On 25/08/2015 10:50, Feng Wu wrote:
> This patch adds some helper functions to manipulate the
> Posted-Interrupts Descriptor.
>
> Signed-off-by: Feng Wu <feng.wu@xxxxxxxxx>
> ---
> arch/x86/kvm/vmx.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 271dd70..316f9bf 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -443,6 +443,8 @@ struct nested_vmx {
> };
>
> #define POSTED_INTR_ON 0
> +#define POSTED_INTR_SN 1
> +
> /* Posted-Interrupt Descriptor */
> struct pi_desc {
> u32 pir[8]; /* Posted interrupt requested */
> @@ -483,6 +485,30 @@ static int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
> return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
> }
>
> +static void pi_clear_sn(struct pi_desc *pi_desc)
> +{
> + return clear_bit(POSTED_INTR_SN,
> + (unsigned long *)&pi_desc->control);
> +}
> +
> +static void pi_set_sn(struct pi_desc *pi_desc)
> +{
> + return set_bit(POSTED_INTR_SN,
> + (unsigned long *)&pi_desc->control);
> +}
> +
> +static int pi_test_on(struct pi_desc *pi_desc)
> +{
> + return test_bit(POSTED_INTR_ON,
> + (unsigned long *)&pi_desc->control);
> +}
> +
> +static int pi_test_sn(struct pi_desc *pi_desc)
> +{
> + return test_bit(POSTED_INTR_SN,
> + (unsigned long *)&pi_desc->control);
> +}
> +
> struct vcpu_vmx {
> struct kvm_vcpu vcpu;
> unsigned long host_rsp;
>
Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
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