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kvm/ppc/booke64: Fix lazy ee handling in kvmppc_handle_exit() 

EE is hard-disabled on entry to kvmppc_handle_exit(), so call
hard_irq_disable() so that PACA_IRQ_HARD_DIS is set, and soft_enabled
is unset.

Without this, we get warnings such as arch/powerpc/kernel/time.c:300,
and sometimes host kernel hangs.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Scott Wood 2013-06-06 19:16:32 -05:00 committed by Gleb Natapov
parent f1e89028f0
commit 7c11c0ccc7
1 changed files with 11 additions and 0 deletions
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11
arch/powerpc/kvm/booke.c
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@ -834,6 +834,17 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
int s;
int idx;
#ifdef CONFIG_PPC64
WARN_ON(local_paca->irq_happened != 0);
#endif
/*
* We enter with interrupts disabled in hardware, but
* we need to call hard_irq_disable anyway to ensure that
* the software state is kept in sync.
*/
hard_irq_disable();
/* update before a new last_exit_type is rewritten */
kvmppc_update_timing_stats(vcpu);