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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7520BE7D0AB for ; Thu, 21 Sep 2023 22:15:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DE7AE6B026A; Thu, 21 Sep 2023 18:15:17 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D98116B026B; Thu, 21 Sep 2023 18:15:17 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C5F476B026C; Thu, 21 Sep 2023 18:15:17 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id B664F6B026A for ; Thu, 21 Sep 2023 18:15:17 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 853CFA0C47 for ; Thu, 21 Sep 2023 22:15:17 +0000 (UTC) X-FDA: 81262011474.14.23AFE86 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf04.hostedemail.com (Postfix) with ESMTP id 0763D4000E for ; Thu, 21 Sep 2023 22:15:14 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=L+gPhURi; spf=pass (imf04.hostedemail.com: domain of song@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=song@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1695334515; 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=95kGdQ6VX4wRjivrfibgteImGce1XCBBRXX6nBCvNns=; b=C/1frQ2mPPeMRadak+24Av17dcRKig5HDKK2SSf0u71xDn4x5dey8Kb2eYdmjgOB/8Sn6s DGhNx+lmhP74xE6q76CQ2erzjjJdqcwTu7KynsjizRW0tL1svMBFdaGZI8EDSI7RDwLu1i lmZGhG+FAuEn0PR8J422zvbDPdsSI7s= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1695334515; a=rsa-sha256; cv=none; b=JAsNZHDEAZ/Ims0qFtbqoSEQMHUX30INpKzGQzl3v2MEQkkN9R5s4nQcUpoK/tYH+yBkv+ kLodYlx8Hbg6SCHaz2n/prDR1o9RSifbCZQUXgR+ISkg+fW6sxki6yPBY+eiqj0g/clgic k6qLZUvTua5nYTqCqmpQSMUgzGElB9A= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=L+gPhURi; spf=pass (imf04.hostedemail.com: domain of song@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=song@kernel.org; dmarc=pass (policy=none) header.from=kernel.org Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 475B8CE23F9 for ; Thu, 21 Sep 2023 22:15:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9DC3CC433AD for ; Thu, 21 Sep 2023 22:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695334508; bh=j+YpilMLGCC5ERDcgjdZY/UEYbvSwBxJ4mCRlrG3+go=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=L+gPhURipQCVv5lQ6lMZEeHafe2Map2Z3SouhfPMvOq3LIN5npAvywgTLrdsrYoDw lcSQt8Ka8fmcf1d8ZM8qIlXPNumlpX3JZKdESMC/KpenaIBv7uGMi+LUkvfCfO+Vlt Ms3BphwgqclEjVmwfHiEkkrb7+Ta8zh3Ag+RqoFwGGlsIzXfHKrtVOjxsaXB9alIhH JK+MwyCKXlDL+alHW9KkokkF6FFQuanhqMW2Sdmh2NRZkCVnTo9ppIcJLwe1SwZkYz JQdTcMm4ZdnaSVT+CVcsNzzz7DKO5EXfQ9zO0FIrMF11/hIqK2vZeqyr2ZUZVULtBX NHK7vuo8iml0w== Received: by mail-lf1-f49.google.com with SMTP id 2adb3069b0e04-50337b43ee6so2384845e87.3 for ; Thu, 21 Sep 2023 15:15:08 -0700 (PDT) X-Gm-Message-State: AOJu0Yz7rD2BAMlPKqcz0eEYulMR1vqunYAb71l7o8hDAnKxCyAkbCVY UDgeqfttX0D4xjTqT/waUF5uUVSGFk4rGO6+qYs= X-Google-Smtp-Source: AGHT+IEOsdVYa+3bdtK+lEO/ooz4+HKzafq7xPbE1njdx3C8+57KFx3hJ2XTTULe0kNONSMtwPONNYKDgjY7yPaLcMU= X-Received: by 2002:a05:6512:3254:b0:503:1c07:f7f9 with SMTP id c20-20020a056512325400b005031c07f7f9mr5552939lfr.29.1695334506735; Thu, 21 Sep 2023 15:15:06 -0700 (PDT) MIME-Version: 1.0 References: <20230918072955.2507221-1-rppt@kernel.org> <20230918072955.2507221-3-rppt@kernel.org> In-Reply-To: <20230918072955.2507221-3-rppt@kernel.org> From: Song Liu Date: Thu, 21 Sep 2023 15:14:54 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v3 02/13] mm: introduce execmem_text_alloc() and execmem_free() To: Mike Rapoport Cc: linux-kernel@vger.kernel.org, Andrew Morton , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Michael Ellerman , Nadav Amit , "Naveen N. Rao" , Palmer Dabbelt , Puranjay Mohan , Rick Edgecombe , Russell King , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Will Deacon , bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 0763D4000E X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: 4yfaz38mc9q14yp7ih3zr7gmai8bu3ru X-HE-Tag: 1695334514-605781 X-HE-Meta: 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 KW9/XJgN WUXLH+bRFII0p/YEyK3bbHK0RtYi0BHK0Dr3ZZbrECEYEzn2LCwOlOKa0cjLjLpGlO/sRMM9nadoy9agWi9QBUx8JOAnEklgwNbeNpPQDs2+jsPtiY3WugTFjOcEZGTQz7jL+Hq1LohMLgtKz5ukLu4qGXZQuQqa9WeSGfD+np8b86UxVujELz9oOlbWkkGlSznwaVpxoU4ZIOdnHrPrW2MD8HDeQbdftImmHVNrTj22RVnRVs2U0GsdvxsmIWixXjuATZT/sq13W0PETKmzTYsoIQACexQKr1AOq/qqPIRoEWlMH8AO0Bg3fju+/C/+8HN/RgNlU2pKg4lB4rBbY58PsdsfqtMnr01FuX1Cc7lK4IPOsbIgVtMSJa6/sNJK6FWKIwuVSBf65vFdfuxb33JEthKpmp3Ls1qDgohl7SJl3ZqjS4XkjvY9hRF0a8IpFaxmGGR2DFStA3mgVI14LUyGtjEGTOen/2uW7CoSw/UNTU4U= 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: On Mon, Sep 18, 2023 at 12:30=E2=80=AFAM Mike Rapoport wr= ote: > [...] > + > +/** > + * enum execmem_type - types of executable memory ranges > + * > + * There are several subsystems that allocate executable memory. > + * Architectures define different restrictions on placement, > + * permissions, alignment and other parameters for memory that can be us= ed > + * by these subsystems. > + * Types in this enum identify subsystems that allocate executable memor= y > + * and let architectures define parameters for ranges suitable for > + * allocations by each subsystem. > + * > + * @EXECMEM_DEFAULT: default parameters that would be used for types tha= t > + * are not explcitly defined. > + * @EXECMEM_MODULE_TEXT: parameters for module text sections > + * @EXECMEM_KPROBES: parameters for kprobes > + * @EXECMEM_FTRACE: parameters for ftrace > + * @EXECMEM_BPF: parameters for BPF > + * @EXECMEM_TYPE_MAX: > + */ > +enum execmem_type { > + EXECMEM_DEFAULT, I found EXECMEM_DEFAULT more confusing than helpful. Song > + EXECMEM_MODULE_TEXT =3D EXECMEM_DEFAULT, > + EXECMEM_KPROBES, > + EXECMEM_FTRACE, > + EXECMEM_BPF, > + EXECMEM_TYPE_MAX, > +}; > + [...]