KVM: Remove memory alias support

As advertised in feature-removal-schedule.txt.  Equivalent support is provided
by overlapping memory regions.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 4 insertions, 14 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 84a090644d9d..65417e3d8462 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -841,7 +841,7 @@ int kvm_is_error_hva(unsigned long addr)
 }
 EXPORT_SYMBOL_GPL(kvm_is_error_hva);
 
-struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn)
+struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
 {
         int i;
         struct kvm_memslots *slots = kvm_memslots(kvm);
@@ -855,20 +855,13 @@ struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn)
         }
         return NULL;
 }
-EXPORT_SYMBOL_GPL(gfn_to_memslot_unaliased);
-
-struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
-        gfn = unalias_gfn(kvm, gfn);
-        return gfn_to_memslot_unaliased(kvm, gfn);
-}
+EXPORT_SYMBOL_GPL(gfn_to_memslot);
 
 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
 {
         int i;
         struct kvm_memslots *slots = kvm_memslots(kvm);
 
-        gfn = unalias_gfn_instantiation(kvm, gfn);
         for (i = 0; i < KVM_MEMORY_SLOTS; ++i) {
                 struct kvm_memory_slot *memslot = &slots->memslots[i];
 
@@ -913,7 +906,6 @@ int memslot_id(struct kvm *kvm, gfn_t gfn)
         struct kvm_memslots *slots = kvm_memslots(kvm);
         struct kvm_memory_slot *memslot = NULL;
 
-        gfn = unalias_gfn(kvm, gfn);
         for (i = 0; i < slots->nmemslots; ++i) {
                 memslot = &slots->memslots[i];
 
@@ -934,8 +926,7 @@ unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn)
 {
         struct kvm_memory_slot *slot;
 
-        gfn = unalias_gfn_instantiation(kvm, gfn);
-        slot = gfn_to_memslot_unaliased(kvm, gfn);
+        slot = gfn_to_memslot(kvm, gfn);
         if (!slot || slot->flags & KVM_MEMSLOT_INVALID)
                 return bad_hva();
         return gfn_to_hva_memslot(slot, gfn);
@@ -1202,8 +1193,7 @@ void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
 {
         struct kvm_memory_slot *memslot;
 
-        gfn = unalias_gfn(kvm, gfn);
-        memslot = gfn_to_memslot_unaliased(kvm, gfn);
+        memslot = gfn_to_memslot(kvm, gfn);
         if (memslot && memslot->dirty_bitmap) {
                 unsigned long rel_gfn = gfn - memslot->base_gfn;