diff --git a/target/ppc/mmu-hash32.h b/target/ppc/mmu-hash32.h
index 898021f0d8..30e35718a7 100644
--- a/target/ppc/mmu-hash32.h
+++ b/target/ppc/mmu-hash32.h
@@ -5,8 +5,8 @@
 
 hwaddr get_pteg_offset32(PowerPCCPU *cpu, hwaddr hash);
 hwaddr ppc_hash32_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr);
-int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr address, int rw,
-                                int mmu_idx);
+int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr address,
+                                MMUAccessType access_type, int mmu_idx);
 
 /*
  * Segment register definitions
diff --git a/target/ppc/mmu-hash64.h b/target/ppc/mmu-hash64.h
index 4b8b8e7950..3e8a8eec1f 100644
--- a/target/ppc/mmu-hash64.h
+++ b/target/ppc/mmu-hash64.h
@@ -8,8 +8,8 @@ void dump_slb(PowerPCCPU *cpu);
 int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot,
                   target_ulong esid, target_ulong vsid);
 hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr);
-int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr address, int rw,
-                                int mmu_idx);
+int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr address,
+                                MMUAccessType access_type, int mmu_idx);
 void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu,
                                target_ulong pte_index,
                                target_ulong pte0, target_ulong pte1);
diff --git a/target/ppc/mmu-radix64.h b/target/ppc/mmu-radix64.h
index f28c5794d0..94bd72cb38 100644
--- a/target/ppc/mmu-radix64.h
+++ b/target/ppc/mmu-radix64.h
@@ -44,8 +44,8 @@
 
 #ifdef TARGET_PPC64
 
-int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
-                                 int mmu_idx);
+int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
+                                 MMUAccessType access_type, int mmu_idx);
 hwaddr ppc_radix64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr);
 
 static inline int ppc_radix64_get_prot_eaa(uint64_t pte)
diff --git a/target/ppc/mmu-hash32.c b/target/ppc/mmu-hash32.c
index 744a763f44..d51be59f95 100644
--- a/target/ppc/mmu-hash32.c
+++ b/target/ppc/mmu-hash32.c
@@ -416,8 +416,8 @@ static hwaddr ppc_hash32_pte_raddr(target_ulong sr, ppc_hash_pte32_t pte,
     return (rpn & ~mask) | (eaddr & mask);
 }
 
-int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
-                                int mmu_idx)
+int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
+                                MMUAccessType access_type, int mmu_idx)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
@@ -426,11 +426,8 @@ int ppc_hash32_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
     ppc_hash_pte32_t pte;
     int prot;
     int need_prot;
-    MMUAccessType access_type;
     hwaddr raddr;
 
-    assert((rwx == 0) || (rwx == 1) || (rwx == 2));
-    access_type = rwx;
     need_prot = prot_for_access_type(access_type);
 
     /* 1. Handle real mode accesses */
diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c
index f48b625f48..877a01a296 100644
--- a/target/ppc/mmu-hash64.c
+++ b/target/ppc/mmu-hash64.c
@@ -867,7 +867,7 @@ static int build_vrma_slbe(PowerPCCPU *cpu, ppc_slb_t *slb)
 }
 
 int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
-                                int rwx, int mmu_idx)
+                                MMUAccessType access_type, int mmu_idx)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
@@ -877,13 +877,9 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
     hwaddr ptex;
     ppc_hash_pte64_t pte;
     int exec_prot, pp_prot, amr_prot, prot;
-    MMUAccessType access_type;
     int need_prot;
     hwaddr raddr;
 
-    assert((rwx == 0) || (rwx == 1) || (rwx == 2));
-    access_type = rwx;
-
     /*
      * Note on LPCR usage: 970 uses HID4, but our special variant of
      * store_spr copies relevant fields into env->spr[SPR_LPCR].
diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c
index 7972153f23..f6d96f73b2 100644
--- a/target/ppc/mmu-radix64.c
+++ b/target/ppc/mmu-radix64.c
@@ -556,19 +556,16 @@ static int ppc_radix64_xlate(PowerPCCPU *cpu, vaddr eaddr,
     return 0;
 }
 
-int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
-                                 int mmu_idx)
+int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
+                                 MMUAccessType access_type, int mmu_idx)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
     int page_size, prot;
     bool relocation;
-    MMUAccessType access_type;
     hwaddr raddr;
 
     assert(!(msr_hv && cpu->vhyp));
-    assert((rwx == 0) || (rwx == 1) || (rwx == 2));
-    access_type = rwx;
 
     relocation = (access_type == MMU_INST_FETCH ? msr_ir : msr_dr);
     /* HV or virtual hypervisor Real Mode Access */
