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x86: remove set_kernel_exec()

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The SMP trampoline always runs in real mode, so making it executable
in the page tables doesn't make much sense because it executes
before page tables are set up. That was the only user of
set_kernel_exec(). Remove set_kernel_exec().

Signed-off-by: Andi Kleen <[email protected]>
Acked-by: Jan Beulich <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Andi Kleen 2008-01-30 13:33:53 +01:00 • committed by Ingo Molnar
commit 934d15854d
3 changed files with 0 additions and 52 deletions
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12
include/asm-x86/pgtable_32.h
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@ -184,18 +184,6 @@ static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
*/
extern pte_t *lookup_address(unsigned long address, int *level);
/*
* Make a given kernel text page executable/non-executable.
* Returns the previous executability setting of that page (which
* is used to restore the previous state). Used by the SMP bootup code.
* NOTE: this is an __init function for security reasons.
*/
#ifdef CONFIG_X86_PAE
extern int set_kernel_exec(unsigned long vaddr, int enable);
#else
static inline int set_kernel_exec(unsigned long vaddr, int enable) { return 0;}
#endif
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE0) + pte_index(address))