From patchwork Mon Apr 22 08:47:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13637955 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 D604353E25; Mon, 22 Apr 2024 08:48:00 +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=1713775681; cv=none; b=pEzWm1ZhfJieNt8aRZ/5v5EcjrVeoe5WMdWEVzO4bvTQ3YZQGKtIim59cpKkr0dpJM2wXVvMfzlgA9UtoJ+Uujm7jnQ6GaLoXZ+as94wSRM3Hajumq1g4w+yIVJTJ6RU9120upUfIyj0T3QsYe3DKkN8nHK7NIg3x0USbx/U6y8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713775681; c=relaxed/simple; bh=Q5aCDGAMhe9LWjmBOe0KfqvsLthVcLCeaQ3ItO7ykso=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W1oJ20lrFKl4/eubuGm8T5VMiwoP+DFK2im2XZCrbxX7+JHxEoCwbNI4V3FO1Jtsy/JH/SQtFc2l/SqO3NDl04b+TWTsc4C4+9D7nmrT7whc6tw7Ex15nO/WwLK9/87W+Svv0GgsYQwsu5a67CbOQOwcm1av2d+QZOwezMFn1GA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tqjGhLma; 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="tqjGhLma" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FFB7C113CC; Mon, 22 Apr 2024 08:47:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713775680; bh=Q5aCDGAMhe9LWjmBOe0KfqvsLthVcLCeaQ3ItO7ykso=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tqjGhLmakj38qK7RgDjyBqXPIqmgUHctAJPuYLPYWfWlTQVzsz3Yv8bD9x5dI6Hnl zH4N1rZua3kKmp5Z9FTzzOnBDCkE6NkLQqo4SEXw8+hGJksLAPX+KPiTIYWYFcJ7aC NPF5rVfWqZE6OIc3RPkBGBu5CGvszUuUXO+9b2gFLqXc+3J3h1lSPne2TIenVv8BPH BhGnGacMV/GoI70AjaFFGfEWSKb3U7DqMgHV8L7lS8SLOZ7WSffFwUvy94mkdeCGPR 0yrZJ28u6aSN34J0ggfPqpKCgrNlu3cA3W008IMoUdJlKQ3f8tdajrnX4H1n0K2SKJ BnX44JYZzOV+w== 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 03/15] nios2: define virtual address space for modules Date: Mon, 22 Apr 2024 11:47:11 +0300 Message-ID: <20240422084717.3602332-3-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: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Mike Rapoport (IBM)" nios2 uses kmalloc() to implement module_alloc() because CALL26/PCREL26 cannot reach all of vmalloc address space. Define module space as 32MiB below the kernel base and switch nios2 to use vmalloc for module allocations. Suggested-by: Thomas Gleixner Acked-by: Dinh Nguyen Acked-by: Song Liu Signed-off-by: Mike Rapoport (IBM) --- arch/nios2/include/asm/pgtable.h | 5 ++++- arch/nios2/kernel/module.c | 19 ++++--------------- 2 files changed, 8 insertions(+), 16 deletions(-) diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h index d052dfcbe8d3..eab87c6beacb 100644 --- a/arch/nios2/include/asm/pgtable.h +++ b/arch/nios2/include/asm/pgtable.h @@ -25,7 +25,10 @@ #include #define VMALLOC_START CONFIG_NIOS2_KERNEL_MMU_REGION_BASE -#define VMALLOC_END (CONFIG_NIOS2_KERNEL_REGION_BASE - 1) +#define VMALLOC_END (CONFIG_NIOS2_KERNEL_REGION_BASE - SZ_32M - 1) + +#define MODULES_VADDR (CONFIG_NIOS2_KERNEL_REGION_BASE - SZ_32M) +#define MODULES_END (CONFIG_NIOS2_KERNEL_REGION_BASE - 1) struct mm_struct; diff --git a/arch/nios2/kernel/module.c b/arch/nios2/kernel/module.c index 76e0a42d6e36..9c97b7513853 100644 --- a/arch/nios2/kernel/module.c +++ b/arch/nios2/kernel/module.c @@ -21,23 +21,12 @@ #include -/* - * Modules should NOT be allocated with kmalloc for (obvious) reasons. - * But we do it for now to avoid relocation issues. CALL26/PCREL26 cannot reach - * from 0x80000000 (vmalloc area) to 0xc00000000 (kernel) (kmalloc returns - * addresses in 0xc0000000) - */ void *module_alloc(unsigned long size) { - if (size == 0) - return NULL; - return kmalloc(size, GFP_KERNEL); -} - -/* Free memory returned from module_alloc */ -void module_memfree(void *module_region) -{ - kfree(module_region); + return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, + GFP_KERNEL, PAGE_KERNEL_EXEC, + VM_FLUSH_RESET_PERMS, NUMA_NO_NODE, + __builtin_return_address(0)); } int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,