On 1/23/2024 7:53 AM, isaku.yamahata@xxxxxxxxx wrote:
From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
This corresponds to VMX __vmx_complete_interrupts(). Because TDX
virtualize vAPIC, KVM only needs to care NMI injection.
Nit: complete -> Complete in shortlog.
Reviewed-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/vmx/tdx.c | 10 ++++++++++
arch/x86/kvm/vmx/tdx.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index 71c6fc10e8c4..3b2ba9f974be 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -585,6 +585,14 @@ void tdx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
*/
}
+static void tdx_complete_interrupts(struct kvm_vcpu *vcpu)
+{
+ /* Avoid costly SEAMCALL if no nmi was injected */
+ if (vcpu->arch.nmi_injected)
+ vcpu->arch.nmi_injected = td_management_read8(to_tdx(vcpu),
+ TD_VCPU_PEND_NMI);
+}
+
struct tdx_uret_msr {
u32 msr;
unsigned int slot;
@@ -713,6 +721,8 @@ fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu)
vcpu->arch.regs_avail &= ~VMX_REGS_LAZY_LOAD_SET;
trace_kvm_exit(vcpu, KVM_ISA_VMX);
+ tdx_complete_interrupts(vcpu);
+
return EXIT_FASTPATH_NONE;
}
diff --git a/arch/x86/kvm/vmx/tdx.h b/arch/x86/kvm/vmx/tdx.h
index 883eb05d207f..9082a2604ec6 100644
--- a/arch/x86/kvm/vmx/tdx.h
+++ b/arch/x86/kvm/vmx/tdx.h
@@ -201,6 +201,8 @@ TDX_BUILD_TDVPS_ACCESSORS(16, VMCS, vmcs);
TDX_BUILD_TDVPS_ACCESSORS(32, VMCS, vmcs);
TDX_BUILD_TDVPS_ACCESSORS(64, VMCS, vmcs);
+TDX_BUILD_TDVPS_ACCESSORS(8, MANAGEMENT, management);
+
static __always_inline u64 td_tdcs_exec_read64(struct kvm_tdx *kvm_tdx, u32 field)
{
struct tdx_module_args out;
