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KVM: Add some helper functions for Posted-Interrupts

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

Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
[Make the new functions inline. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Feng Wu 2015-09-18 22:29:46 +08:00 committed by Paolo Bonzini
parent 6ef1522f7e
commit ebbfc76536
1 changed files with 26 additions and 0 deletions
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26
arch/x86/kvm/vmx.c
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@ -443,6 +443,8 @@ struct nested_vmx {
}; };
#define POSTED_INTR_ON 0 #define POSTED_INTR_ON 0
#define POSTED_INTR_SN 1
/* Posted-Interrupt Descriptor */ /* Posted-Interrupt Descriptor */
struct pi_desc { struct pi_desc {
u32 pir[8]; /* Posted interrupt requested */ 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); 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 vcpu_vmx {
struct kvm_vcpu vcpu; struct kvm_vcpu vcpu;
unsigned long host_rsp; unsigned long host_rsp;