linux-kernel - [PATCH 06/29] s390: Move RO_DATA into "text" PT

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Date:   Thu, 26 Sep 2019 10:55:39 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Kees Cook <keescook@...omium.org>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-alpha@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-s390@...r.kernel.org,
        linux-c6x-dev@...ux-c6x.org,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Michal Simek <monstr@...str.eu>, linux-parisc@...r.kernel.org,
        linux-xtensa@...ux-xtensa.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 06/29] s390: Move RO_DATA into "text" PT_LOAD Program Header

In preparation for moving NOTES into RO_DATA, this moves RO_DATA back
into the "text" PT_LOAD Program Header, as done with other
architectures. The "data" PT_LOAD now starts with the writable data
section.

Signed-off-by: Kees Cook <keescook@...omium.org>
---
 arch/s390/kernel/vmlinux.lds.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 7e0eb4020917..13294fef473e 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -52,7 +52,7 @@ SECTIONS
 
 	NOTES :text :note
 
-	.dummy : { *(.dummy) } :data
+	.dummy : { *(.dummy) } :text
 
 	RO_DATA_SECTION(PAGE_SIZE)
 
@@ -64,7 +64,7 @@ SECTIONS
 	.data..ro_after_init : {
 		 *(.data..ro_after_init)
 		JUMP_TABLE_DATA
-	}
+	} :data
 	EXCEPTION_TABLE(16)
 	. = ALIGN(PAGE_SIZE);
 	__end_ro_after_init = .;
-- 
2.17.1