diff mbox series

[v3,16/28] drm/i915/gvt: Don't bother removing write-protection on to-be-deleted slot

Message ID 20230513003600.818142-17-seanjc@google.com
State New
Headers
Series drm/i915/gvt: KVM: KVMGT fixes and page-track cleanups |

Commit Message

Sean Christopherson May 13, 2023, 12:35 a.m. UTC 
  When handling a slot "flush", don't call back into KVM to drop write
protection for gfns in the slot.  Now that KVM rejects attempts to move
memory slots while KVMGT is attached, the only time a slot is "flushed"
is when it's being removed, i.e. the memslot and all its write-tracking
metadata is about to be deleted.

Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 drivers/gpu/drm/i915/gvt/kvmgt.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index aaebb44c139f..c309a77f495f 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1629,14 +1629,8 @@  static void kvmgt_page_track_flush_slot(struct kvm *kvm,
 
 	for (i = 0; i < slot->npages; i++) {
 		gfn = slot->base_gfn + i;
-		if (kvmgt_gfn_is_write_protected(info, gfn)) {
-			write_lock(&kvm->mmu_lock);
-			kvm_slot_page_track_remove_page(kvm, slot, gfn,
-						KVM_PAGE_TRACK_WRITE);
-			write_unlock(&kvm->mmu_lock);
-
+		if (kvmgt_gfn_is_write_protected(info, gfn))
 			kvmgt_protect_table_del(info, gfn);
-		}
 	}
 	mutex_unlock(&info->vgpu_lock);
 }