This doesn't require write access to the CPU structure.

Signed-off-by: Greg Kurz <groug@kaod.org>
---
 target/ppc/mmu-radix64.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/ppc/mmu-radix64.h b/target/ppc/mmu-radix64.h
index 96228546aa85..f28c5794d071 100644
--- a/target/ppc/mmu-radix64.h
+++ b/target/ppc/mmu-radix64.h
@@ -55,9 +55,9 @@ static inline int ppc_radix64_get_prot_eaa(uint64_t pte)
            (pte & R_PTE_EAA_X ? PAGE_EXEC : 0);
 }
 
-static inline int ppc_radix64_get_prot_amr(PowerPCCPU *cpu)
+static inline int ppc_radix64_get_prot_amr(const PowerPCCPU *cpu)
 {
-    CPUPPCState *env = &cpu->env;
+    const CPUPPCState *env = &cpu->env;
     int amr = env->spr[SPR_AMR] >> 62; /* We only care about key0 AMR63:62 */
     int iamr = env->spr[SPR_IAMR] >> 62; /* We only care about key0 IAMR63:62 */