Sevstep and cachepc refactoring

1 files changed, 0 insertions, 205 deletions

diff --git a/sevstep/kvm.c b/sevstep/kvm.c
deleted file mode 100644
index b6b0d49..0000000
--- a/sevstep/kvm.c
+++ /dev/null
@@ -1,205 +0,0 @@
-#include "kvm.h"
-
-#include <linux/types.h>
-
-bool
-__untrack_single_page(struct kvm_vcpu *vcpu, gfn_t gfn,
-	enum kvm_page_track_mode mode)
-{
-	int idx;
-	bool ret;
-	struct kvm_memory_slot *slot;
-
-	ret = false;
-	idx = srcu_read_lock(&vcpu->kvm->srcu);
-	if (mode == KVM_PAGE_TRACK_ACCESS) {
-		//printk("Removing gfn: %016llx from acess page track pool\n", gfn);
-	}
-	if (mode == KVM_PAGE_TRACK_WRITE) {
-		//printk("Removing gfn: %016llx from write page track pool\n", gfn);
-	}
-	slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
-
-	if (slot != NULL && kvm_slot_page_track_is_active(vcpu->kvm, slot, gfn, mode)) {
-		write_lock(&vcpu->kvm->mmu_lock);
-		kvm_slot_page_track_remove_page(vcpu->kvm, slot, gfn, mode);
-		write_unlock(&vcpu->kvm->mmu_lock);
-		ret = true;
-	} else {
-		printk("Failed to untrack %016llx because ", gfn);
-		if (slot == NULL) {
-			printk(KERN_CONT "slot was	null");
-		} else if (!kvm_slot_page_track_is_active(vcpu->kvm, slot, gfn, mode)) {
-			printk(KERN_CONT "page track was not active");
-		}
-		printk(KERN_CONT "\n");
-	}
-	srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	return ret;
-}
-EXPORT_SYMBOL(__untrack_single_page);
-
-bool
-__reset_accessed_on_page(struct kvm_vcpu *vcpu, gfn_t gfn)
-{
-	int idx;
-	bool ret;
-	struct kvm_memory_slot *slot;
-
-	ret = false;
-	idx = srcu_read_lock(&vcpu->kvm->srcu);
-	slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
-	if( slot != NULL ) {
-		write_lock(&vcpu->kvm->mmu_lock);
-		//Vincent: The kvm mmu function now requires min_level
-		//We want all pages to protected so we do PG_LEVEL_4K
-		//https://patchwork.kernel.org/project/kvm/patch/20210416082511.2856-2-zhukeqian1@huawei.com/
-		sevstep_kvm_mmu_slot_gfn_protect(vcpu->kvm,slot,gfn,PG_LEVEL_4K,KVM_PAGE_TRACK_RESET_ACCESSED);
-		write_unlock(&vcpu->kvm->mmu_lock);
-		ret = true;
-	}
-	srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	return ret;
-}
-EXPORT_SYMBOL(__reset_accessed_on_page);
-
-bool
-__clear_nx_on_page(struct kvm_vcpu *vcpu, gfn_t gfn)
-{
-	int idx;
-	bool ret;
-	struct kvm_memory_slot *slot;
-
-	ret = false;
-	idx = srcu_read_lock(&vcpu->kvm->srcu);
-	slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
-	if( slot != NULL ) {
-		write_lock(&vcpu->kvm->mmu_lock);
-		//Vincent: The kvm mmu function now requires min_level
-		//We want all pages to protected so we do PG_LEVEL_4K
-		//https://patchwork.kernel.org/project/kvm/patch/20210416082511.2856-2-zhukeqian1@huawei.com/
-		sevstep_kvm_mmu_slot_gfn_protect(vcpu->kvm, slot, gfn,
-			PG_LEVEL_4K, KVM_PAGE_TRACK_RESET_EXEC);
-		write_unlock(&vcpu->kvm->mmu_lock);
-		ret = true;
-	}
-	srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	return ret;
-}
-EXPORT_SYMBOL(__clear_nx_on_page);
-
-bool
-__track_single_page(struct kvm_vcpu *vcpu, gfn_t gfn,
-	enum kvm_page_track_mode mode)
-{
-	int idx;
-	bool ret;
-	struct kvm_memory_slot *slot;
-
-	ret = false;
-	idx = srcu_read_lock(&vcpu->kvm->srcu);
-	if (mode == KVM_PAGE_TRACK_ACCESS) {
-		//printk_ratelimited("Adding gfn: %016llx to acess page track pool\n", gfn);
-		//printk("Adding gfn: %016llx to acess page track pool\n", gfn);
-	}
-	if (mode == KVM_PAGE_TRACK_WRITE) {
-		//printk_ratelimited("Adding gfn: %016llx to write page track pool\n", gfn);
-	}
-	slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
-	if (slot != NULL && !kvm_slot_page_track_is_active(vcpu->kvm,slot, gfn, mode)) {
-
-		write_lock(&vcpu->kvm->mmu_lock);
-		kvm_slot_page_track_add_page(vcpu->kvm, slot, gfn, mode);
-		write_unlock(&vcpu->kvm->mmu_lock);
-		ret = true;
-
-	} else {
-
-		printk("Failed to track %016llx because ", gfn);
-		if (slot == NULL) {
-			printk(KERN_CONT "slot was	null");
-		}
-		if (kvm_slot_page_track_is_active(vcpu->kvm, slot, gfn, mode)) {
-			printk(KERN_CONT "page is already tracked");
-		}
-		printk(KERN_CONT "\n");
-	}
-	srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	return ret;
-}
-EXPORT_SYMBOL(__track_single_page);
-
-long
-kvm_start_tracking(struct kvm_vcpu *vcpu,enum kvm_page_track_mode mode )
-{
-	long count = 0;
-	u64 iterator, iterat_max;
-	struct kvm_memory_slot *slot;
-	int idx;
-
-	//Vincent: Memslots interface changed into a rb tree, see
-	//here: https://lwn.net/Articles/856392/
-	//and here: https://lore.kernel.org/all/cover.1632171478.git.maciej.szmigiero@oracle.com/T/#u
-	//Thus we use instead of
-	//iterat_max = vcpu->kvm->memslots[0]->memslots[0].base_gfn
-	//	     + vcpu->kvm->memslots[0]->memslots[0].npages;
-	struct rb_node *node;
-	struct kvm_memory_slot *first_memslot;
-	node = rb_last(&(vcpu->kvm->memslots[0]->gfn_tree));
-	first_memslot = container_of(node, struct kvm_memory_slot, gfn_node[0]);
-	iterat_max = first_memslot->base_gfn + first_memslot->npages;
-	for (iterator=0; iterator < iterat_max; iterator++)
-	{
-		idx = srcu_read_lock(&vcpu->kvm->srcu);
-		slot = kvm_vcpu_gfn_to_memslot(vcpu, iterator);
-		if ( slot != NULL  && !kvm_slot_page_track_is_active(vcpu->kvm, slot, iterator, mode)) {
-			write_lock(&vcpu->kvm->mmu_lock);
-			kvm_slot_page_track_add_page(vcpu->kvm, slot, iterator, mode);
-			write_unlock(&vcpu->kvm->mmu_lock);
-			count++;
-		}
-		srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	}
-
-	return count;
-}
-EXPORT_SYMBOL(kvm_start_tracking);
-
-long
-kvm_stop_tracking(struct kvm_vcpu *vcpu,enum kvm_page_track_mode mode)
-{
-	long count = 0;
-	u64 iterator, iterat_max;
-	struct kvm_memory_slot *slot;
-	int idx;
-
-
-	//Vincent: Memslots interface changed into a rb tree, see
-	//here: https://lwn.net/Articles/856392/
-	//and here: https://lore.kernel.org/all/cover.1632171478.git.maciej.szmigiero@oracle.com/T/#u
-	//Thus we use instead of
-	//iterat_max = vcpu->kvm->memslots[0]->memslots[0].base_gfn
-	//	     + vcpu->kvm->memslots[0]->memslots[0].npages;
-	struct rb_node *node;
-	struct kvm_memory_slot *first_memslot;
-	node = rb_last(&(vcpu->kvm->memslots[0]->gfn_tree));
-	first_memslot = container_of(node, struct kvm_memory_slot, gfn_node[0]);
-	iterat_max = first_memslot->base_gfn + first_memslot->npages;
-	for (iterator=0; iterator < iterat_max; iterator++)
-	{
-		idx = srcu_read_lock(&vcpu->kvm->srcu);
-		slot = kvm_vcpu_gfn_to_memslot(vcpu, iterator);
-			//Vincent: I think see here https://patchwork.kernel.org/project/kvm/patch/20210924163152.289027-22-pbonzini@redhat.com/
-			if ( slot != NULL && kvm_slot_page_track_is_active(vcpu->kvm, slot, iterator, mode)) {
-				write_lock(&vcpu->kvm->mmu_lock);
-				kvm_slot_page_track_remove_page(vcpu->kvm, slot, iterator, mode);
-				write_unlock(&vcpu->kvm->mmu_lock);
-				count++;
-		}
-		srcu_read_unlock(&vcpu->kvm->srcu, idx);
-	}
-
-	return count;
-}
-EXPORT_SYMBOL(kvm_stop_tracking);
-