From patchwork Thu Aug 26 14:11:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 12460001 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 347DEC432BE for ; Thu, 26 Aug 2021 14:17:50 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id BFBBD60E78 for ; Thu, 26 Aug 2021 14:17:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BFBBD60E78 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=mail.ustc.edu.cn Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=12gSACsLxAopZNYbHI1btBay4Ew16zKAw629SUPrLjI=; b=wJlXAOHuO8BEB8 6CXugQcTKTXmMIz4F2eC8Vi20vlb3BeOk7S1JG3DkxxExNFn3VQzorp/Mbp4JRx2TzaDzJlsAKnfW PqVoWHf8Y6dk0d+deI71AqaaELN4pCRG01n06s9LSV8LGruLSWLzD1hWLbaiRdtEZhQFENWp4WBNq PyS848qUIkbeXIyXixgHoq/j0q3C91m/Ldg11LYvSX5tIuaxveqNEklfOsPWUL/qIWXV8PTNp6xEn DZFl7ec07Wf1q0/qzS0wehJnm16XITFCrsFfFVN3otvV5rya30h1ddFoX3xiICfvHceM+E+UQwPeA uNz2FftPaYFK8G/UUAUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mJGCM-00ALmT-35; Thu, 26 Aug 2021 14:17:42 +0000 Received: from email6.ustc.edu.cn ([2001:da8:d800::8] helo=ustc.edu.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mJGCF-00ALie-MQ for linux-riscv@lists.infradead.org; Thu, 26 Aug 2021 14:17:41 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mail.ustc.edu.cn; s=dkim; h=Received:Date:From:To:Cc:Subject: Message-ID:In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=dyqgEwHabF8Up4ihFeWT3SFMT5DdXXc05B iXW6J2O7A=; b=P3vzN6Vv5HSuDDDXOMb7zW50OP3Rw807Oi9NJoZv/dkbr2rFqM U9AlEUuqtclQd+8jPu/Z5eo5p0i9CbfHwlbD/1WIg4zSRbblCdvv7o2s+pqbxp9X GCKyoYF0tdM6MQvB/b7OiF3fZqHBchXvtqt9gnQSS4dUI1ZhL6j2GyQGw= Received: from xhacker (unknown [101.86.20.15]) by newmailweb.ustc.edu.cn (Coremail) with SMTP id LkAmygBnbw99oidhLaXGAA--.14379S2; Thu, 26 Aug 2021 22:17:33 +0800 (CST) Date: Thu, 26 Aug 2021 22:11:18 +0800 From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] riscv: Move EXCEPTION_TABLE to RO_DATA segment Message-ID: <20210826221118.24be1142@xhacker> In-Reply-To: <20210826220952.77a68a9e@xhacker> References: <20210826220952.77a68a9e@xhacker> MIME-Version: 1.0 X-CM-TRANSID: LkAmygBnbw99oidhLaXGAA--.14379S2 X-Coremail-Antispam: 1UD129KBjvdXoW7GFyDAr4kJF15tr1xKFykKrg_yoWkKrg_G3 Z7Ww43WryfCw4Sva4UGw4fWr90yayrKFykZw1jvrWxWFy3Xrs0q3s5JF43A3s8CryxCrs3 AF12kr97Cr12qjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbrxYjsxI4VWDJwAYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I 6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM2 8CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0 cI8IcVCY1x0267AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z2 80aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAK zVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx 8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcVAKI48JMxAIw28IcxkI7VAKI48JMxC20s026xCa FVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_Jr Wlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j 6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Gr 0_Zr1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUv cSsGvfC2KfnxnUUI43ZEXa7IU8DxhJUUUUU== X-CM-SenderInfo: xmv2xttqjtqzxdloh3xvwfhvlgxou0/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210826_071736_216141_D6D6AC0C X-CRM114-Status: UNSURE ( 9.28 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Jisheng Zhang _ex_table section is read-only, so move it to RO_DATA. Signed-off-by: Jisheng Zhang --- arch/riscv/kernel/vmlinux-xip.lds.S | 1 - arch/riscv/kernel/vmlinux.lds.S | 4 ++-- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S index af776555ded9..9c9f35091ef0 100644 --- a/arch/riscv/kernel/vmlinux-xip.lds.S +++ b/arch/riscv/kernel/vmlinux-xip.lds.S @@ -121,7 +121,6 @@ SECTIONS } BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0) - EXCEPTION_TABLE(0x10) .rel.dyn : AT(ADDR(.rel.dyn) - LOAD_OFFSET) { *(.rel.dyn*) diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S index 502d0826ecb1..5104f3a871e3 100644 --- a/arch/riscv/kernel/vmlinux.lds.S +++ b/arch/riscv/kernel/vmlinux.lds.S @@ -4,6 +4,8 @@ * Copyright (C) 2017 SiFive */ +#define RO_EXCEPTION_TABLE_ALIGN 16 + #ifdef CONFIG_XIP_KERNEL #include "vmlinux-xip.lds.S" #else @@ -112,8 +114,6 @@ SECTIONS *(.srodata*) } - EXCEPTION_TABLE(0x10) - . = ALIGN(SECTION_ALIGN); _data = .;