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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A088FCC9B2 for ; Tue, 10 Mar 2026 03:36:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ot5C4phsn/D5HCjzZ0Ig3HqX6b1yZe2wL22xhQfLHmg=; b=rwlZ7DEw36hvU96P8pU5OfDyZt +RzA9kWe6qTSSfP5Iwqvl5Sh5fqEwgBpXqBZXdwePBT6H9YN07N/11t/vc0PSx8fiuuRlXdvfnOoB qfGvm+U7feBK6L8uul1pWNbsC05blWioD/zMG9jaIbILV1puQ97jdcisty3HXzE1f1wLQe0o32b/Y QZfvv4FgSzwKdLwMj3mtSetU3jHTEkeX6NqRCpEYIFEhfo1kcvAfiZIfzZcYnw9r6Wp4tdPSY9mOh 5S/vpPNrVx3te5pVbOmo2COqO/2RVTn5PGN6/XYhBaMs+fD2gwNTI98t2TnlpNKXWeRyvLOvuRnrl cXpSZLkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vznth-00000008fdN-152h; Tue, 10 Mar 2026 03:36:41 +0000 Received: from canpmsgout05.his.huawei.com ([113.46.200.220]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vznte-00000008fd2-1qdU for linux-arm-kernel@lists.infradead.org; Tue, 10 Mar 2026 03:36:39 +0000 dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=ot5C4phsn/D5HCjzZ0Ig3HqX6b1yZe2wL22xhQfLHmg=; b=u/Y5l5+N4i469pymJs6TizNMRhaXRY3XQYDkxsFl8M0qt2iPo/czlg6L4roHgwf6Ip1oXoqm1 ascKg5gs8YVj2fROA1QIFoKpqalvRjzL7LS7HXslvZjro8o1K1ud6Vkerhap9qLy7VjeW+0w97x UGB+091hZnHHBRVLz06b+qk= Received: from mail.maildlp.com (unknown [172.19.162.144]) by canpmsgout05.his.huawei.com (SkyGuard) with ESMTPS id 4fVKCg5mZDz12LCw; Tue, 10 Mar 2026 11:30:55 +0800 (CST) Received: from kwepemr500001.china.huawei.com (unknown [7.202.194.229]) by mail.maildlp.com (Postfix) with ESMTPS id F058D40538; Tue, 10 Mar 2026 11:36:31 +0800 (CST) Received: from [10.174.179.248] (10.174.179.248) by kwepemr500001.china.huawei.com (7.202.194.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 10 Mar 2026 11:36:29 +0800 Message-ID: <0dc36f64-3e6c-4e4b-bdd1-6e364babb0bc@huawei.com> Date: Tue, 10 Mar 2026 11:36:29 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC v3 2/4] mm/pgtable: Make pfn_pte() filter out huge page attributes To: Matthew Wilcox CC: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Kefeng Wang , References: <20260228070906.1418911-1-yintirui@huawei.com> <20260228070906.1418911-3-yintirui@huawei.com> <5eaf3846-01db-471e-9903-b0b239d7838d@suse.com> From: Yin Tirui In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.179.248] X-ClientProxiedBy: kwepems100001.china.huawei.com (7.221.188.238) To kwepemr500001.china.huawei.com (7.202.194.229) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260309_203638_664213_C135BDEC X-CRM114-Status: UNSURE ( 7.79 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 3/6/2026 12:25 PM, Matthew Wilcox wrote: > > I don't think we should have pgprot_large_2_4k(). Or rather, I think it > should be embedded in pmd_pgprot() / pud_pgprot(). That is, we should > have an 'ideal' pgprot which, on x86, perhaps matches that used by the > 4k level. pfn_pmd() should be converting from the ideal pgprot to > that actually used by PMDs (and setting _PAGE_PSE?) > Hi Willy, I will take this route and implement the embedded approach for the v4 respin. -- Yin Tirui