459.13773-3-me@linux.beauty> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220711122459.13773-1-me@linux.beauty> References: <20220711122459.13773-1-me@linux.beauty> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Li Chen When mhp use sparse_add_section, don't check no-map region, so that to allow no-map reserved memory to get struct page support. Signed-off-by: Li Chen Change-Id: I0d2673cec1b66adf695251037a00c240976b226f --- mm/sparse.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/sparse.c b/mm/sparse.c index 120bc8ea5293..a29cd1e7014f 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -690,7 +690,9 @@ static int fill_subsection_map(unsigned long pfn, unsigned long nr_pages) if (bitmap_empty(map, SUBSECTIONS_PER_SECTION)) rc = -EINVAL; - else if (bitmap_intersects(map, subsection_map, SUBSECTIONS_PER_SECTION)) + else if (memblock_is_map_memory(PFN_PHYS(pfn)) && + bitmap_intersects(map, subsection_map, + SUBSECTIONS_PER_SECTION)) rc = -EEXIST; else bitmap_or(subsection_map, map, subsection_map, -- 2.25.1