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| author | Arjan van de Ven <arjan@infradead.org> | 2008-01-30 13:34:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:34:08 +0100 |
| commit | edeed30589f5defe63ce6aaae56f2b7c855e4520 (patch) | |
| tree | a49736ff74dcbd3feba3c8318b204fb2165f892d /include | |
| parent | adafdf6a4e45f2d1051e10aebe13025e89dbdf6d (diff) | |
| download | linux-edeed30589f5defe63ce6aaae56f2b7c855e4520.tar.bz2 | |
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.h | 1 | ||||
| -rw-r--r-- | include/asm-x86/cacheflush.h | 7 |
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 |