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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-02-18 02:46:21 -0500
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-03-30 02:36:00 -0400
commitb407fc57b815b2016186220baabc76cc8264206e (patch)
tree29949f727af8b6c19fd689fa10f123ea84c03cb0 /arch/x86/kernel/kvm.c
parent7fd7d83d49914f03aefffba6aee09032fcd54cce (diff)
x86/paravirt: flush pending mmu updates on context switch
Impact: allow preemption during lazy mmu updates If we're in lazy mmu mode when context switching, leave lazy mmu mode, but remember the task's state in TIF_LAZY_MMU_UPDATES. When we resume the task, check this flag and re-enter lazy mmu mode if its set. This sets things up for allowing lazy mmu mode while preemptible, though that won't actually be active until the next change. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'arch/x86/kernel/kvm.c')
-rw-r--r--arch/x86/kernel/kvm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 478bca986eca..5d7f6e76b5dc 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -201,7 +201,7 @@ static void kvm_leave_lazy_mmu(void)
201 struct kvm_para_state *state = kvm_para_state(); 201 struct kvm_para_state *state = kvm_para_state();
202 202
203 mmu_queue_flush(state); 203 mmu_queue_flush(state);
204 paravirt_leave_lazy(paravirt_get_lazy_mode()); 204 paravirt_leave_lazy_mmu();
205 state->mode = paravirt_get_lazy_mode(); 205 state->mode = paravirt_get_lazy_mode();
206} 206}
207 207