From patchwork Fri Apr 26 08:28:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13644286 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 C11E1C4345F for ; Fri, 26 Apr 2024 08:32:06 +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=1Fj4IRr9rBAcXmyYVj0esIUtbxVgqZt+tYouVduUaV0=; b=VZsCaovTIcEU1M ZEQaSLjHBFbe8vaIyQGBgjdJaytW7Svo1xDTugvIbxsyWaiZeBzVLUMfnjjqdPXD9UAECr5qSyjTI WI7L26VaC/Lql95UVLy+h7cEgZveUoXuR7KBsmCp3JIN5fPpMf/s0ypNCJ8wgYCoPmuwUg37XYK30 rSgyqcejXGhv7jBXqARbgzhfN0h/1GF41sY+/np+t/TeMnOuW5y8K3acyYwDC9jDwp3vVSih0igZV 8CgcM31WgEPVYcdyH+ANYCVYBQkoe8LF7jSIcFPhg3w0+5UQvD7MiO7BLCYzcXSZtyOjx1bdcvM7e DiUMnmpyp0FNq1fGqbrw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s0Gzn-0000000BgMj-14G9; Fri, 26 Apr 2024 08:31:51 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s0Gyt-0000000BfgK-2r4f; Fri, 26 Apr 2024 08:31:01 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id ED92562002; Fri, 26 Apr 2024 08:30:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F4F7C113CD; Fri, 26 Apr 2024 08:30:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714120254; bh=rAIWAHsYUw427kTFrCCQC+4mkWqWWUZB9Zh1fdelySY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TeunQcB9PoWap6KReLYBjiDgwQ8R6NLCJAuYMonr4uIqQ+FDsUYfn+3QUwjES0THO 1olpZ/7FEsdEfyqW/qHnL8WrRHW7bhKWVRyd1ldZENl0wFTnC2tjVvMcsRqdWxQ0NG fOgKCeODWoEr15HF0gdHFTqF7s0R11U9gt/BL+AKAUE6DNfjLjlYSoOzlK5/SA6Ir3 aeEy+WpXsNjpRuCI4xRDKAQ1U1cl9VeCvbKO1szZlW8y1ZaBEW0T55yafFLe0HfOu8 RbNw8r8Ae2+ZkPMkhxCgXpo49Tk8Ol2963PvtEdvl1QII5UPXpu+UcDH08b+AIH1Si RHTXLgzCjPOuA== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexandre Ghiti , Andrew Morton , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , 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 , Masami Hiramatsu , Michael Ellerman , Mike Rapoport , Nadav Amit , Palmer Dabbelt , Peter Zijlstra , Rick Edgecombe , Russell King , Sam Ravnborg , 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: [PATCH v6 09/16] riscv: extend execmem_params for generated code allocations Date: Fri, 26 Apr 2024 11:28:47 +0300 Message-ID: <20240426082854.7355-10-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240426082854.7355-1-rppt@kernel.org> References: <20240426082854.7355-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240426_013056_126256_290BF152 X-CRM114-Status: GOOD ( 13.49 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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 | 28 +++++++++++++++++++++++++--- arch/riscv/kernel/probes/kprobes.c | 10 ---------- arch/riscv/net/bpf_jit_core.c | 13 ------------- 3 files changed, 25 insertions(+), 26 deletions(-) diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c index 182904127ba0..2ecbacbc9993 100644 --- a/arch/riscv/kernel/module.c +++ b/arch/riscv/kernel/module.c @@ -906,19 +906,41 @@ 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_info execmem_info __ro_after_init; struct execmem_info __init *execmem_arch_setup(void) { + unsigned long start, end; + + if (IS_ENABLED(CONFIG_64BIT)) { + start = MODULES_VADDR; + end = MODULES_END; + } else { + start = VMALLOC_START; + end = VMALLOC_END; + } + execmem_info = (struct execmem_info){ .ranges = { [EXECMEM_DEFAULT] = { - .start = MODULES_VADDR, - .end = MODULES_END, + .start = start, + .end = end, .pgprot = PAGE_KERNEL, .alignment = 1, }, + [EXECMEM_KPROBES] = { + .start = VMALLOC_START, + .end = VMALLOC_END, + .pgprot = PAGE_KERNEL_READ_EXEC, + .alignment = 1, + }, + [EXECMEM_BPF] = { + .start = BPF_JIT_REGION_START, + .end = BPF_JIT_REGION_END, + .pgprot = PAGE_KERNEL, + .alignment = PAGE_SIZE, + }, }, }; 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 6b3acac30c06..e238fdbd5dbc 100644 --- a/arch/riscv/net/bpf_jit_core.c +++ b/arch/riscv/net/bpf_jit_core.c @@ -219,19 +219,6 @@ 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;