[RFC PATCH v3 39/59] KVM: VMX: Modify NMI and INTR handlers to take intr_info as param

isaku.yamahata
2021-11-25T00:21:52Z

From: Sean Christopherson <sean.j.christopherson@intel.com>

Pass intr_info to the NMI and INTR handlers instead of pulling it from
vcpu_vmx in preparation for sharing the bulk of the handlers with TDX.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/kvm/vmx/vmx.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 1e20e85a958f..f243d5ecf543 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6302,25 +6302,24 @@ static void handle_interrupt_nmi_irqoff(struct kvm_vcpu *vcpu,
kvm_after_interrupt(vcpu);
}

-static void handle_exception_nmi_irqoff(struct vcpu_vmx *vmx)
+static void handle_exception_nmi_irqoff(struct kvm_vcpu *vcpu, u32 intr_info)
{
const unsigned long nmi_entry = (unsigned long)asm_exc_nmi_noist;
- u32 intr_info = vmx_get_intr_info(&vmx->vcpu);

/* if exit due to PF check for async PF */
if (is_page_fault(intr_info))
- vmx->vcpu.arch.apf.host_apf_flags = kvm_read_and_reset_apf_flags();
+ vcpu->arch.apf.host_apf_flags = kvm_read_and_reset_apf_flags();
/* Handle machine checks before interrupts are enabled */
else if (is_machine_check(intr_info))
kvm_machine_check();
/* We need to handle NMIs before interrupts are enabled */
else if (is_nmi(intr_info))
- handle_interrupt_nmi_irqoff(&vmx->vcpu, nmi_entry);
+ handle_interrupt_nmi_irqoff(vcpu, nmi_entry);
}

-static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu)
+static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu,
+ u32 intr_info)
{
- u32 intr_info = vmx_get_intr_info(vcpu);
unsigned int vector = intr_info & INTR_INFO_VECTOR_MASK;
gate_desc *desc = (gate_desc *)host_idt_base + vector;

@@ -6339,9 +6338,9 @@ static void vmx_handle_exit_irqoff(struct kvm_vcpu *vcpu)
return;

if (vmx->exit_reason.basic == EXIT_REASON_EXTERNAL_INTERRUPT)
- handle_external_interrupt_irqoff(vcpu);
+ handle_external_interrupt_irqoff(vcpu, vmx_get_intr_info(vcpu));
else if (vmx->exit_reason.basic == EXIT_REASON_EXCEPTION_NMI)
- handle_exception_nmi_irqoff(vmx);
+ handle_exception_nmi_irqoff(vcpu, vmx_get_intr_info(vcpu));
}

/*
--
2.25.1