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Commit ebbfc765 authored by Feng Wu's avatar Feng Wu Committed by Paolo Bonzini
Browse files

KVM: Add some helper functions for Posted-Interrupts 



This patch adds some helper functions to manipulate the
Posted-Interrupts Descriptor.

Signed-off-by: default avatarFeng Wu <feng.wu@intel.com>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: default avatarAlex Williamson <alex.williamson@redhat.com>
[Make the new functions inline. - Paolo]
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 6ef1522f

arch/x86/kvm/vmx.c

+26 −0
Original line number Diff line number Diff line
@@ -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 inline void pi_clear_sn(struct pi_desc *pi_desc)

{

	return clear_bit(POSTED_INTR_SN,

			(unsigned long *)&pi_desc->control);

}



static inline void pi_set_sn(struct pi_desc *pi_desc)

{

	return set_bit(POSTED_INTR_SN,

			(unsigned long *)&pi_desc->control);

}



static inline int pi_test_on(struct pi_desc *pi_desc)

{

	return test_bit(POSTED_INTR_ON,

			(unsigned long *)&pi_desc->control);

}



static inline 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;