[patch 1/3] KVM: x86: add method to test PIR bitmap vector

Marcelo Tosatti
2014-12-15T22:11:00Z

[-- Attachment #1: add-test-pir --]
[-- Type: text/plain, Size: 2342 bytes --]

kvm_x86_ops->test_posted_interrupt() returns true/false depending
whether 'vector' is set.

Next patch makes use of this interface.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Index: kvm/arch/x86/include/asm/kvm_host.h
===================================================================
--- kvm.orig/arch/x86/include/asm/kvm_host.h
+++ kvm/arch/x86/include/asm/kvm_host.h
@@ -743,6 +743,7 @@ struct kvm_x86_ops {
void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa);
void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
+ bool (*test_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
Index: kvm/arch/x86/kvm/vmx.c
===================================================================
--- kvm.orig/arch/x86/kvm/vmx.c
+++ kvm/arch/x86/kvm/vmx.c
@@ -435,6 +435,11 @@ static int pi_test_and_set_pir(int vecto
return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
}

+static int pi_test_pir(int vector, struct pi_desc *pi_desc)
+{
+ return test_bit(vector, (unsigned long *)pi_desc->pir);
+}
+
struct vcpu_vmx {
struct kvm_vcpu vcpu;
unsigned long host_rsp;
@@ -5939,6 +5944,7 @@ static __init int hardware_setup(void)
else {
kvm_x86_ops->hwapic_irr_update = NULL;
kvm_x86_ops->deliver_posted_interrupt = NULL;
+ kvm_x86_ops->test_posted_interrupt = NULL;
kvm_x86_ops->sync_pir_to_irr = vmx_sync_pir_to_irr_dummy;
}

@@ -6960,6 +6966,13 @@ static int handle_invvpid(struct kvm_vcp
return 1;
}

+static bool vmx_test_pir(struct kvm_vcpu *vcpu, int vector)
+{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+ return pi_test_pir(vector, &vmx->pi_desc);
+}
+
/*
* The exit handlers return 1 if the exit was handled fully and guest execution
* may resume. Otherwise they set the kvm_run parameter to indicate what needs
@@ -9374,6 +9387,7 @@ static struct kvm_x86_ops vmx_x86_ops =
.hwapic_isr_update = vmx_hwapic_isr_update,
.sync_pir_to_irr = vmx_sync_pir_to_irr,
.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
+ .test_posted_interrupt = vmx_test_pir,

.set_tss_addr = vmx_set_tss_addr,
.get_tdp_level = get_ept_level,