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 208A4C4345F for ; Mon, 15 Apr 2024 09:37:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9E3336B00A1; Mon, 15 Apr 2024 05:37:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 96C246B00A3; Mon, 15 Apr 2024 05:37:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 834386B00A4; Mon, 15 Apr 2024 05:37:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 5FEBF6B00A1 for ; Mon, 15 Apr 2024 05:37:20 -0400 (EDT) Received: from smtpin25.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 17C70A04A6 for ; Mon, 15 Apr 2024 09:37:20 +0000 (UTC) X-FDA: 82011263040.25.D157C79 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf09.hostedemail.com (Postfix) with ESMTP id 04C3A14000C for ; Mon, 15 Apr 2024 09:37:16 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=WL3mGK96; dmarc=none; spf=none (imf09.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=peterz@infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1713173837; 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=gJURSN8ZhZs54MX6UPe8WS991KHmcU3CMSr/wsPBYas=; b=efJ9U0dX/doDfItBn0XKmJpcGUSwihAooA5ACWDvxn9tjtjfbWI2EgqrGXzncBTEJnkTVz 8T6jKVjCCd6wU10Ps2qVH6BrId+866zMA1oaAjd0CyA5G7i2iQ8fQ5MZOatU1fnU0xp2dQ hKboQ9FpF0rlRN8oiEQiqZNLbXcav1I= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=WL3mGK96; dmarc=none; spf=none (imf09.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=peterz@infradead.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1713173837; a=rsa-sha256; cv=none; b=wTtXObtXoQSkGvVBr0o8q/cRasAVAj6BtU4xBdfw2b3pxGlcP5Hkoyd1DGKZFsa53MNLVk F39j1jFu7VyIWfQ1wxeB8ZKhgfaixKDxdzZuhe0YPogCEF9I30nb+oR1uUXBzCW+mf32Op QubE6ycnmlT3CcDO9AI3yQomR9iojjc= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=gJURSN8ZhZs54MX6UPe8WS991KHmcU3CMSr/wsPBYas=; b=WL3mGK96b4dqocWg2WT6S+o3Lh 6R4hcBA6RfcHuQQK7isTyMyXCwDos8Q1HdHKBvnc80dazhTsMKZZh+HOA+2p3MytoMgm0z79fe1lO 6VNzmYAbfQ0K4rY/gTJDrpu5Cj+twK8P8H6r2xTaYF5wANkZ19gJAqZM8x7uwfcFkyoEWlipCNTWk 6fylSl1gmglon4eNg+zb/yC04zTO/2Lfq8d+LNZPMMi03er3jB/2uzdVHk4Db9ls69FN+sjSeErGv ir1OIAWRPD8gvlVd9eQwbdsiTncbhidLvva928W/3FSV8BR+sXBV2NxpcV2Vc46i56RkcJA4zwnpr gpLaCNRw==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1rwIlk-0000000FOjV-0IDN; Mon, 15 Apr 2024 09:36:56 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id B1DC030040C; Mon, 15 Apr 2024 11:36:55 +0200 (CEST) Date: Mon, 15 Apr 2024 11:36:55 +0200 From: Peter Zijlstra To: Mike Rapoport Cc: linux-kernel@vger.kernel.org, Alexandre Ghiti , Andrew Morton , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Donald Dutile , Eric Chanudet , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Michael Ellerman , Nadav Amit , Palmer Dabbelt , Puranjay Mohan , Rick Edgecombe , Russell King , Song Liu , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Will Deacon , bpf@vger.kernel.org, linux-arch@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 Subject: Re: [PATCH v4 07/15] mm/execmem, arch: convert remaining overrides of module_alloc to execmem Message-ID: <20240415093655.GH40213@noisy.programming.kicks-ass.net> References: <20240411160051.2093261-1-rppt@kernel.org> <20240411160051.2093261-8-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240411160051.2093261-8-rppt@kernel.org> X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 04C3A14000C X-Stat-Signature: 9giqwuzhipfcrcr4j4ej4f9rbddbqq7x X-Rspam-User: X-HE-Tag: 1713173836-691322 X-HE-Meta: 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 iH5edLo0 /Pq5toNy4P6uVjT/3Nmc/7boSUmhR8p1kGpSRsuuNaG9uqhLwejbrF6/jL4AMBgVzsu13v+1WSs6Ix/zVFyfTWYOc30zuiOXJLfsvDccdSqMIZYN1UbwsVwGJzxeAuW8xFVfVXuvrrJPr27gzx31OuZu8bI7RuogPbZ7cVqYO4aFLz3HvUuLeaXR5k+aJKuzwTUeSrOqNNaCIoY5LsGpHyHfrNzBXRqdLLbWjpNMivUfZGS/laKhcqZLKYQgpZNd4x8qn 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 Thu, Apr 11, 2024 at 07:00:43PM +0300, Mike Rapoport wrote: > +static struct execmem_info execmem_info __ro_after_init = { > + .ranges = { > + [EXECMEM_DEFAULT] = { > + .flags = EXECMEM_KASAN_SHADOW, > + .alignment = MODULE_ALIGN, > + }, > + }, > +}; > > +struct execmem_info __init *execmem_arch_setup(void) > { > + unsigned long start, offset = 0; > > + if (kaslr_enabled()) > + offset = get_random_u32_inclusive(1, 1024) * PAGE_SIZE; > > + start = MODULES_VADDR + offset; > + execmem_info.ranges[EXECMEM_DEFAULT].start = start; > + execmem_info.ranges[EXECMEM_DEFAULT].end = MODULES_END; > + execmem_info.ranges[EXECMEM_DEFAULT].pgprot = PAGE_KERNEL; > > + return &execmem_info; > } struct execmem_info __init *execmem_arch_setup(void) { unsigned long offset = 0; if (kaslr_enabled()) offset = get_random_u32_inclusive(1, 1024) * PAGE_SIZE; execmem_info = (struct execmem_info){ .ranges = { [EXECMEM_DEFAULT] = { .start = MODULES_VADDR + offset, .end = MODULES_END, .pgprot = PAGE_KERNEL, .flags = EXECMEM_KASAN_SHADOW, .alignment = 1, }, }, }; return &execmem_info; }