From patchwork Sun Oct 28 13:09:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changbin Du X-Patchwork-Id: 10658613 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B29671751 for ; Sun, 28 Oct 2018 13:10:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A1C4D29D84 for ; Sun, 28 Oct 2018 13:10:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9FD0129D48; Sun, 28 Oct 2018 13:10:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4CC4429DA1 for ; Sun, 28 Oct 2018 13:10:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727723AbeJ1VzK (ORCPT ); Sun, 28 Oct 2018 17:55:10 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:42512 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726548AbeJ1VzJ (ORCPT ); Sun, 28 Oct 2018 17:55:09 -0400 Received: by mail-pl1-f193.google.com with SMTP id t6-v6so2522519plo.9; Sun, 28 Oct 2018 06:10:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Kpqpa9BZU+OQvUZEt5EjgcpLDGJ7LYzg33W/0iJP1IU=; b=GzZBW3iQRzy1++L2+rMly7s+XGO5sCf2vm2L80QHemKPNXtqraC4vZZ78TMuSVzlmV EK9B4sQzrNxqG7VfdNIWBFWkVWe/YiE0MrGGSuMAZX2LdWFOCfQVy06ZLXD+LQG2w81n BqDeA1KNTRBenQCn1rsGJm3nQHDvPzcY4osxub8JEa5qgqe3MkswskHz1DL0vEAAL1Fa rEOp850CBTZClZ15ATK3l0PFz/AnpNlygwcDe//XCybQ9AgP3OX1ZnPhYya17m8JCTEF CM+JPtT32FzyNpTawHK/WQ+nBQFYWyd+8hQT0xDOPix/EJ0kl+9x4qGk0EYSd1zjq09d oWXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Kpqpa9BZU+OQvUZEt5EjgcpLDGJ7LYzg33W/0iJP1IU=; b=QyabcIT4bdiAlYN1K+B1tK2iJxThgnOjPPEDAdHuQGv+Ii72T4fS9rZ+uOrIYVH/lQ ADESQSDg06F8C3gu6Lt1/rLg+ig7d+jBItj5G4oH3EpbNeEaI2zAHyKvujQZmFtSQRhE XLgRK5soRoWE8Y7KcpuFYjyJyeZ7mvdKoBgaZaiE7HYfNg3LsrIrMHRSXhPWzaTkzHbZ zMm1QrCBC7By/EM5qG3BdA1r3jXtiPiLwjUkRHJa6IrPymvmTsIHXhJErBHOMC0K4AZ+ 8CX07UenqET/7CuvsBodDn50i05Nk7nMBHeoKIIwK8rBvm9vrzb4P/QE4F0ugtjs5XTC L6sw== X-Gm-Message-State: AGRZ1gJ4f9ORrdF0f1f7FguQUYMGPH+TSvjJmwBKSbpTTvE1BLBywa7i 2SPTJqnIhncTXk/c+mTNoKQ= X-Google-Smtp-Source: AJdET5cpZ64yhtGBXP9CJqPAYJ3I+V+dhlwUfEuT7gKrAtWFQu4MGKpcSsX18AOmD+ciiU5xq6IHLQ== X-Received: by 2002:a17:902:9a07:: with SMTP id v7-v6mr10240898plp.14.1540732233035; Sun, 28 Oct 2018 06:10:33 -0700 (PDT) Received: from vultr.guest ([2001:19f0:6001:4ff6:5400:1ff:feb7:a195]) by smtp.gmail.com with ESMTPSA id e3-v6sm24520585pgc.71.2018.10.28.06.10.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 28 Oct 2018 06:10:32 -0700 (PDT) From: Changbin Du To: yamada.masahiro@socionext.com, michal.lkml@markovi.net, tglx@linutronix.de, mingo@redhat.com, linux@armlinux.org.uk, akpm@linux-foundation.org, gregkh@linuxfoundation.org Cc: rostedt@goodmis.org, x86@kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sparse@vger.kernel.org, robin.murphy@arm.com, Changbin Du Subject: [PATCH v3 3/4] ARM: mm: fix build error in fix_to_virt with CONFIG_CC_OPTIMIZE_FOR_DEBUGGING Date: Sun, 28 Oct 2018 13:09:44 +0000 Message-Id: <20181028130945.23581-4-changbin.du@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181028130945.23581-1-changbin.du@gmail.com> References: <20181028130945.23581-1-changbin.du@gmail.com> Sender: linux-sparse-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sparse@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP With '-Og' optimization level, GCC would not optimize a count for a loop as a constant value. But BUILD_BUG_ON() only accept compile-time constant values. Let's use __fix_to_virt() to avoid the error. arch/arm/mm/mmu.o: In function `fix_to_virt': /home/changbin/work/linux/./include/asm-generic/fixmap.h:31: undefined reference to `__compiletime_assert_31' Makefile:1051: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 Signed-off-by: Changbin Du Acked-by: Steven Rostedt (VMware) --- arch/arm/mm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index e46a6a446cdd..c08d74e76714 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1599,7 +1599,7 @@ static void __init early_fixmap_shutdown(void) pte_t *pte; struct map_desc map; - map.virtual = fix_to_virt(i); + map.virtual = __fix_to_virt(i); pte = pte_offset_early_fixmap(pmd_off_k(map.virtual), map.virtual); /* Only i/o device mappings are supported ATM */