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-rw-r--r--kernel/sched.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 08f86178aa34..0dc757246d89 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1853,6 +1853,13 @@ context_switch(struct rq *rq, struct task_struct *prev,
1853 struct mm_struct *mm = next->mm; 1853 struct mm_struct *mm = next->mm;
1854 struct mm_struct *oldmm = prev->active_mm; 1854 struct mm_struct *oldmm = prev->active_mm;
1855 1855
1856 /*
1857 * For paravirt, this is coupled with an exit in switch_to to
1858 * combine the page table reload and the switch backend into
1859 * one hypercall.
1860 */
1861 arch_enter_lazy_cpu_mode();
1862
1856 if (!mm) { 1863 if (!mm) {
1857 next->active_mm = oldmm; 1864 next->active_mm = oldmm;
1858 atomic_inc(&oldmm->mm_count); 1865 atomic_inc(&oldmm->mm_count);