From patchwork Fri Jun 16 08:50:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13282227 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 56357A925; Fri, 16 Jun 2023 08:52:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E3C5C433CD; Fri, 16 Jun 2023 08:52:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686905537; bh=QpRLaiTQjkFAZbWC8PMbwO4haV/9se+uMBjn/xjk6Eg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RXsNDUtYj249KQAhJs+wEQjCxqfjKx6/L1Un4qq+20KcffdZ1deQG8lIIT7DV+ZMq m0eHek+DKutrTD2bY61bqwx/MvyuFb7gWqbU+m6qEsiGCLCvTZ7S6qv0+x7akVCFuB hR9l1tbgw6B2t7wTqYFLvXI+KAAIhbgEWQDFcYOxbtABFlclmsFbdqgW4kmI9RoSdI zuYaQBPZBK8o2VXshwQtSE3bM0njGcW3mDpBRHQHK++MLDhg4oBdqwaVZ6MqkCYoov 3oCj/KsihjERHBpOHzrJ3ShbDZ37kQWZGW77+ZrjAOqj6IbLfSqY9c93w/m7agDClK PWUowLo8PSiqQ== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Andrew Morton , 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 v2 08/12] riscv: extend execmem_params for kprobes allocations Date: Fri, 16 Jun 2023 11:50:34 +0300 Message-Id: <20230616085038.4121892-9-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230616085038.4121892-1-rppt@kernel.org> References: <20230616085038.4121892-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Mike Rapoport (IBM)" RISC-V overrides kprobes::alloc_insn_range() to use the entire vmalloc area rather than limit the allocations to the modules area. Slightly reorder execmem_params initialization to support both 32 and 64 bit variantsi and add definition of jit area to execmem_params to support generic kprobes::alloc_insn_page(). Signed-off-by: Mike Rapoport (IBM) Acked-by: Song Liu --- arch/riscv/kernel/module.c | 16 +++++++++++++++- arch/riscv/kernel/probes/kprobes.c | 10 ---------- 2 files changed, 15 insertions(+), 11 deletions(-) diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c index ee5e04cd3f21..cca6ed4e9340 100644 --- a/arch/riscv/kernel/module.c +++ b/arch/riscv/kernel/module.c @@ -436,7 +436,7 @@ 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 = { .modules = { .text = { @@ -444,12 +444,26 @@ static struct execmem_params execmem_params = { .alignment = 1, }, }, + .jit = { + .text = { + .pgprot = PAGE_KERNEL_READ_EXEC, + .alignment = 1, + }, + }, }; struct execmem_params __init *execmem_arch_params(void) { +#ifdef CONFIG_64BIT execmem_params.modules.text.start = MODULES_VADDR; execmem_params.modules.text.end = MODULES_END; +#else + execmem_params.modules.text.start = VMALLOC_START; + execmem_params.modules.text.end = VMALLOC_END; +#endif + + execmem_params.jit.text.start = VMALLOC_START; + execmem_params.jit.text.end = VMALLOC_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) {