1 files changed, 0 insertions, 135 deletions
diff --git a/sevstep/mmu.c b/sevstep/mmu.c
deleted file mode 100644
index 0ebdd83..0000000
--- a/sevstep/mmu.c
+++ /dev/null
@@ -1,135 +0,0 @@
-#include "../sevstep/sevstep.h"
-#include "../sevstep/uspt.h"
-
-static void
-sevstep_uspt_page_fault_handle(struct kvm_vcpu *vcpu,
-	struct kvm_page_fault *fault)
-{
-	const int modes[] = {
-		KVM_PAGE_TRACK_WRITE,
-		KVM_PAGE_TRACK_ACCESS,
-		KVM_PAGE_TRACK_EXEC
-	};
-	uint64_t current_rip;
-	bool was_tracked;
-	int have_rip, i;
-	int send_err;
-
-	was_tracked = false;
-	for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
-		if (kvm_slot_page_track_is_active(vcpu->kvm,
-				fault->slot, fault->gfn, modes[i])) {
-			sevstep_untrack_single_page(vcpu, fault->gfn, modes[i]);
-			was_tracked = true;
-		}
-	}
-
-	if (was_tracked) {
-		have_rip = false;
-		if (sevstep_uspt_should_get_rip())
-			have_rip = sevstep_get_rip_kvm_vcpu(vcpu, &current_rip) == 0;
-		if (sevstep_uspt_batch_tracking_in_progress()) {
-			send_err = sevstep_uspt_batch_tracking_save(fault->gfn << PAGE_SHIFT,
-				fault->error_code, have_rip, current_rip);
-			if (send_err) {
-				printk_ratelimited(
-					"sevstep_uspt_batch_tracking_save failed with %d\n"
-					"##########################\n", send_err);
-			}
-			sevstep_uspt_batch_tracking_handle_retrack(vcpu, fault->gfn);
-			sevstep_uspt_batch_tracking_inc_event_idx();
-		} else {
-			send_err = sevstep_uspt_send_and_block(fault->gfn << PAGE_SHIFT,
-				fault->error_code, have_rip, current_rip);
-			if (send_err) {
-				printk("sevstep_uspt_send_and_block failed with %d\n"
-					"##########################\n", send_err);
-			}
-		}
-	}
-}
-
-bool
-sevstep_spte_protect(u64 *sptep, bool pt_protect, enum kvm_page_track_mode mode)
-{
-	u64 spte;
-	bool flush;
-
-	spte = *sptep;
-	if (!is_writable_pte(spte) && !(pt_protect && is_mmu_writable_spte(spte)))
-		return false;
-
-	rmap_printk("spte %p %llx\n", sptep, *sptep);
-
-	if (pt_protect)
-		spte &= ~EPT_SPTE_MMU_WRITABLE;
-
-	flush = false;
-	if (mode == KVM_PAGE_TRACK_WRITE) {
-		spte = spte & ~PT_WRITABLE_MASK;
-		flush = true;
-	} else if (mode == KVM_PAGE_TRACK_RESET_ACCESSED) {
-		spte = spte & ~PT_ACCESSED_MASK;
-	} else if (mode == KVM_PAGE_TRACK_ACCESS) {
-		spte = spte & ~PT_PRESENT_MASK;
-		spte = spte & ~PT_WRITABLE_MASK;
-		spte = spte & ~PT_USER_MASK;
-		spte = spte | (0x1ULL << PT64_NX_SHIFT);
-		flush = true;
-	} else if (mode == KVM_PAGE_TRACK_EXEC) {
-		spte = spte | (0x1ULL << PT64_NX_SHIFT);
-		flush = true;
-	} else if (mode == KVM_PAGE_TRACK_RESET_EXEC) {
-		spte = spte & ~(0x1ULL << PT64_NX_SHIFT);
-		flush = true;
-	} else {
-		printk(KERN_WARNING "spte_protect was called with invalid mode"
-			"parameter %d\n",mode);
-	}
-	flush |= mmu_spte_update(sptep, spte);
-
-	return flush;
-}
-EXPORT_SYMBOL(sevstep_spte_protect);
-
-bool sevstep_rmap_protect(struct kvm_rmap_head *rmap_head,
-	bool pt_protect, enum kvm_page_track_mode mode)
-{
-	u64 *sptep;
-	struct rmap_iterator iter;
-	bool flush = false;
-
-	for_each_rmap_spte(rmap_head, &iter, sptep) {
-		flush |= sevstep_spte_protect(sptep, pt_protect, mode);
-	}
-
-	return flush;
-}
-EXPORT_SYMBOL(sevstep_rmap_protect);
-
-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)
-{
-	struct kvm_rmap_head *rmap_head;
-	bool protected;
-	int i;
-
-	protected = false;
-
-	if (kvm_memslots_have_rmaps(kvm)) {
-		for (i = min_level; i <= KVM_MAX_HUGEPAGE_LEVEL; ++i) {
-			rmap_head = gfn_to_rmap(gfn, i, slot);
-			protected |= sevstep_rmap_protect(rmap_head, true, mode);
-		}
-	}
-
-	if (is_tdp_mmu_enabled(kvm)) {
-		protected |= kvm_tdp_mmu_write_protect_gfn(kvm,
-			slot, gfn, min_level);
-	}
-
-	return protected;
-}
-EXPORT_SYMBOL(sevstep_kvm_mmu_slot_gfn_protect);
-