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-rw-r--r--sevstep/sevstep.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/sevstep/sevstep.c b/sevstep/sevstep.c
deleted file mode 100644
index d603769..0000000
--- a/sevstep/sevstep.c
+++ /dev/null
@@ -1,263 +0,0 @@
-#include "sevstep.h"
-#include "svm/cachepc/cachepc.h"
-
-#include "mmu/mmu_internal.h"
-#include "mmu.h"
-
-#include "irq.h"
-#include "ioapic.h"
-#include "mmu.h"
-#include "mmu/tdp_mmu.h"
-#include "x86.h"
-#include "kvm_cache_regs.h"
-#include "kvm_emulate.h"
-#include "cpuid.h"
-#include "mmu/spte.h"
-
-#include <linux/kvm_host.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/moduleparam.h>
-#include <linux/export.h>
-#include <linux/swap.h>
-#include <linux/hugetlb.h>
-#include <linux/compiler.h>
-#include <linux/srcu.h>
-#include <linux/slab.h>
-#include <linux/sched/signal.h>
-#include <linux/uaccess.h>
-#include <linux/hash.h>
-#include <linux/kern_levels.h>
-#include <linux/kthread.h>
-#include <linux/sev.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-
-#include "kvm_cache_regs.h"
-#include "svm/svm.h"
-
-struct kvm* main_vm;
-EXPORT_SYMBOL(main_vm);
-
-bool
-sevstep_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) {
- pr_warn("Adding gfn: %016llx to access page track pool\n", gfn);
- }
-
- if (mode == KVM_PAGE_TRACK_WRITE) {
- pr_warn("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 {
- pr_warn("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(sevstep_track_single_page);
-
-bool
-sevstep_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) {
- pr_warn("Removing gfn: %016llx from acess page track pool\n", gfn);
- }
- if (mode == KVM_PAGE_TRACK_WRITE) {
- pr_warn("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 {
- pr_warn("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(sevstep_untrack_single_page);
-
-bool
-sevstep_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(sevstep_reset_accessed_on_page);
-
-bool
-sevstep_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(sevstep_clear_nx_on_page);
-
-long
-sevstep_start_tracking(struct kvm_vcpu *vcpu, enum kvm_page_track_mode mode)
-{
- struct kvm_memory_slot *slot;
- struct kvm_memory_slot *first_memslot;
- struct rb_node *node;
- u64 iterator, iterat_max;
- long count = 0;
- 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;
- 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(sevstep_start_tracking);
-
-long
-sevstep_stop_tracking(struct kvm_vcpu *vcpu, enum kvm_page_track_mode mode)
-{
- struct kvm_memory_slot *slot;
- struct kvm_memory_slot *first_memslot;
- struct rb_node *node;
- u64 iterator, iterat_max;
- long count = 0;
- 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;
- 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(sevstep_stop_tracking);
-
-int
-sevstep_get_rip_kvm_vcpu(struct kvm_vcpu *vcpu, uint64_t *rip)
-{
- return 0;
-}
generated by cgit v1.2.3-71-gd317 (git 2.46.0) at 2025-12-05 16:50:55 +0000