From e5e3a0428968dcc1f9318ce1c941a918e99f8b84 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 7 Dec 2006 02:14:01 +0100 Subject: [PATCH] i386: remove default_ldt, and simplify ldt-setting. This patch removes the default_ldt[] array, as it has been unused since iBCS stopped being supported. This means it is now possible to actually set an empty LDT segment. In order to deal with this, the set_ldt_desc/load_LDT pair has been replaced with a single set_ldt() operation which is responsible for both setting up the LDT descriptor in the GDT, and reloading the LDT register. If there are no LDT entries, the LDT register is loaded with a NULL descriptor. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andi Kleen Cc: Andi Kleen Acked-by: Zachary Amsden Signed-off-by: Andrew Morton --- include/asm-i386/mmu_context.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/asm-i386/mmu_context.h') diff --git a/include/asm-i386/mmu_context.h b/include/asm-i386/mmu_context.h index 62b7bf184094..1b1495372c4d 100644 --- a/include/asm-i386/mmu_context.h +++ b/include/asm-i386/mmu_context.h @@ -44,7 +44,7 @@ static inline void switch_mm(struct mm_struct *prev, * load the LDT, if the LDT is different: */ if (unlikely(prev->context.ldt != next->context.ldt)) - load_LDT_nolock(&next->context, cpu); + load_LDT_nolock(&next->context); } #ifdef CONFIG_SMP else { @@ -56,7 +56,7 @@ static inline void switch_mm(struct mm_struct *prev, * tlb flush IPI delivery. We must reload %cr3. */ load_cr3(next->pgd); - load_LDT_nolock(&next->context, cpu); + load_LDT_nolock(&next->context); } } #endif -- cgit v1.2.3