KVM: PPC: Book3S HV: Make a HPTE removal function available

This makes a HPTE removal function, kvmppc_do_h_remove(), available
outside book3s_hv_rm_mmu.c.  This will be used by the HPT writing
code.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

2 files changed, 16 insertions, 6 deletions

diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index fea768f21cd7..46763d10ad52 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -160,6 +160,9 @@ extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
                         long pte_index, unsigned long pteh, unsigned long ptel,
                         pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
+extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
+                        unsigned long pte_index, unsigned long avpn,
+                        unsigned long *hpret);
 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
                         struct kvm_memory_slot *memslot, unsigned long *map);
 
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index ed563a5f25c8..fc3da3208fda 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -365,11 +365,10 @@ static inline int try_lock_tlbie(unsigned int *lock)
         return old == 0;
 }
 
-long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
-                     unsigned long pte_index, unsigned long avpn,
-                     unsigned long va)
+long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
+                        unsigned long pte_index, unsigned long avpn,
+                        unsigned long *hpret)
 {
-        struct kvm *kvm = vcpu->kvm;
         unsigned long *hpte;
         unsigned long v, r, rb;
         struct revmap_entry *rev;
@@ -411,10 +410,18 @@ long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
         note_hpte_modification(kvm, rev);
         unlock_hpte(hpte, 0);
 
-        vcpu->arch.gpr[4] = v;
-        vcpu->arch.gpr[5] = r;
+        hpret[0] = v;
+        hpret[1] = r;
         return H_SUCCESS;
 }
+EXPORT_SYMBOL_GPL(kvmppc_do_h_remove);
+
+long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
+                     unsigned long pte_index, unsigned long avpn)
+{
+        return kvmppc_do_h_remove(vcpu->kvm, flags, pte_index, avpn,
+                                  &vcpu->arch.gpr[4]);
+}
 
 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu)
 {