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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BFFA8CD5BC9 for ; Mon, 25 May 2026 17:19:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id EAF176B0088; Mon, 25 May 2026 13:19:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E5FEF6B0093; Mon, 25 May 2026 13:19:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D75BB6B0095; Mon, 25 May 2026 13:19:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id C54E36B0088 for ; Mon, 25 May 2026 13:19:46 -0400 (EDT) Received: from smtpin29.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 71BCE1C050E for ; Mon, 25 May 2026 17:19:46 +0000 (UTC) X-FDA: 84806604372.29.E12D77B Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf16.hostedemail.com (Postfix) with ESMTP id D573818000A for ; Mon, 25 May 2026 17:19:44 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=dvQBosqH; spf=pass (imf16.hostedemail.com: domain of osalvador@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=osalvador@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1779729584; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=wu0JytchWi892cy9Rbe8Jo63tHJaQJzkGdnUYJHGi5M=; b=ZrpCY4fv6uQg9oGIuv5J/mraGnous7+u/zv0oGC01P0xVpjLIhTs0S5QECxlH9vmymt1Bj EBoEBU4z2oevLsiLnB19Ff+pp57VrL2H/acEYLe6K+JWAipMkMXk3w9A/kjWKWmv5Ei4sA TNzxhLjbnRURgHJPCfhbQJQyAiqvZgs= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=dvQBosqH; spf=pass (imf16.hostedemail.com: domain of osalvador@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=osalvador@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1779729584; a=rsa-sha256; cv=none; b=JWFmF6GaSTkH2PzGQkmvI9oWFUC6TqAChw57k9Il6cwINl+TdANICdLHBEi47hURMdZWmX ZsbDVLEc+rK6i2IEaC0SpszHeIZhXAz5ApfU+XUAEGdPe45JUgVnz9ZUoCKTvquTCdYJKf n5o0+MQha915jNonYLUd7m+sUjpyLlg= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 1225B440F8; Mon, 25 May 2026 17:19:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E21B31F000E9; Mon, 25 May 2026 17:19:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779729583; bh=wu0JytchWi892cy9Rbe8Jo63tHJaQJzkGdnUYJHGi5M=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=dvQBosqHNOOqzeyxIGbT+uY3fnEI2sBSVY+Fw1Z+kdR0F4bUiCfscUkDYq/sZhe9V nVZsqXRIXK2/WnH/OaWD6ulApKmgoiFEITCjt1BP3xR6rjdRzHF3fljRYtYLEEOvJw RtLOazVjgIFAu9DE95fN7v9WEophxyqhbSelwTraQ8uG8WZyQtw8XWxfDys40L10W+ dqVAw00+UNPrRVC82gJUh6pYAGSiZOj+NvPmNDNlAprtsmpWJdk2MKj9wyAzA79ZYi XRyUssQNB9GRKHAsMtOXMISDpslXxRp/vdLqcPqYh8mA6t5imwPj19jO0nlBzbK2mw kXYUk+Ovr6dQg== Date: Mon, 25 May 2026 19:19:33 +0200 From: "Oscar Salvador (SUSE)" To: Muchun Song Cc: Andrew Morton , David Hildenbrand , Muchun Song , Oscar Salvador , Michael Ellerman , Madhavan Srinivasan , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Nicholas Piggin , Christophe Leroy , Ackerley Tng , Frank van der Linden , aneesh.kumar@linux.ibm.com, joao.m.martins@oracle.com, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 12/69] mm/hugetlb_cma: Validate hugetlb CMA range by zone at reserve time Message-ID: References: <20260513130542.35604-1-songmuchun@bytedance.com> <20260513130542.35604-13-songmuchun@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260513130542.35604-13-songmuchun@bytedance.com> X-Stat-Signature: eertkk6w5wkqy64ijnmejx76u1w1a9s9 X-Rspamd-Queue-Id: D573818000A X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1779729584-454880 X-HE-Meta: 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 EaFPNVhx DmQyhqMyYdllu9roi+uTx1G8ovFNcSqRI6xPTsyAxvQXlP3hWJ+StXGT2EbnPU+a0T73GZbo0f+wk9vdDnItaOFA6nemotGcuK0h5lYLnNceDftEcS6L28P3ykgt0G9SavPOvA6DMB8C0BNVCaTol1dJEPlJAU99J9Xs2Gwy9317PPiiefuixJFhsuA6dZkqC1IcnJrysnO2M9YRtyHvlZXa3qV9cbKxmTWKkWor1k8ZoqY5CjOCjZVRg8eKRv9keK9vnyLmo6A1FPN9Mbhmk1aIweJQy1WxmafPoz/msX5vxDQjxOdgr/AvTSQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, May 13, 2026 at 09:04:40PM +0800, Muchun Song wrote: > Hugetlb CMA allocation currently has to cope with CMA areas that span > multiple zones. > > Validate the reserved CMA range up front in hugetlb_cma_reserve() so > later hugetlb CMA allocations can assume a zone-consistent area. > > Also drop the pfn_valid() check from cma_validate_zones(). mem_section > is not fully initialized at this point, so the check can trigger false > warnings. Keep the sanity check in cma_activate_area() instead. > > Acked-by: Mike Rapoport (Microsoft) > Signed-off-by: Muchun Song Reviewed-by: Oscar Salvador (SUSE) -- Oscar Salvador SUSE Labs