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Subject[RFC Part2 PATCH v3 11/26] KVM: X86: Extend struct kvm_arch to include SEV information
Date
The patch adds a new member (sev_info) in 'struct kvm_arch', and
setter/getter functions for the sev_info field.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
arch/x86/include/asm/kvm_host.h | 9 +++++++++
arch/x86/kvm/svm.c | 45 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4295f82..150177e 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -742,6 +742,13 @@ enum kvm_irqchip_mode {
KVM_IRQCHIP_SPLIT, /* created with KVM_CAP_SPLIT_IRQCHIP */
};

+struct kvm_sev_info {
+ bool active; /* SEV enabled guest */
+ unsigned int handle; /* firmware handle */
+ unsigned int asid; /* asid for this guest */
+ int sev_fd; /* SEV device fd */
+};
+
struct kvm_arch {
unsigned int n_used_mmu_pages;
unsigned int n_requested_mmu_pages;
@@ -829,6 +836,8 @@ struct kvm_arch {

bool x2apic_format;
bool x2apic_broadcast_quirk_disabled;
+
+ struct kvm_sev_info sev_info;
};

struct kvm_vm_stat {
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 256c9df..2a5a03a 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -322,6 +322,51 @@ enum {
/* Secure Encrypted Virtualization */
static unsigned int max_sev_asid;

+static inline struct kvm_sev_info *to_sev_info(struct kvm *kvm)
+{
+ return &kvm->arch.sev_info;
+}
+
+static inline void sev_set_active(struct kvm *kvm)
+{
+ to_sev_info(kvm)->active = true;
+}
+
+static inline unsigned int sev_get_handle(struct kvm *kvm)
+{
+ return to_sev_info(kvm)->handle;
+}
+
+static inline bool sev_guest(struct kvm *kvm)
+{
+ return to_sev_info(kvm)->active;
+}
+
+static inline int sev_get_asid(struct kvm *kvm)
+{
+ return to_sev_info(kvm)->asid;
+}
+
+static inline int sev_get_fd(struct kvm *kvm)
+{
+ return to_sev_info(kvm)->sev_fd;
+}
+
+static inline void sev_set_asid(struct kvm *kvm, int asid)
+{
+ to_sev_info(kvm)->asid = asid;
+}
+
+static inline void sev_set_handle(struct kvm *kvm, unsigned int handle)
+{
+ to_sev_info(kvm)->handle = handle;
+}
+
+static inline void sev_set_fd(struct kvm *kvm, int fd)
+{
+ to_sev_info(kvm)->sev_fd = fd;
+}
+
static inline void mark_all_dirty(struct vmcb *vmcb)
{
vmcb->control.clean = 0;
--
2.9.4
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