KVM: PPC: Remove unused kvm_unmap_hva callback

Since commit fb1522e099f0 ("KVM: update to new mmu_notifier semantic
v2", 2017-08-31), the MMU notifier code in KVM no longer calls the
kvm_unmap_hva callback.  This removes the PPC implementations of
kvm_unmap_hva().

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 1f53b56..6b69d79 100644 (file)
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -60,7 +60,6 @@
 
 #define KVM_ARCH_WANT_MMU_NOTIFIER
 
-extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
 extern int kvm_unmap_hva_range(struct kvm *kvm,
                               unsigned long start, unsigned long end);
 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 7765a80..23cfaef 100644 (file)
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -295,7 +295,6 @@ struct kvmppc_ops {
                                     const struct kvm_userspace_memory_region *mem,
                                     const struct kvm_memory_slot *old,
                                     const struct kvm_memory_slot *new);
-       int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
        int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
                           unsigned long end);
        int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 234531d..97d4a11 100644 (file)
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -819,12 +819,6 @@ void kvmppc_core_commit_memory_region(struct kvm *kvm,
        kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
 }
 
-int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
-{
-       return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
-}
-EXPORT_SYMBOL_GPL(kvm_unmap_hva);
-
 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
 {
        return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);

diff --git a/arch/powerpc/kvm/book3s.h b/arch/powerpc/kvm/book3s.h
index d2b3ec0..4ad5e28 100644 (file)
--- a/arch/powerpc/kvm/book3s.h
+++ b/arch/powerpc/kvm/book3s.h
@@ -14,7 +14,6 @@
 
 extern void kvmppc_core_flush_memslot_hv(struct kvm *kvm,
                                         struct kvm_memory_slot *memslot);
-extern int kvm_unmap_hva_hv(struct kvm *kvm, unsigned long hva);
 extern int kvm_unmap_hva_range_hv(struct kvm *kvm, unsigned long start,
                                  unsigned long end);
 extern int kvm_age_hva_hv(struct kvm *kvm, unsigned long start,

diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index ef243fe..a670fa5 100644 (file)
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -877,15 +877,6 @@ static int kvm_unmap_rmapp(struct kvm *kvm, struct kvm_memory_slot *memslot,
        return 0;
 }
 
-int kvm_unmap_hva_hv(struct kvm *kvm, unsigned long hva)
-{
-       hva_handler_fn handler;
-
-       handler = kvm_is_radix(kvm) ? kvm_unmap_radix : kvm_unmap_rmapp;
-       kvm_handle_hva(kvm, hva, handler);
-       return 0;
-}
-
 int kvm_unmap_hva_range_hv(struct kvm *kvm, unsigned long start, unsigned long end)
 {
        hva_handler_fn handler;

diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c
index c32e9bf..6651f73 100644 (file)
--- a/arch/powerpc/kvm/book3s_64_vio_hv.c
+++ b/arch/powerpc/kvm/book3s_64_vio_hv.c
@@ -450,7 +450,7 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 
                /*
                 * Synchronize with the MMU notifier callbacks in
-                * book3s_64_mmu_hv.c (kvm_unmap_hva_hv etc.).
+                * book3s_64_mmu_hv.c (kvm_unmap_hva_range_hv etc.).
                 * While we have the rmap lock, code running on other CPUs
                 * cannot finish unmapping the host real page that backs
                 * this guest real page, so we are OK to access the host

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 9cb9448..4863ab8 100644 (file)
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -4351,7 +4351,6 @@ static struct kvmppc_ops kvm_ops_hv = {
        .flush_memslot  = kvmppc_core_flush_memslot_hv,
        .prepare_memory_region = kvmppc_core_prepare_memory_region_hv,
        .commit_memory_region  = kvmppc_core_commit_memory_region_hv,
-       .unmap_hva = kvm_unmap_hva_hv,
        .unmap_hva_range = kvm_unmap_hva_range_hv,
        .age_hva  = kvm_age_hva_hv,
        .test_age_hva = kvm_test_age_hva_hv,

diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 3ae7523..d3f304d 100644 (file)
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -277,15 +277,6 @@ static void do_kvm_unmap_hva(struct kvm *kvm, unsigned long start,
        }
 }
 
-static int kvm_unmap_hva_pr(struct kvm *kvm, unsigned long hva)
-{
-       trace_kvm_unmap_hva(hva);
-
-       do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE);
-
-       return 0;
-}
-
 static int kvm_unmap_hva_range_pr(struct kvm *kvm, unsigned long start,
                                  unsigned long end)
 {
@@ -1773,7 +1764,6 @@ static struct kvmppc_ops kvm_ops_pr = {
        .flush_memslot = kvmppc_core_flush_memslot_pr,
        .prepare_memory_region = kvmppc_core_prepare_memory_region_pr,
        .commit_memory_region = kvmppc_core_commit_memory_region_pr,
-       .unmap_hva = kvm_unmap_hva_pr,
        .unmap_hva_range = kvm_unmap_hva_range_pr,
        .age_hva  = kvm_age_hva_pr,
        .test_age_hva = kvm_test_age_hva_pr,

diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index 423b213..c878b4f 100644 (file)
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -724,7 +724,7 @@ int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
 
 /************* MMU Notifiers *************/
 
-int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
+static int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
 {
        trace_kvm_unmap_hva(hva);
 

diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h
index 85785a3..2f9a882 100644 (file)
--- a/arch/powerpc/kvm/trace_pr.h
+++ b/arch/powerpc/kvm/trace_pr.h
@@ -254,21 +254,6 @@ TRACE_EVENT(kvm_exit,
                )
 );
 
-TRACE_EVENT(kvm_unmap_hva,
-       TP_PROTO(unsigned long hva),
-       TP_ARGS(hva),
-
-       TP_STRUCT__entry(
-               __field(        unsigned long,  hva             )
-       ),
-
-       TP_fast_assign(
-               __entry->hva            = hva;
-       ),
-
-       TP_printk("unmap hva 0x%lx\n", __entry->hva)
-);
-
 #endif /* _TRACE_KVM_H */
 
 /* This part must be outside protection */