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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 59291C5321D for ; Mon, 26 Aug 2024 07:34:40 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Wsj9q0Ry1z2yGf; Mon, 26 Aug 2024 17:34:39 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=147.75.193.91 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1724655484; cv=none; b=hd9Iaui3v+AhNoZ1q5OrTOIMxeEjXQqs5rmTARTsDQjA3lU0qqKu2EUQS68xwVrDfk6+tDFHBJW4Dtwx/iWQBiQ9MjpS88EpiealRTM0YN8I6f1SiUSi5wtm7fJQF01dt31rJUnaqHRz365mzxaJFULW7T+JKj/1khdG1boqY6yfhSr/PmKoj0bv573ODXVkO+kDc9gYd2NIFCgj8APcTMx5pp5e77b/4JGXXMxlpifwkMkMlLCCwAu2ggu/Lj3Bt2tdO2UwNGSuJ/WsnkdLIrpOjMxGSQx/4opPsZ7pFkJK4rO8K9AZ5/Z57T66wMMIyBHaZOthbUSbumg/1pFTLw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1724655484; c=relaxed/relaxed; bh=pivIpmPrEiNkGS0zm1hicx+P3hpfRXHzQg0zuVaSO98=; h=Received:Received:DKIM-Signature:From:To:Cc:Subject:Date: Message-ID:X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; b=nxNd5qbULF2HNFRoXv3iyQM2Zx31xtmEeMlwy2kQv4XlN9oWnaRdPzEHw8YuQrU5N8WWPMyqZAWUy/pCrY7jnOTRbOOP5Gwn880YURZZB1ZPN83ugS65RD9q8rOmtebLMcHUAXssWatG/3ckcynlF2BSx6BqND/wq2bLjkn1PDzKkUEW27dGntxYl8png9UOYTmKzyXv64Hpa6rze1VXcG5XPcEfMoGMA+DxKjJIF8QvL8rn7a2uzNzToRWp8IHIcsgOQRz+W1uWK9/Ep6b9hkR0M1zWRMzyY/JMBOq4GW6Zq2OWMB0gK3BFdmqVr6V2aJbrGClUs+ai+HsTzojSNA== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=u9brm9ff; dkim-atps=neutral; spf=pass (client-ip=147.75.193.91; helo=nyc.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=u9brm9ff; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=147.75.193.91; helo=nyc.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WshMb45Vwz2y8p for ; Mon, 26 Aug 2024 16:58:03 +1000 (AEST) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 40DF9A41190; Mon, 26 Aug 2024 06:57:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F0D5C567EB; Mon, 26 Aug 2024 06:57:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724655475; bh=l7egSUNcilONf7gTBq0Hjl37ut+S55vwboWjXSdFWe0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u9brm9ffBKJJy0lQBqVUmOtRsmRW1o2mBFKA4EhD7/nH8h2gv+M7lKVr7gSQptliB hbOarsMop4k9H3WwY7Yn4SDp1vUrBJIaGRD3L7h2LyBRLq6p3w2M+aMtu5fF8yUiOT JzgM/Mh7LerNq33JfGbB0R6dXwMiZvlBUPNF03eoh1GhN4IuDSdJxnUg45kUvxXE/S I1P3qHXaDeHHHmN8Cm9t03nsqNN6vCskEjl1NxrPzvke5fbuCG5/WnwkhujA6NhoOt p9raTRTUjWPVS0MKDT5Lhfx819pdvVyaXynnIIS3xdhWfXB7iG8JbUVNzrCj5nDxC0 KwcaUZEBkiEAw== From: Mike Rapoport To: Andrew Morton Cc: Andreas Larsson , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Brian Cain , Catalin Marinas , Christoph Hellwig , Christophe Leroy , Dave Hansen , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Kent Overstreet , "Liam R. Howlett" , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Mike Rapoport , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Song Liu , Stafford Horne , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v2 8/8] x86/module: enable ROX caches for module text Date: Mon, 26 Aug 2024 09:55:32 +0300 Message-ID: <20240826065532.2618273-9-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240826065532.2618273-1-rppt@kernel.org> References: <20240826065532.2618273-1-rppt@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Post: List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" Enable execmem's cache of PMD_SIZE'ed pages mapped as ROX for module text allocations. Signed-off-by: Mike Rapoport (Microsoft) --- arch/x86/mm/init.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index eb503f53c319..a0ec99fb9385 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -1053,6 +1053,15 @@ unsigned long arch_max_swapfile_size(void) #ifdef CONFIG_EXECMEM static struct execmem_info execmem_info __ro_after_init; +static void execmem_fill_trapping_insns(void *ptr, size_t size, bool writeable) +{ + /* fill memory with INT3 instructions */ + if (writeable) + memset(ptr, INT3_INSN_OPCODE, size); + else + text_poke_set(ptr, INT3_INSN_OPCODE, size); +} + struct execmem_info __init *execmem_arch_setup(void) { unsigned long start, offset = 0; @@ -1063,8 +1072,23 @@ struct execmem_info __init *execmem_arch_setup(void) start = MODULES_VADDR + offset; execmem_info = (struct execmem_info){ + .fill_trapping_insns = execmem_fill_trapping_insns, .ranges = { - [EXECMEM_DEFAULT] = { + [EXECMEM_MODULE_TEXT] = { + .flags = EXECMEM_KASAN_SHADOW | EXECMEM_ROX_CACHE, + .start = start, + .end = MODULES_END, + .pgprot = PAGE_KERNEL_ROX, + .alignment = MODULE_ALIGN, + }, + [EXECMEM_KPROBES ... EXECMEM_BPF] = { + .flags = EXECMEM_KASAN_SHADOW, + .start = start, + .end = MODULES_END, + .pgprot = PAGE_KERNEL, + .alignment = MODULE_ALIGN, + }, + [EXECMEM_MODULE_DATA] = { .flags = EXECMEM_KASAN_SHADOW, .start = start, .end = MODULES_END, -- 2.43.0