From: Mihai Donțu <mdo...@bitdefender.com>
This is needed because the emulator calls the page tracking code
irrespective of the current VM-exit reason or available information.
Signed-off-by: Mihai Donțu <mdo...@bitdefender.com>
Signed-off-by: Adalbert Lazăr <ala...@bitdefender.com>
---
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/include/asm/kvm_page_track.h | 10 ++++++----
arch/x86/kvm/mmu/mmu.c | 2 +-
arch/x86/kvm/mmu/page_track.c | 6 +++---
arch/x86/kvm/x86.c | 16 ++++++++--------
drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +-
6 files changed, 20 insertions(+), 18 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 43569a6fc776..692e55a5c312 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1610,7 +1610,7 @@ void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned
long kvm_nr_mmu_pages);
int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
-int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
+int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
const void *val, int bytes);
struct kvm_irq_mask_notifier {
diff --git a/arch/x86/include/asm/kvm_page_track.h
b/arch/x86/include/asm/kvm_page_track.h
index 79d84a94f8eb..f981b6360de5 100644
--- a/arch/x86/include/asm/kvm_page_track.h
+++ b/arch/x86/include/asm/kvm_page_track.h
@@ -28,12 +28,14 @@ struct kvm_page_track_notifier_node {
*
* @vcpu: the vcpu where the write access happened.
* @gpa: the physical address written by guest.
+ * @gva: the virtual address written by guest.
* @new: the data was written to the address.
* @bytes: the written length.
* @node: this node
*/
- void (*track_write)(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new,
- int bytes, struct kvm_page_track_notifier_node
*node);
+ void (*track_write)(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
+ const u8 *new, int bytes,
+ struct kvm_page_track_notifier_node *node);
/*
* It is called when memory slot is being moved or removed
* users can drop write-protection for the pages in that memory slot
@@ -72,7 +74,7 @@ kvm_page_track_register_notifier(struct kvm *kvm,
void
kvm_page_track_unregister_notifier(struct kvm *kvm,
struct kvm_page_track_notifier_node *n);
-void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new,
- int bytes);
+void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
+ const u8 *new, int bytes);
void kvm_page_track_flush_slot(struct kvm *kvm, struct kvm_memory_slot *slot);
#endif
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 24a9f4c3f5e7..a802c46d0e16 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -5115,7 +5115,7 @@ static u64 *get_written_sptes(struct kvm_mmu_page *sp,
gpa_t gpa, int *nspte)
return spte;
}
-static void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
+static void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
const u8 *new, int bytes,
struct kvm_page_track_notifier_node *node)
{
diff --git a/arch/x86/kvm/mmu/page_track.c b/arch/x86/kvm/mmu/page_track.c
index bb5d60bd4dbf..e0b1cdd3013e 100644
--- a/arch/x86/kvm/mmu/page_track.c
+++ b/arch/x86/kvm/mmu/page_track.c
@@ -281,8 +281,8 @@ EXPORT_SYMBOL_GPL(kvm_page_track_unregister_notifier);
* The node should figure out if the written page is the one that node is
* interested in by itself.
*/
-void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new,
- int bytes)
+void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
+ const u8 *new, int bytes)
{
struct kvm_page_track_notifier_head *head;
struct kvm_page_track_notifier_node *n;
@@ -297,7 +297,7 @@ void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
const u8 *new,
hlist_for_each_entry_srcu(n, &head->track_notifier_list, node,
srcu_read_lock_held(&head->track_srcu))
if (n->track_write)
- n->track_write(vcpu, gpa, new, bytes, n);
+ n->track_write(vcpu, gpa, gva, new, bytes, n);
srcu_read_unlock(&head->track_srcu, idx);
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b01d865f6047..723ef3b7f95f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6592,7 +6592,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu,
unsigned long gva,
return vcpu_is_mmio_gpa(vcpu, gva, *gpa, write);
}
-int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
+int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
const void *val, int bytes)
{
int ret;
@@ -6600,14 +6600,14 @@ int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t
gpa,
ret = kvm_vcpu_write_guest(vcpu, gpa, val, bytes);
if (ret < 0)
return 0;
- kvm_page_track_write(vcpu, gpa, val, bytes);
+ kvm_page_track_write(vcpu, gpa, gva, val, bytes);
return 1;
}
struct read_write_emulator_ops {
int (*read_write_prepare)(struct kvm_vcpu *vcpu, void *val,
int bytes);
- int (*read_write_emulate)(struct kvm_vcpu *vcpu, gpa_t gpa,
+ int (*read_write_emulate)(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
void *val, int bytes);
int (*read_write_mmio)(struct kvm_vcpu *vcpu, gpa_t gpa,
int bytes, void *val);
@@ -6628,16 +6628,16 @@ static int read_prepare(struct kvm_vcpu *vcpu, void
*val, int bytes)
return 0;
}
-static int read_emulate(struct kvm_vcpu *vcpu, gpa_t gpa,
+static int read_emulate(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
void *val, int bytes)
{
return !kvm_vcpu_read_guest(vcpu, gpa, val, bytes);
}
-static int write_emulate(struct kvm_vcpu *vcpu, gpa_t gpa,
+static int write_emulate(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
void *val, int bytes)
{
- return emulator_write_phys(vcpu, gpa, val, bytes);
+ return emulator_write_phys(vcpu, gpa, gva, val, bytes);
}
static int write_mmio(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes, void *val)
@@ -6705,7 +6705,7 @@ static int emulator_read_write_onepage(unsigned long
addr, void *val,
return X86EMUL_PROPAGATE_FAULT;
}
- if (!ret && ops->read_write_emulate(vcpu, gpa, val, bytes))
+ if (!ret && ops->read_write_emulate(vcpu, gpa, addr, val, bytes))
return X86EMUL_CONTINUE;
/*
@@ -6874,7 +6874,7 @@ static int emulator_cmpxchg_emulated(struct
x86_emulate_ctxt *ctxt,
if (!exchanged)
return X86EMUL_CMPXCHG_FAILED;
- kvm_page_track_write(vcpu, gpa, new, bytes);
+ kvm_page_track_write(vcpu, gpa, addr, new, bytes);
return X86EMUL_CONTINUE;
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 7efa386449d1..e0c7c17a439d 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1854,7 +1854,7 @@ static int kvmgt_page_track_remove(unsigned long handle,
u64 gfn)
return 0;
}
-static void kvmgt_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
+static void kvmgt_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva,
const u8 *val, int len,
struct kvm_page_track_notifier_node *node)
{
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