Re: [PATCH v4 15/29] KVM: drm/i915/gvt: Drop @vcpu from KVM's ->track_write() hook

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On 7/29/2023 4:35 AM, Sean Christopherson wrote:
Drop @vcpu from KVM's ->track_write() hook provided for external users of
the page-track APIs now that KVM itself doesn't use the page-track
mechanism.

Reviewed-by: Yan Zhao <yan.y.zhao@xxxxxxxxx>
Tested-by: Yongwei Ma <yongwei.ma@xxxxxxxxx>
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
  arch/x86/include/asm/kvm_page_track.h |  5 ++---
  arch/x86/kvm/mmu/page_track.c         |  2 +-
  drivers/gpu/drm/i915/gvt/kvmgt.c      | 10 ++++------
  3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/kvm_page_track.h b/arch/x86/include/asm/kvm_page_track.h
index eb186bc57f6a..8c4d216e3b2b 100644
--- a/arch/x86/include/asm/kvm_page_track.h
+++ b/arch/x86/include/asm/kvm_page_track.h
@@ -26,14 +26,13 @@ struct kvm_page_track_notifier_node {
  	 * It is called when guest is writing the write-tracked page
  	 * and write emulation is finished at that time.
  	 *
-	 * @vcpu: the vcpu where the write access happened.
  	 * @gpa: the physical 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)(gpa_t gpa, 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
diff --git a/arch/x86/kvm/mmu/page_track.c b/arch/x86/kvm/mmu/page_track.c
index 23088c90d2fd..891e5cc52b45 100644
--- a/arch/x86/kvm/mmu/page_track.c
+++ b/arch/x86/kvm/mmu/page_track.c
@@ -272,7 +272,7 @@ 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(gpa, new, bytes, n);
  	srcu_read_unlock(&head->track_srcu, idx);
kvm_mmu_track_write(vcpu, gpa, new, bytes);
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 034be0655daa..e9276500435d 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -106,9 +106,8 @@ struct gvt_dma {
  #define vfio_dev_to_vgpu(vfio_dev) \
  	container_of((vfio_dev), struct intel_vgpu, vfio_device)
-static void kvmgt_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
-		const u8 *val, int len,
-		struct kvm_page_track_notifier_node *node);
+static void kvmgt_page_track_write(gpa_t gpa, const u8 *val, int len,
+				   struct kvm_page_track_notifier_node *node);
  static void kvmgt_page_track_flush_slot(struct kvm *kvm,
  		struct kvm_memory_slot *slot,
  		struct kvm_page_track_notifier_node *node);
@@ -1603,9 +1602,8 @@ int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn)
  	return 0;
  }
-static void kvmgt_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
-		const u8 *val, int len,
-		struct kvm_page_track_notifier_node *node)
+static void kvmgt_page_track_write(gpa_t gpa, const u8 *val, int len,
+				   struct kvm_page_track_notifier_node *node)
  {
  	struct intel_vgpu *info =
  		container_of(node, struct intel_vgpu, track_node);
Reviewed-by: Zhi Wang <zhi.a.wang@xxxxxxxxx>



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