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Date: Wed, 9 Dec 2015 13:43:17 -0800
From: Kees Cook <keescook@...omium.org>
To: linux-kernel@...r.kernel.org
Cc: Kees Cook <keescook@...omium.org>, Russell King <linux@....linux.org.uk>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
"James E.J. Bottomley" <jejb@...isc-linux.org>,
Ingo Molnar <mingo@...hat.com>, Andy Lutomirski <luto@...capital.net>,
"H. Peter Anvin" <hpa@...or.com>,
Michael Ellerman <mpe@...erman.id.au>,
Mathias Krause <minipli@...glemail.com>,
Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
Arnd Bergmann <arnd@...db.de>, PaX Team <pageexec@...email.hu>,
Emese Revfy <re.emese@...il.com>, kernel-hardening@...ts.openwall.com,
linux-arch <linux-arch@...r.kernel.org>
Subject: [PATCH v3 1/8] asm-generic: consolidate mark_rodata_ro()
Instead of defining mark_rodata_ro() in each architecture, consolidate it.
Signed-off-by: Kees Cook <keescook@...omium.org>
Cc: Russell King <linux@....linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: "James E.J. Bottomley" <jejb@...isc-linux.org>
---
arch/arm/include/asm/cacheflush.h | 1 -
arch/arm64/include/asm/cacheflush.h | 4 ----
arch/parisc/include/asm/cacheflush.h | 4 ----
arch/x86/include/asm/cacheflush.h | 1 -
include/asm-generic/cacheflush.h | 4 ++++
5 files changed, 4 insertions(+), 10 deletions(-)
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index d5525bfc7e3e..9156fc303afd 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -491,7 +491,6 @@ static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
#endif
#ifdef CONFIG_DEBUG_RODATA
-void mark_rodata_ro(void);
void set_kernel_text_rw(void);
void set_kernel_text_ro(void);
#else
diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h
index 54efedaf331f..ca3b7841e1c6 100644
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -155,8 +155,4 @@ int set_memory_rw(unsigned long addr, int numpages);
int set_memory_x(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);
-#ifdef CONFIG_DEBUG_RODATA
-void mark_rodata_ro(void);
-#endif
-
#endif
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index 845272ce9cc5..7bd69bd43a01 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -121,10 +121,6 @@ flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vma
}
}
-#ifdef CONFIG_DEBUG_RODATA
-void mark_rodata_ro(void);
-#endif
-
#include <asm/kmap_types.h>
#define ARCH_HAS_KMAP
diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h
index e63aa38e85fb..c8cff75c5b21 100644
--- a/arch/x86/include/asm/cacheflush.h
+++ b/arch/x86/include/asm/cacheflush.h
@@ -92,7 +92,6 @@ void clflush_cache_range(void *addr, unsigned int size);
#define mmio_flush_range(addr, size) clflush_cache_range(addr, size)
#ifdef CONFIG_DEBUG_RODATA
-void mark_rodata_ro(void);
extern const int rodata_test_data;
extern int kernel_set_to_readonly;
void set_kernel_text_rw(void);
diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h
index 87bc536ccde3..1225497ce3bf 100644
--- a/include/asm-generic/cacheflush.h
+++ b/include/asm-generic/cacheflush.h
@@ -31,4 +31,8 @@
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
+#ifdef CONFIG_DEBUG_RODATA
+void mark_rodata_ro(void);
+#endif
+
#endif /* __ASM_CACHEFLUSH_H */
--
1.9.1
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