commit 1bcdd8548286743e1d6b3d53c96a90c6da975620
author Helge Deller <deller@parisc-linux.org> Fri Jan 13 13:21:06 2006 -0700
committer Kyle McMartin <kyle@duet.int.mcmartin.ca> Sun Jan 22 20:26:54 2006 -0500
tree b244aa416992bbd06c4153ec2c97022629826ef2
parent a2bb214dcd1db862fdb6421e21f1cff0c3535162

[PARISC] Add CONFIG_DEBUG_RODATA to protect read-only data

Add the parisc version of the "mark rodata section read only" patches.
Based on code from and Signed-off-by Arjan van de Ven
<arjan@infradead.org>, Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@muc.de>,
Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>.

Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

include/asm-parisc/pgtable.h

diff --git a/include/asm-parisc/pgtable.h b/include/asm-parisc/pgtable.h
index b455471..4e34c6b 100644
--- a/include/asm-parisc/pgtable.h
+++ b/include/asm-parisc/pgtable.h
@@ -213,7 +213,7 @@
 #define PAGE_COPY       PAGE_EXECREAD
 #define PAGE_RWX        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
 #define PAGE_KERNEL	__pgprot(_PAGE_KERNEL)
-#define PAGE_KERNEL_RO	__pgprot(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_DIRTY | _PAGE_ACCESSED)
+#define PAGE_KERNEL_RO	__pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)
 #define PAGE_KERNEL_UNC	__pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
 #define PAGE_GATEWAY    __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_GATEWAY| _PAGE_READ)
 #define PAGE_FLUSH      __pgprot(_PAGE_FLUSH)