From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kees Cook Subject: [PATCH v3 24/29] powerpc: Move EXCEPTION_TABLE to RO_DATA segment Date: Tue, 29 Oct 2019 14:13:46 -0700 Message-ID: <20191029211351.13243-25-keescook@chromium.org> References: <20191029211351.13243-1-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=JxgXuscmNjUx+3W4Kt8O3fBFelUfO6Yk8d6Cjaqy1UI=; b=MCblW1cVSxVm2DvkZVytNDNpo7 PRBQ3Xu5fKFtzNc0umr18vUfu4TFE0nDF5NPiKHWstHFuG+XaSwtPTqmt0TGIWkR5cLHuqTgPfZ7x xmJ66eFQB7kYt9mxmg74qmNhw/he0QYLsdZIMjCIjRX8FUy3HSPPrFpeypOHr0Cu5NJJTGXu8RqW2 ZOxlZzfEiD2yq3lh2ne6C5EBxLiY1AcOFRS0eHwinep91xZI2OJuPRabwx+UI6ZWrxXq9mjgqdfSq nTCl2JzxtQQRW2JMEEgRARQnQWOPjVDgCv76RYuiGTBsO6+TcCh//8PUAc67reFzHBDHh/vqzAL1/ X3Rk8vCw==; 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=OvLPSIr20MO1GrkJ0OvwvGngd4/e51+GSaoElj9X+Gc=; b=MubpaUS4tHoReayETOIOWs+UpyMNXi3+g7N+ywDFi9zOzhpG5+ZUItxnBn6YjbZqXh paBOw3W55VS7rZu51ahUmY0fFJgtBFJYJ3pn22Ptz7nrtHG22uqdhr4XUVK2RZm1oi58 oDEHrfa53FOnH3TQxpTEFg+lMs4RonQkU3kjE= In-Reply-To: <20191029211351.13243-1-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 , linux-ia64@vger.kernel.org, Kees Cook , Arnd Bergmann , Michael Ellerman , Dave Hansen , Segher Boessenkool , linuxppc-dev@lists.ozlabs.org, Heiko Carstens , Yoshinori Sato , Andy Lutomirski , linux-alpha@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/powerpc/kernel/vmlinux.lds.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 4e7cec088c8b..8834220036a5 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -7,6 +7,7 @@ #define BSS_FIRST_SECTIONS *(.bss.prominit) #define EMITS_PT_NOTE +#define RO_EXCEPTION_TABLE_ALIGN 0 #include #include @@ -162,7 +163,6 @@ SECTIONS __stop__btb_flush_fixup = .; } #endif - EXCEPTION_TABLE(0) /* * Init sections discarded at runtime -- 2.17.1