diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/tlb.c | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 2a5e851f2035..b2485d69f7c2 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -148,25 +148,9 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, real_prev != &init_mm); cpumask_clear_cpu(cpu, mm_cpumask(real_prev)); - /* Load per-mm CR4 state */ + /* Load per-mm CR4 and LDTR state */ load_mm_cr4(next); - -#ifdef CONFIG_MODIFY_LDT_SYSCALL - /* - * Load the LDT, if the LDT is different. - * - * It's possible that prev->context.ldt doesn't match - * the LDT register. This can happen if leave_mm(prev) - * was called and then modify_ldt changed - * prev->context.ldt but suppressed an IPI to this CPU. - * In this case, prev->context.ldt != NULL, because we - * never set context.ldt to NULL while the mm still - * exists. That means that next->context.ldt != - * prev->context.ldt, because mms never share an LDT. - */ - if (unlikely(real_prev->context.ldt != next->context.ldt)) - load_mm_ldt(next); -#endif + switch_ldt(real_prev, next); } /* |