Refactor sevstep kernel patch into repository

1 files changed, 67 insertions, 0 deletions

diff --git a/sevstep/sevstep.h b/sevstep/sevstep.h
new file mode 100644
index 0000000..86d25f7
--- /dev/null
+++ b/sevstep/sevstep.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <linux/types.h>
+#include <linux/spinlock_types.h>
+#include <asm/atomic.h>
+#include <linux/kvm_types.h>
+#include <asm/kvm_page_track.h>
+
+#include <linux/kvm_host.h>
+#include <linux/pid.h>
+#include <linux/psp-sev.h>
+
+
+#define CTL_MSR_0  0xc0010200ULL
+#define CTL_MSR_1  0xc0010202ULL
+#define CTL_MSR_2  0xc0010204ULL
+#define CTL_MSR_3  0xc0010206ULL
+#define CTL_MSR_4  0xc0010208ULL
+#define CTL_MSR_5  0xc001020aULL
+
+#define CTR_MSR_0  0xc0010201ULL
+#define CTR_MSR_1  0xc0010203ULL
+#define CTR_MSR_2  0xc0010205ULL
+#define CTR_MSR_3  0xc0010207ULL
+#define CTR_MSR_4  0xc0010209ULL
+#define CTR_MSR_5  0xc001020bULL
+
+typedef struct {
+	uint64_t HostGuestOnly;
+	uint64_t CntMask;
+	uint64_t Inv;
+	uint64_t En;
+	uint64_t Int;
+	uint64_t Edge;
+	uint64_t OsUserMode;
+	uint64_t UintMask;
+	uint64_t EventSelect; //12 bits in total split in [11:8] and [7:0]
+
+} perf_ctl_config_t;
+
+extern struct kvm* main_vm;
+
+bool sevstep_spte_protect(u64 *sptep,
+	bool pt_protect, enum kvm_page_track_mode mode);
+bool sevstep_rmap_protect(struct kvm_rmap_head *rmap_head,
+	bool pt_protect, enum kvm_page_track_mode mode);
+bool sevstep_kvm_mmu_slot_gfn_protect(struct kvm *kvm, struct kvm_memory_slot *slot,
+	uint64_t gfn, int min_level, enum kvm_page_track_mode mode);
+
+bool __untrack_single_page(struct kvm_vcpu *vcpu, gfn_t gfn,
+	enum kvm_page_track_mode mode);
+bool __track_single_page(struct kvm_vcpu *vcpu, gfn_t gfn,
+	enum kvm_page_track_mode mode);
+bool __reset_accessed_on_page(struct kvm_vcpu *vcpu, gfn_t gfn);
+bool __clear_nx_on_page(struct kvm_vcpu *vcpu, gfn_t gfn);
+
+long kvm_start_tracking(struct kvm_vcpu *vcpu, enum kvm_page_track_mode mode);
+long kvm_stop_tracking(struct kvm_vcpu *vcpu, enum kvm_page_track_mode mode);
+void sev_step_handle_callback(void);
+
+uint64_t perf_ctl_to_u64(perf_ctl_config_t *config);
+void write_ctl(perf_ctl_config_t *config, int cpu, uint64_t ctl_msr);
+void read_ctr(uint64_t ctr_msr, int cpu, uint64_t *result);
+
+void setup_perfs(void);
+
+int sev_step_get_rip_kvm_vcpu(struct kvm_vcpu *vcpu, uint64_t *rip);