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    Subject[PATCH 38/46] KVM: ia64: preserve int status through call to kvm_insert_vmm_mapping
    Date
    From: Jes Sorensen <jes@sgi.com>

    Preserve interrupt status around call to kvm_insert_vmm_mappin()
    in kvm_vcpu_pre_transition().

    Signed-off-by: Jes Sorensen <jes@sgi.com>
    Acked-by: Xiantao Zhang <xiantao.zhang@intel.com>
    Signed-off-by: Avi Kivity <avi@redhat.com>
    ---
    arch/ia64/kvm/kvm-ia64.c | 7 ++++++-
    1 files changed, 6 insertions(+), 1 deletions(-)

    diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
    index 5b868db..cf5a193 100644
    --- a/arch/ia64/kvm/kvm-ia64.c
    +++ b/arch/ia64/kvm/kvm-ia64.c
    @@ -619,6 +619,8 @@ static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)

    static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
    {
    + unsigned long psr;
    + int r;
    int cpu = smp_processor_id();

    if (vcpu->arch.last_run_cpu != cpu ||
    @@ -630,7 +632,10 @@ static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)

    vcpu->arch.host_rr6 = ia64_get_rr(RR6);
    vti_set_rr6(vcpu->arch.vmm_rr);
    - return kvm_insert_vmm_mapping(vcpu);
    + local_irq_save(psr);
    + r = kvm_insert_vmm_mapping(vcpu);
    + local_irq_restore(psr);
    + return r;
    }

    static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
    --
    1.6.0.6


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