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KVM: VMX: Introduce pi_is_pir_empty() helper 

Streamline the PID.PIR check and change its call sites to use
the newly added helper.

Suggested-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Joao Martins 2019-11-11 17:20:12 +00:00 committed by Paolo Bonzini
parent 132194ffa1
commit 29881b6ec6
2 changed files with 7 additions and 3 deletions
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5
arch/x86/kvm/vmx/vmx.c
View File

@ -1305,7 +1305,7 @@ after_clear_sn:
*/
smp_mb__after_atomic();
if (!bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS))
if (!pi_is_pir_empty(pi_desc))
pi_set_on(pi_desc);
}
@ -6184,8 +6184,7 @@ static bool vmx_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu)
struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
return pi_test_on(pi_desc) ||
(pi_test_sn(pi_desc) &&
!bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS));
(pi_test_sn(pi_desc) && !pi_is_pir_empty(pi_desc));
}
static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)

5
arch/x86/kvm/vmx/vmx.h
View File

@ -355,6 +355,11 @@ static inline 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 bool pi_is_pir_empty(struct pi_desc *pi_desc)
{
return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
}
static inline void pi_set_sn(struct pi_desc *pi_desc)
{
set_bit(POSTED_INTR_SN,