From patchwork Mon Apr 22 08:47:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13637929 X-Patchwork-Delegate: bpf@iogearbox.net Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DCE5537E7; Mon, 22 Apr 2024 08:49:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713775750; cv=none; b=AFOGkQuhnwhQ+f40+OgMaiKZ1KtO+HIXqqqMPviHUoVPAwQ5qlF9F8GSTVAdaD7B3C8bxZS0bX4U3LQz3DX1bFoMEXdYXEGbZar+32rNoDH4+BMLUBfycsK5CJmM4y9si8zg1uv4e22iv0cf3yfh5BnPqa38OVR5OVbKabyNw9o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713775750; c=relaxed/simple; bh=rAIWAHsYUw427kTFrCCQC+4mkWqWWUZB9Zh1fdelySY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P3bNskT9jLaCaXxA2FZ5VKDELJeMyWDdVxl0hNPku/JBByGBW5Le1y3tiNBRr5RRXgg/8/gxCiqZO/abloE9hJuVb+UMp6A3VoZZdquQlmzZARn/NZ2nvcCDNIE3/J1/V5GSRRShFiu9ZL+hVh9YT6nQCWBYhfoj79TPL56OEYw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dn71W4OK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dn71W4OK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4061CC4AF0E; Mon, 22 Apr 2024 08:48:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713775749; bh=rAIWAHsYUw427kTFrCCQC+4mkWqWWUZB9Zh1fdelySY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dn71W4OKd+E1jU8AOQO3vEqkED6NiiJx01MbqH7O6BhJ6ul5CWzoHVwmfA1PUzgIK SSKpbfA2M/8pGqRyM5fdHCHVDbKkL2Cjtrmo11M6nhzExDz2TxeHXHEzkpf40NxY4P dYjsztuczcVmu9C1LsjYL3hbvTcfrQxixUL5HNhC/T+qB7NtRwxqLdJdbRINKIBbE4 N1G6niXAZn35JtrVFjaECk4Sp6vRe+YX08Eg45GrlnXbyrNv0dojoYMa1K1yT8TkP6 3cbk92qOHGiqlX2X86q18VjvsOa3FtgB9mlTJMEv1W9hFwmHPX5ikgDEmFooBfN/WN XY3RRXrhX0gxw== 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 v5 09/15] riscv: extend execmem_params for generated code allocations Date: Mon, 22 Apr 2024 11:47:17 +0300 Message-ID: <20240422084717.3602332-9-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240422084717.3602332-1-rppt@kernel.org> References: <20240422084717.3602332-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net 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;