From patchwork Fri Jun 16 08:50:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13282298 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 B71EFEB64DB for ; Fri, 16 Jun 2023 08:51:43 +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=LAHj1i88HGGv1TYh38TbP7bT3lrjgjgIXHNqqiYO2r0=; b=XkTBQOqB3rSa5g hcsTOaTXaHaaogKpfRECLNgsqjJ6Vw9Zc4HHsPpKs+nbu3PS44GK4DFzvNbMFsqAIieJ7Syi/PJRM FhEToEH4itkHhidor6wrrnuRmE9maqL6/f0FqC92XaM7TkY5XjkCFmQyxp3p4faCEgvSbAAfQ0FHY QdawGck0wKzlNAwyGo8N/7z4qrWjU5ZkLRTdotFWxj0YZJFhcz95itMPRAdzo04qd43AWuhCdi0MX vaXOAawIi/Wen+mNrJzRP9+VStUkhO5dwTiiefrDM+zmUbx+pHZOn7vRz9QjjJfeJesRnS+HcKtKX HbvI44HKFm512jIsHIcA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qA5Av-00HKUG-1O; Fri, 16 Jun 2023 08:51:21 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qA5Aj-00HKMe-2O; Fri, 16 Jun 2023 08:51:12 +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 dfw.source.kernel.org (Postfix) with ESMTPS id 4422F62544; Fri, 16 Jun 2023 08:51:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 416C3C43391; Fri, 16 Jun 2023 08:50:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686905468; bh=VoOzGojCT0s2khtn9U0zehI+G2CTL85NKGZbZioHSD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KGdNi1DykOpL1nAp8YKmwUQtjmCY/GNdUrUS59wOYcF4YSeSmrHnLBQ1izkZ44N8U HHO3e+TYfMkfqi0szVbZ5zeAc9QeKHM17xDlt8OFJq0dr7xpgPizOgDUQGBudyuu82 ld7wsSBnY8+kktqR9FA0EEr8dMyJJXJ5BDD3M0xH0u+jPEYh/O9MrpHZwSiBGPLOPy 3GS8k19KoDWuq6n3hxMBwWwAyLGYUSGTMaYKta4EnO43cwBG8JuYjGTnnCo8Ak9JVZ t0m+rqOW+OVypCmxh/X1bXMy4dzCVDUgwqQdYYJYURrrYUW3z2v96C4kPFTxM8Oyco sdMiv6KioS9+Q== 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 01/12] nios2: define virtual address space for modules Date: Fri, 16 Jun 2023 11:50:27 +0300 Message-Id: <20230616085038.4121892-2-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> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230616_015109_860875_2EE38EED X-CRM114-Status: GOOD ( 14.17 ) 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)" 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 Signed-off-by: Mike Rapoport (IBM) Acked-by: Dinh Nguyen Acked-by: Song Liu --- 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 0f5c2564e9f5..0073b289c6a4 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,