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 BA2A4C7EE23 for ; Sun, 4 Jun 2023 18:03:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=TCR40ZYbrgh7Y9Dmf6lEV/qUymToo7CCL1N/CIgDTek=; b=gOYgK8Kub+shzn r6x112UZ4ymMHCm+ghWd48RsfT/JUWP3MCaGASZUs32BI4XYvbi44F7LnNECDa6zdq55go4gGwdwN ZOvYb0rP7ydXJihYn6FJ8KvN56Xi+wT8yz1JMP6f9Sbdg73BlLl6Qmh/q1DM0dskAjv4xIodwn7H9 sT6rZT1QdIWlwpk+GRb1r35cWe944/fXM8EKM5zoZF7mi28BVRc0Td0GiGaz+cP3emdMUqXhoJIJc I/csrccQHWubn3yvHhr+PPScZB1YDV+lkz51jGBNvUnFav52b5MXwOlvBlQbGjzQL5rN6OeXVoW0o AA75hizMWI3cflE4poKQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q5s4E-00Cf3V-0j; Sun, 04 Jun 2023 18:03:02 +0000 Received: from out-11.mta1.migadu.com ([95.215.58.11]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q5s4A-00Cf1C-37 for linux-arm-kernel@lists.infradead.org; Sun, 04 Jun 2023 18:03:00 +0000 Date: Sun, 4 Jun 2023 14:02:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1685901772; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=8eVzj7/BTcLqy7wFCwl6xnZsISP/KN6jro+z/mha3Xk=; b=PqQAVjJ04ndqRoRQANhzjXtWIXqTHWREPNCE9YGBCSItM5aGzg9r4emrFDvZxP/xuQ2bpU DTvQnUtepgxbciT5z6M6Z+EoNGC8g2gnKTdxk1x+F2TTQDaLu6DFNHuJfLzV07K3aFkiY5 e/eoFzp+TyP07cOwDSzIUjGa6eo5mqQ= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Kent Overstreet To: Song Liu Cc: Mark Rutland , Mike Rapoport , linux-kernel@vger.kernel.org, Andrew Morton , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Heiko Carstens , Helge Deller , Huacai Chen , Luis Chamberlain , Michael Ellerman , "Naveen N. Rao" , Palmer Dabbelt , 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, Puranjay Mohan Subject: Re: [PATCH 00/13] mm: jit/text allocator Message-ID: References: <20230601101257.530867-1-rppt@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230604_110259_453132_83AB0622 X-CRM114-Status: GOOD ( 11.22 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jun 02, 2023 at 11:20:58AM -0700, Song Liu wrote: > IIUC, arm64 uses VMALLOC address space for BPF programs. The reason > is each BPF program uses at least 64kB (one page) out of the 128MB > address space. Puranjay Mohan (CC'ed) is working on enabling > bpf_prog_pack for arm64. Once this work is done, multiple BPF programs > will be able to share a page. Will this improvement remove the need to > specify a different address range for BPF programs? Can we please stop working on BPF specific sub page allocation and focus on doing this in mm/? This never should have been in BPF in the first place. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel