From patchwork Mon Sep 18 07:29:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13389053 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 9FD61CD37B0 for ; Mon, 18 Sep 2023 07:31:46 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YIgUwjCxrWh6RK4Lwk58wiimuOnDq6OD3QupoXWMtSw=; b=WodaF/0VaJ+rLZ BFwOQDefEzT0yjUqfV9b1+yvyA3n0dFV+I6xNJuJlAZF5OBFQmPjL0pfgeUU7MLeh3tq9Qc3f3YlU +WV9LWxhrfEhPiTvlNl536v/uF0/DLjZKOZt3bXB+8X33CnS82Xf2Vvb2YSDB4OgpgD3Y7mWG6mSr xfw7uSawl0KpIkSiXLSoLp/lAZCmfWj68E4U+2j2AGYrq2o1smShXeTzJObSS7MmsOQyybR9Aixi3 lzqJ/mDUKVLGteVF8k7zcKoAx7yWyg3n5H69gwC5VNx52lxgJRgL8x7fgotU+zI4x0W/DbxTWrzGe AUvnOS6NyJhpH1ZD55lQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qi8jN-00EhxU-36; Mon, 18 Sep 2023 07:31:41 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qi8jI-00Ehs3-0M; Mon, 18 Sep 2023 07:31:38 +0000 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 771DBCE0CE2; Mon, 18 Sep 2023 07:31:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90D66C4160E; Mon, 18 Sep 2023 07:31:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695022292; bh=Bxy7NNRI6l4akC8Uk0JGSyZsyMn1J934EmvkFA96qyo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sUl4tcVd+CE1RIfDd+iHzBuo/TtqH+sjUX4AKoidjsBhiPE9N8u5sBFCrh0U2OnnW 02VNXIu/PasFZvJmqp4LQS/fRSyOWf9W0w4R1mThqbVlQHxfh9deE8Gen6PrybSKrA HQTfOkMmKWxzdY89y0l1tlT8/WpmYk4oOHqiKiyXMFacErx4oC2oV4nkojcJ6bpZun 9S9TLaBh1Kth+hdxlxcmXjxDVU8y/jq3PgPfSmOZxNeFoZYJdyBqlLfSCGOoTzYYQr s02+6pJi35T4N9EWcJQvWIbsw2teHNSr/sLV1vIIuBQWC8WuxxKTSKFPi24i20hJWy PMgDbwaP/8Fzw== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Andrew Morton , =?utf-8?b?QmrDtnJuIFTDtnBl?= =?utf-8?b?bA==?= , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Michael Ellerman , Mike Rapoport , Nadav Amit , "Naveen N. Rao" , Palmer Dabbelt , Puranjay Mohan , Rick Edgecombe , Russell King , Song Liu , 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 Subject: [PATCH v3 08/13] riscv: extend execmem_params for generated code allocations Date: Mon, 18 Sep 2023 10:29:50 +0300 Message-Id: <20230918072955.2507221-9-rppt@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230918072955.2507221-1-rppt@kernel.org> References: <20230918072955.2507221-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230918_003136_496179_814F2F7C X-CRM114-Status: GOOD ( 14.05 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: "Mike Rapoport (IBM)" The memory allocations for kprobes and BPF on RISC-V are not placed in the modules area and these custom allocations are implemented with overrides of alloc_insn_page() and bpf_jit_alloc_exec(). Slightly reorder execmem_params initialization to support both 32 and 64 bit variants, define EXECMEM_KPROBES and EXECMEM_BPF ranges in riscv::execmem_params and drop overrides of alloc_insn_page() and bpf_jit_alloc_exec(). Signed-off-by: Mike Rapoport (IBM) Reviewed-by: Alexandre Ghiti --- arch/riscv/kernel/module.c | 21 ++++++++++++++++++++- arch/riscv/kernel/probes/kprobes.c | 10 ---------- arch/riscv/net/bpf_jit_core.c | 13 ------------- 3 files changed, 20 insertions(+), 24 deletions(-) diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c index 343a0edfb6dd..31505ecb5c72 100644 --- a/arch/riscv/kernel/module.c +++ b/arch/riscv/kernel/module.c @@ -436,20 +436,39 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, return 0; } -#if defined(CONFIG_MMU) && defined(CONFIG_64BIT) +#ifdef CONFIG_MMU static struct execmem_params execmem_params __ro_after_init = { .ranges = { [EXECMEM_DEFAULT] = { .pgprot = PAGE_KERNEL, .alignment = 1, }, + [EXECMEM_KPROBES] = { + .pgprot = PAGE_KERNEL_READ_EXEC, + .alignment = 1, + }, + [EXECMEM_BPF] = { + .pgprot = PAGE_KERNEL, + .alignment = 1, + }, }, }; struct execmem_params __init *execmem_arch_params(void) { +#ifdef CONFIG_64BIT execmem_params.ranges[EXECMEM_DEFAULT].start = MODULES_VADDR; execmem_params.ranges[EXECMEM_DEFAULT].end = MODULES_END; +#else + execmem_params.ranges[EXECMEM_DEFAULT].start = VMALLOC_START; + execmem_params.ranges[EXECMEM_DEFAULT].end = VMALLOC_END; +#endif + + execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_START; + execmem_params.ranges[EXECMEM_KPROBES].end = VMALLOC_END; + + execmem_params.ranges[EXECMEM_BPF].start = BPF_JIT_REGION_START; + execmem_params.ranges[EXECMEM_BPF].end = BPF_JIT_REGION_END; return &execmem_params; } diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/kprobes.c index 2f08c14a933d..e64f2f3064eb 100644 --- a/arch/riscv/kernel/probes/kprobes.c +++ b/arch/riscv/kernel/probes/kprobes.c @@ -104,16 +104,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) return 0; } -#ifdef CONFIG_MMU -void *alloc_insn_page(void) -{ - return __vmalloc_node_range(PAGE_SIZE, 1, VMALLOC_START, VMALLOC_END, - GFP_KERNEL, PAGE_KERNEL_READ_EXEC, - VM_FLUSH_RESET_PERMS, NUMA_NO_NODE, - __builtin_return_address(0)); -} -#endif - /* install breakpoint in text */ void __kprobes arch_arm_kprobe(struct kprobe *p) { diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c index 7b70ccb7fec3..c8a758f0882b 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -218,19 +218,6 @@ u64 bpf_jit_alloc_exec_limit(void) return BPF_JIT_REGION_SIZE; } -void *bpf_jit_alloc_exec(unsigned long size) -{ - return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START, - BPF_JIT_REGION_END, GFP_KERNEL, - PAGE_KERNEL, 0, NUMA_NO_NODE, - __builtin_return_address(0)); -} - -void bpf_jit_free_exec(void *addr) -{ - return vfree(addr); -} - void *bpf_arch_text_copy(void *dst, void *src, size_t len) { int ret;