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 <tiejun.chen@windriver.com> [agraf: fix comment, commit message] Signed-off-by: Alexander Graf <agraf@suse.de>
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@ -879,17 +879,6 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
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int s;
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int idx;
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#ifdef CONFIG_PPC64
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WARN_ON(local_paca->irq_happened != 0);
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#endif
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/*
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* We enter with interrupts disabled in hardware, but
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* we need to call hard_irq_disable anyway to ensure that
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* the software state is kept in sync.
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*/
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hard_irq_disable();
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/* update before a new last_exit_type is rewritten */
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kvmppc_update_timing_stats(vcpu);
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@ -33,6 +33,8 @@
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#ifdef CONFIG_64BIT
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#include <asm/exception-64e.h>
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#include <asm/hw_irq.h>
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#include <asm/irqflags.h>
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#else
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#include "../kernel/head_booke.h" /* for THREAD_NORMSAVE() */
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#endif
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@ -465,6 +467,15 @@ _GLOBAL(kvmppc_resume_host)
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mtspr SPRN_EPCR, r3
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isync
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#ifdef CONFIG_64BIT
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/*
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* We enter with interrupts disabled in hardware, but
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* we need to call RECONCILE_IRQ_STATE to ensure
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* that the software state is kept in sync.
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*/
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RECONCILE_IRQ_STATE(r3,r5)
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#endif
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/* Switch to kernel stack and jump to handler. */
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PPC_LL r3, HOST_RUN(r1)
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mr r5, r14 /* intno */
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