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    Subject[PATCH 11/15] KVM: Add a special exit reason when exiting due to an interrupt
    Date
    This is redundant, as we also return -EINTR from the ioctl, but it
    allows us to examine the exit_reason field on resume without seeing
    old data.

    Signed-off-by: Avi Kivity <avi@qumranet.com>
    ---
    drivers/kvm/svm.c | 2 ++
    drivers/kvm/vmx.c | 2 ++
    include/linux/kvm.h | 3 ++-
    3 files changed, 6 insertions(+), 1 deletions(-)

    diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
    index b09928f..0311665 100644
    --- a/drivers/kvm/svm.c
    +++ b/drivers/kvm/svm.c
    @@ -1619,12 +1619,14 @@ again:
    if (signal_pending(current)) {
    ++kvm_stat.signal_exits;
    post_kvm_run_save(vcpu, kvm_run);
    + kvm_run->exit_reason = KVM_EXIT_INTR;
    return -EINTR;
    }

    if (dm_request_for_irq_injection(vcpu, kvm_run)) {
    ++kvm_stat.request_irq_exits;
    post_kvm_run_save(vcpu, kvm_run);
    + kvm_run->exit_reason = KVM_EXIT_INTR;
    return -EINTR;
    }
    kvm_resched(vcpu);
    diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
    index ba7a98b..0d1c8cf 100644
    --- a/drivers/kvm/vmx.c
    +++ b/drivers/kvm/vmx.c
    @@ -1936,12 +1936,14 @@ again:
    if (signal_pending(current)) {
    ++kvm_stat.signal_exits;
    post_kvm_run_save(vcpu, kvm_run);
    + kvm_run->exit_reason = KVM_EXIT_INTR;
    return -EINTR;
    }

    if (dm_request_for_irq_injection(vcpu, kvm_run)) {
    ++kvm_stat.request_irq_exits;
    post_kvm_run_save(vcpu, kvm_run);
    + kvm_run->exit_reason = KVM_EXIT_INTR;
    return -EINTR;
    }

    diff --git a/include/linux/kvm.h b/include/linux/kvm.h
    index 57f47ef..b3af92e 100644
    --- a/include/linux/kvm.h
    +++ b/include/linux/kvm.h
    @@ -11,7 +11,7 @@
    #include <asm/types.h>
    #include <linux/ioctl.h>

    -#define KVM_API_VERSION 8
    +#define KVM_API_VERSION 9

    /*
    * Architectural interrupt line count, and the size of the bitmap needed
    @@ -45,6 +45,7 @@ enum kvm_exit_reason {
    KVM_EXIT_IRQ_WINDOW_OPEN = 7,
    KVM_EXIT_SHUTDOWN = 8,
    KVM_EXIT_FAIL_ENTRY = 9,
    + KVM_EXIT_INTR = 10,
    };

    /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
    --
    1.5.0.2
    -
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