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* x86: Explicitly include required header files.Robert P. J. Day2008-04-171-0/+2
| | | | | | | | After an experimental cleanup of <linux/percpu.h>, these files were exposed as invoking kmalloc() without including <linux/slab.h>. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: mark the .rodata section also NXArjan van de Ven2008-02-061-1/+1
| | | | | | | | | | | The .rodata section shouldn't just be read-only, but also non-executable. This is free since we've broken up the 2MB page already anyway. also update test_nx to check for this. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use _ASM_EXTABLE macro in arch/x86/kernel/test_nx.cH. Peter Anvin2008-02-041-10/+2
| | | | | | | | | Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in arch/x86/kernel/test_nx.c. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: fix arch/x86/kernel/test_nx.c modular build bugIngo Molnar2008-01-301-0/+5
| | | | | | | | | | | | | | fix this modular build bug: > CC [M] arch/x86/kernel/test_nx.o > {standard input}: Assembler messages: > {standard input}:58: Error: cannot represent relocation type BFD_RELOC_64 > {standard input}:59: Error: cannot represent relocation type BFD_RELOC_64 > make[2]: *** [arch/x86/kernel/test_nx.o] Error 1 > make[1]: *** [arch/x86/kernel] Error 2 Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add testcases for RODATA and NX protections/attributesArjan van de Ven2008-01-301-0/+176
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>