linux-kernel - [PATCH 7/7] KVM: SVM: introduce data structures for nested virt state

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Message-Id: <20200515174144.1727-8-pbonzini@redhat.com>
Date:   Fri, 15 May 2020 13:41:44 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Cathy Avery <cavery@...hat.com>,
        Liran Alon <liran.alon@...cle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: [PATCH 7/7] KVM: SVM: introduce data structures for nested virt state

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/include/uapi/asm/kvm.h | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
index 3f3f780c8c65..cdca0fd1b107 100644
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
@@ -385,7 +385,7 @@ struct kvm_sync_regs {
 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4)
 
 #define KVM_STATE_NESTED_FORMAT_VMX	0
-#define KVM_STATE_NESTED_FORMAT_SVM	1	/* unused */
+#define KVM_STATE_NESTED_FORMAT_SVM	1
 
 #define KVM_STATE_NESTED_GUEST_MODE	0x00000001
 #define KVM_STATE_NESTED_RUN_PENDING	0x00000002
@@ -395,8 +395,14 @@ struct kvm_sync_regs {
 #define KVM_STATE_NESTED_SMM_GUEST_MODE	0x00000001
 #define KVM_STATE_NESTED_SMM_VMXON	0x00000002
 
+#define KVM_STATE_NESTED_SVM_VMENTRY_IF	0x00000001
+#define KVM_STATE_NESTED_SVM_GIF	0x00000002
+
 #define KVM_STATE_NESTED_VMX_VMCS_SIZE	0x1000
 
+#define KVM_STATE_NESTED_SVM_VMCB_SIZE	0x1000
+
+
 struct kvm_vmx_nested_state_data {
 	__u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
 	__u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
@@ -411,6 +417,17 @@ struct kvm_vmx_nested_state_hdr {
 	} smm;
 };
 
+struct kvm_svm_nested_state_data {
+	/* Save area only used if KVM_STATE_NESTED_RUN_PENDING.  */
+	__u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE];
+};
+
+struct kvm_svm_nested_state_hdr {
+	__u64 vmcb_pa;
+
+	__u16 interrupt_flags;
+};
+
 /* for KVM_CAP_NESTED_STATE */
 struct kvm_nested_state {
 	__u16 flags;
@@ -419,6 +441,7 @@ struct kvm_nested_state {
 
 	union {
 		struct kvm_vmx_nested_state_hdr vmx;
+		struct kvm_svm_nested_state_hdr svm;
 
 		/* Pad the header to 128 bytes.  */
 		__u8 pad[120];
@@ -431,6 +454,7 @@ struct kvm_nested_state {
 	 */
 	union {
 		struct kvm_vmx_nested_state_data vmx[0];
+		struct kvm_svm_nested_state_data svm[0];
 	} data;
 };
 
-- 
2.18.2