i915: kvmgt: the KVM mmu_lock is now an rwlock

Adjust the KVMGT page tracking callbacks.

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: intel-gvt-dev@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 60f1a38..b434825 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1703,7 +1703,7 @@ static int kvmgt_page_track_add(unsigned long handle, u64 gfn)
                return -EINVAL;
        }
 
-       spin_lock(&kvm->mmu_lock);
+       write_lock(&kvm->mmu_lock);
 
        if (kvmgt_gfn_is_write_protected(info, gfn))
                goto out;
@@ -1712,7 +1712,7 @@ static int kvmgt_page_track_add(unsigned long handle, u64 gfn)
        kvmgt_protect_table_add(info, gfn);
 
 out:
-       spin_unlock(&kvm->mmu_lock);
+       write_unlock(&kvm->mmu_lock);
        srcu_read_unlock(&kvm->srcu, idx);
        return 0;
 }
@@ -1737,7 +1737,7 @@ static int kvmgt_page_track_remove(unsigned long handle, u64 gfn)
                return -EINVAL;
        }
 
-       spin_lock(&kvm->mmu_lock);
+       write_lock(&kvm->mmu_lock);
 
        if (!kvmgt_gfn_is_write_protected(info, gfn))
                goto out;
@@ -1746,7 +1746,7 @@ static int kvmgt_page_track_remove(unsigned long handle, u64 gfn)
        kvmgt_protect_table_del(info, gfn);
 
 out:
-       spin_unlock(&kvm->mmu_lock);
+       write_unlock(&kvm->mmu_lock);
        srcu_read_unlock(&kvm->srcu, idx);
        return 0;
 }
@@ -1772,7 +1772,7 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
        struct kvmgt_guest_info *info = container_of(node,
                                        struct kvmgt_guest_info, track_node);
 
-       spin_lock(&kvm->mmu_lock);
+       write_lock(&kvm->mmu_lock);
        for (i = 0; i < slot->npages; i++) {
                gfn = slot->base_gfn + i;
                if (kvmgt_gfn_is_write_protected(info, gfn)) {
@@ -1781,7 +1781,7 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
                        kvmgt_protect_table_del(info, gfn);
                }
        }
-       spin_unlock(&kvm->mmu_lock);
+       write_unlock(&kvm->mmu_lock);
 }
 
 static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)