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authorArjan van de Ven <arjan@infradead.org>2008-01-30 13:34:08 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:34:08 +0100
commitedeed30589f5defe63ce6aaae56f2b7c855e4520 (patch)
treea49736ff74dcbd3feba3c8318b204fb2165f892d /include
parentadafdf6a4e45f2d1051e10aebe13025e89dbdf6d (diff)
x86: add testcases for RODATA and NX protections/attributes
Latest update; I now have 4 NX tests, but 2 fail so they're #if 0'd. I also cleaned up the NX test code quite a bit, and got rid of the ugly exception table sorting stuff. From: Arjan van de Ven <arjan@linux.intel.com> This patch adds testcases for the CONFIG_DEBUG_RODATA configuration option as well as the NX CPU feature/mappings. Both testcases can move to tests/ once that patch gets merged into mainline. (I'm half considering moving the rodata test into mm/init.c but I'll wait with that until init.c is unified) As part of this I had to fix a not-quite-right alignment in the vmlinux.lds.h for the RODATA sections, which lead to 1 page less being marked read only. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/vmlinux.lds.h1
-rw-r--r--include/asm-x86/cacheflush.h7
2 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 76df771be585..f784d2f34149 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -184,6 +184,7 @@
VMLINUX_SYMBOL(__start___param) = .; \
*(__param) \
VMLINUX_SYMBOL(__stop___param) = .; \
+ . = ALIGN((align)); \
VMLINUX_SYMBOL(__end_rodata) = .; \
} \
. = ALIGN((align));
diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h
index 157da0206ccc..3e74aff90809 100644
--- a/include/asm-x86/cacheflush.h
+++ b/include/asm-x86/cacheflush.h
@@ -47,5 +47,12 @@ void clflush_cache_range(void *addr, int size);
#ifdef CONFIG_DEBUG_RODATA
void mark_rodata_ro(void);
#endif
+#ifdef CONFIG_DEBUG_RODATA_TEST
+void rodata_test(void);
+#else
+static inline void rodata_test(void)
+{
+}
+#endif
#endif