From 9bd880a2c882d2181b1eaba0aed422cced8f0e8a Mon Sep 17 00:00:00 2001 From: Tiejun Chen Date: Wed, 23 Oct 2013 09:26:48 +0800 Subject: KVM: PPC: Book3E HV: call RECONCILE_IRQ_STATE to sync the software state Rather than calling hard_irq_disable() when we're back in C code we can just call RECONCILE_IRQ_STATE to soft disable IRQs while we're already in hard disabled state. This should be functionally equivalent to the code before, but cleaner and faster. Signed-off-by: Tiejun Chen [agraf: fix comment, commit message] Signed-off-by: Alexander Graf --- arch/powerpc/kvm/bookehv_interrupts.S | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/powerpc/kvm/bookehv_interrupts.S') diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index e8ed7d659c55..be3de1dd7bb3 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -33,6 +33,8 @@ #ifdef CONFIG_64BIT #include +#include +#include #else #include "../kernel/head_booke.h" /* for THREAD_NORMSAVE() */ #endif @@ -465,6 +467,15 @@ _GLOBAL(kvmppc_resume_host) mtspr SPRN_EPCR, r3 isync +#ifdef CONFIG_64BIT + /* + * We enter with interrupts disabled in hardware, but + * we need to call RECONCILE_IRQ_STATE to ensure + * that the software state is kept in sync. + */ + RECONCILE_IRQ_STATE(r3,r5) +#endif + /* Switch to kernel stack and jump to handler. */ PPC_LL r3, HOST_RUN(r1) mr r5, r14 /* intno */ -- cgit v1.2.1