From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kees Cook Subject: [PATCH v2 25/29] xtensa: Move EXCEPTION_TABLE to RO_DATA segment Date: Thu, 10 Oct 2019 17:06:05 -0700 Message-ID: <20191011000609.29728-26-keescook@chromium.org> References: <20191011000609.29728-1-keescook@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=5KtzDiIAA94ebvgZWkQWwr2KPMax8EyWWAf658FUN6g=; b=crNQYlpSJxdA7AL6unQq3yjn2i mnk4u3Kxbpf8OR1ozjQGfxTxH0hi1YeGnKuVEaqR5wYqAaBQpl9qC07kiyE7c4LZlEILkUE9IGo/W /IK+WYZT3noFlH2XA28eWOt2BDp4fx7bNE+NIZdXYNWJs955eSQvSWW8rXLfLaNbH0lWem4sGIGWU I2uIWB4B4eLjMs+rGnd8Kz9rYqlUYyS6mnSEvbXz6S67hohdaOm0311Ol9HIiGaMHBk0tGoOVEI2K m+aU+91xYzYRBE+OOkVlgJAUTYz+YMTawitFWR3aK7zGezVsPzyH9A+qw7AG8LY/lMRcdbsFWddpi 8YXtEJtg==; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=aXC4EKkSKWAzbgJ5UkNW5ASNd77O0uNGfoVDwB8PV7o=; b=QKMy1WMIao8eo2h9Q1TmJ+NvwxmYIJS5BiRFvnKXyWnyHt2NVU1sSJRyaYkSK0bnTI 3g26hGi2M+7oPqpQxxO8mfA0+ckl3W/NOZq89OJYBy8zqpl256YQ/kRKmZl3wcK/Al8o WR97u6SnuI6udJBDDM4eXoslNY2BMQS6h8HHA= In-Reply-To: <20191011000609.29728-1-keescook@chromium.org> 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=m.gmane.org@lists.infradead.org To: Borislav Petkov Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Michal Simek , x86@kernel.org, linux-ia64@vger.kernel.org, Kees Cook , Arnd Bergmann , linux-xtensa@linux-xtensa.org, Michael Ellerman , Dave Hansen , Heiko Carstens , linuxppc-dev@lists.ozlabs.org, Yoshinori Sato , linux-parisc@vger.kernel.org, Andy Lutomirski , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, Rick Edgecombe , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA. Signed-off-by: Kees Cook --- arch/xtensa/kernel/vmlinux.lds.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index bdbd7c4056c1..0043d5858f14 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -14,6 +14,8 @@ * Joe Taylor */ +#define RO_EXCEPTION_TABLE_ALIGN 16 + #include #include #include @@ -130,7 +132,6 @@ SECTIONS .fixup : { *(.fixup) } - EXCEPTION_TABLE(16) /* Data section */ _sdata = .; -- 2.17.1