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 DA992E63C9A for ; Sun, 25 Jan 2026 09:59:17 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B10BC6B0005; Sun, 25 Jan 2026 04:59:16 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A947A6B0088; Sun, 25 Jan 2026 04:59:16 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9A0B66B0089; Sun, 25 Jan 2026 04:59:16 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 8B2206B0005 for ; Sun, 25 Jan 2026 04:59:16 -0500 (EST) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id D7C8413B0A8 for ; Sun, 25 Jan 2026 09:59:15 +0000 (UTC) X-FDA: 84370038270.08.151D9EC Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf02.hostedemail.com (Postfix) with ESMTP id 31F9680004 for ; Sun, 25 Jan 2026 09:59:14 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=lXW3ae0Y; spf=pass (imf02.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@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=1769335154; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=LzBXbcek7hEhz5sJ4rS9689zK9sEhZN48jjP9wNdoTg=; b=E3M3IjNm9a7Oh+MT0/3H0jtBwYArVt6W1qbwAhIPRw0Ao8odKTwVBKg57j26bg3DYbp7i0 oJJgDP9JIy2itmZzdtgkDNPGCjJuULdhHduC07/CDF4OXANj8z/RqD6oaR+EFiuCQheOPF oGFME6kXMKKiAEm/KikB42xViaYgqMw= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=lXW3ae0Y; spf=pass (imf02.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1769335154; a=rsa-sha256; cv=none; b=KNiO3YlNh2bky5NFsgtv5kuKzXurTvB/3+gBFsN5aHAumLHSKtvvmR+NYl0RTPAxTqJ7dZ Cxxl7st0n382xxr0qvyLdQeMA0NaqTGNswJ1pksB6AMRMK6tn6nksyzbtuxk1ZSOY59D60 9CQBwrUmwcEGA3N7YxHKjIn4qzthd5I= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id E4C0340795; Sun, 25 Jan 2026 09:59:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4929EC4CEF1; Sun, 25 Jan 2026 09:59:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769335152; bh=t90pzN2k6Whbca/34ndSIUtQ6ODauPo1RiRNlXzDNBs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=lXW3ae0YU8z55SpbxpHPpo8QS9OjGqTcHsbiii51ODHCMOf6hliMbhrjJWn+728Be TgZj79d5jvu5iItz6H9z2pmlrAqZUWh5ktcnp/oBBLBErOg264g+S0l93REVWuqUc7 9f1SvxnhTk/H3zWkQkzLti8BWy0U2XDnGrip1KUUg+j/NWfT1ToyfG8YMEEV0sxDWC KglKM8yIWZ/13LlIhLbEqUClho2mOfcPaccYreX2EQEnOjI+jvuATB8GxADABVYNyK Jh2oups9hDCMfNMF3wtxjcp2b1X8NBJWd29wiq4EXkdQUSJ2jgLnBg87nxA121pjwM f05aOgFlDDr5w== Date: Sun, 25 Jan 2026 11:58:58 +0200 From: Mike Rapoport To: Huacai Chen Cc: Lain Fearyncess Yang , WANG Xuerui , Kexy Biscuit , Mingcong Bai , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Shuah Khan , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Arnd Bergmann , Jiaxun Yang , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH] loongarch: wire up memfd_secret system call Message-ID: References: <20260109051054.188030-1-fearyncess@aosc.io> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 31F9680004 X-Stat-Signature: snj9u1sajc4ermfynhao7pfzdtnusnj4 X-Rspam-User: X-HE-Tag: 1769335154-824475 X-HE-Meta: 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 xoUW0asv pKsMAzEHJjXGM3IYLttw24b/8qQROCkX77QP+L5713mF34jBZGq2x/yKJ/OYxneJRNN+futZdpYYKPf+f3p4t6ttOwx346T7acH/zh5ogxm8wSAyo2bw8QwnVZAtI16CTM2Jn9wy7WOCogFZzoPXO1x31Hs7EXz2h4QRVsXArS1d7o5nTPziwCtZCghk2PYa+Pc7VbJPaXoWdKioWXg/LjLd7qi82yEj/oVKmnmVu4q50QqaLKQ+S6+Xht6aH0Dlk+P7K5UbI/Mc72ziqyH5VEQpSHFpMS1+1hB244zC2Enpq2Vq5LblvDLfIEQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, Jan 25, 2026 at 12:03:25PM +0800, Huacai Chen wrote: > On Fri, Jan 9, 2026 at 4:21 PM Mike Rapoport wrote: > > > > On Fri, Jan 09, 2026 at 01:10:51PM +0800, Lain Fearyncess Yang wrote: > > > From: "Lain \"Fearyncess\" Yang" > > > > > > LoongArch supports ARCH_HAS_SET_DIRECT_MAP, therefore wire up the > > > memfd_secret system call, which depends on it. > > > > LoongArch version of set_memory* does not support splitting of leaf PMD > > entries. Does LoongArch always use PTE-level mappings in the direct map? > No PMD level mappings now. Thanks for the clarification. You can add Acked-by: Mike Rapoport (Microsoft) if it's not too late :) > Huacai -- Sincerely yours, Mike.