From 934d15854d04e8ca2495d8f5698164df990d5d66 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 30 Jan 2008 13:33:53 +0100 Subject: x86: remove set_kernel_exec() 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 Acked-by: Jan Beulich Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/mm/init_32.c | 29 ----------------------------- 1 file changed, 29 deletions(-) (limited to 'arch/x86/mm') diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 08ba3a14c72..016c8ccd1d8 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -529,35 +529,6 @@ static void __init set_nx(void) } } -/* - * Enables/disables executability of a given kernel page and - * returns the previous setting. - */ -int __init set_kernel_exec(unsigned long vaddr, int enable) -{ - pte_t *pte; - int ret = 1; - int level; - - if (!nx_enabled) - goto out; - - pte = lookup_address(vaddr, &level); - BUG_ON(!pte); - - if (!pte_exec(*pte)) - ret = 0; - - if (enable) - pte->pte_high &= ~(1 << (_PAGE_BIT_NX - 32)); - else - pte->pte_high |= 1 << (_PAGE_BIT_NX - 32); - pte_update_defer(&init_mm, vaddr, pte); - __flush_tlb_all(); -out: - return ret; -} - #endif /* -- cgit v1.2.3