linux-kernel - [PATCH 4/5] selftests: KVM: Add support for posted interrupt handling in L2

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Date:   Tue,  2 Aug 2022 23:07:17 +0000
From:   Mingwei Zhang <mizhang@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Oliver Upton <oupton@...gle.com>,
        Mingwei Zhang <mizhang@...gle.com>
Subject: [PATCH 4/5] selftests: KVM: Add support for posted interrupt handling
 in L2

Add support for posted interrupt handling in L2. This is done by adding
needed data structures in vmx_pages and APIs to allow an L2 receive posted
interrupts

Cc: Jim Mattson <jmattson@...gle.com>
Signed-off-by: Mingwei Zhang <mizhang@...gle.com>
---
 tools/testing/selftests/kvm/include/x86_64/vmx.h | 10 ++++++++++
 tools/testing/selftests/kvm/lib/x86_64/vmx.c     | 16 ++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/x86_64/vmx.h b/tools/testing/selftests/kvm/include/x86_64/vmx.h
index 7d8c980317f7..3449ae8ab282 100644
--- a/tools/testing/selftests/kvm/include/x86_64/vmx.h
+++ b/tools/testing/selftests/kvm/include/x86_64/vmx.h
@@ -579,6 +579,14 @@ struct vmx_pages {
 	void *apic_access_hva;
 	uint64_t apic_access_gpa;
 	void *apic_access;
+
+	void *virtual_apic_hva;
+	uint64_t virtual_apic_gpa;
+	void *virtual_apic;
+
+	void *posted_intr_desc_hva;
+	uint64_t posted_intr_desc_gpa;
+	void *posted_intr_desc;
 };
 
 union vmx_basic {
@@ -622,5 +630,7 @@ void nested_identity_map_1g(struct vmx_pages *vmx, struct kvm_vm *vm,
 void prepare_eptp(struct vmx_pages *vmx, struct kvm_vm *vm,
 		  uint32_t eptp_memslot);
 void prepare_virtualize_apic_accesses(struct vmx_pages *vmx, struct kvm_vm *vm);
+void prepare_virtual_apic(struct vmx_pages *vmx, struct kvm_vm *vm);
+void prepare_posted_intr_desc(struct vmx_pages *vmx, struct kvm_vm *vm);
 
 #endif /* SELFTEST_KVM_VMX_H */
diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
index 80a568c439b8..7d65bee37b9f 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
@@ -556,3 +556,19 @@ void prepare_virtualize_apic_accesses(struct vmx_pages *vmx, struct kvm_vm *vm)
 	vmx->apic_access_hva = addr_gva2hva(vm, (uintptr_t)vmx->apic_access);
 	vmx->apic_access_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->apic_access);
 }
+
+void prepare_virtual_apic(struct vmx_pages *vmx, struct kvm_vm *vm)
+{
+	vmx->virtual_apic = (void *)vm_vaddr_alloc_page(vm);
+	vmx->virtual_apic_hva = addr_gva2hva(vm, (uintptr_t)vmx->virtual_apic);
+	vmx->virtual_apic_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->virtual_apic);
+}
+
+void prepare_posted_intr_desc(struct vmx_pages *vmx, struct kvm_vm *vm)
+{
+	vmx->posted_intr_desc = (void *)vm_vaddr_alloc_page(vm);
+	vmx->posted_intr_desc_hva =
+		addr_gva2hva(vm, (uintptr_t)vmx->posted_intr_desc);
+	vmx->posted_intr_desc_gpa =
+		addr_gva2gpa(vm, (uintptr_t)vmx->posted_intr_desc);
+}
-- 
2.37.1.455.g008518b4e5-goog