We can get memslot id from memslot->id directly

Signed-off-by: Xiao Guangrong <[email protected]>
---
 include/linux/kvm_host.h |    7 ++++++-
 virt/kvm/kvm_main.c      |   17 -----------------
 2 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ab42855..b1a7430 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -365,7 +365,6 @@ pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool 
write_fault,
                      bool *writable);
 pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
                         struct kvm_memory_slot *slot, gfn_t gfn);
-int memslot_id(struct kvm *kvm, gfn_t gfn);
 void kvm_release_pfn_dirty(pfn_t);
 void kvm_release_pfn_clean(pfn_t pfn);
 void kvm_set_pfn_dirty(pfn_t pfn);
@@ -388,6 +387,12 @@ int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct 
gfn_to_hva_cache *ghc,
 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
+
+static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
+{
+       return gfn_to_memslot(kvm, gfn)->id;
+}
+
 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 1fa0d29..cf90f28 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -997,23 +997,6 @@ out:
        return size;
 }
 
-int memslot_id(struct kvm *kvm, gfn_t gfn)
-{
-       int i;
-       struct kvm_memslots *slots = kvm_memslots(kvm);
-       struct kvm_memory_slot *memslot = NULL;
-
-       for (i = 0; i < slots->nmemslots; ++i) {
-               memslot = &slots->memslots[i];
-
-               if (gfn >= memslot->base_gfn
-                   && gfn < memslot->base_gfn + memslot->npages)
-                       break;
-       }
-
-       return memslot - slots->memslots;
-}
-
 static unsigned long gfn_to_hva_many(struct kvm_memory_slot *slot, gfn_t gfn,
                                     gfn_t *nr_pages)
 {
-- 
1.7.4

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