diff options
Diffstat (limited to 'target/ppc/cpu_init.c')
| -rw-r--r-- | target/ppc/cpu_init.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 899c4a586e..6e080ebda0 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -5700,6 +5700,33 @@ static void register_power9_mmu_sprs(CPUPPCState *env) #endif } +static void register_power10_hash_sprs(CPUPPCState *env) +{ + /* + * it's the OS responsability to generate a random value for the registers + * in each process' context. So, initialize it with 0 here. + */ + uint64_t hashkeyr_initial_value = 0, hashpkeyr_initial_value = 0; +#if defined(CONFIG_USER_ONLY) + /* in linux-user, setup the hash register with a random value */ + GRand *rand = g_rand_new(); + hashkeyr_initial_value = + ((uint64_t)g_rand_int(rand) << 32) | (uint64_t)g_rand_int(rand); + hashpkeyr_initial_value = + ((uint64_t)g_rand_int(rand) << 32) | (uint64_t)g_rand_int(rand); + g_rand_free(rand); +#endif + spr_register(env, SPR_HASHKEYR, "HASHKEYR", + SPR_NOACCESS, SPR_NOACCESS, + &spr_read_generic, &spr_write_generic, + hashkeyr_initial_value); + spr_register_hv(env, SPR_HASHPKEYR, "HASHPKEYR", + SPR_NOACCESS, SPR_NOACCESS, + SPR_NOACCESS, SPR_NOACCESS, + &spr_read_generic, &spr_write_generic, + hashpkeyr_initial_value); +} + /* * Initialize PMU counter overflow timers for Power8 and * newer Power chips when using TCG. @@ -6518,6 +6545,7 @@ static void init_proc_POWER10(CPUPPCState *env) register_power8_book4_sprs(env); register_power8_rpr_sprs(env); register_power9_mmu_sprs(env); + register_power10_hash_sprs(env); /* FIXME: Filter fields properly based on privilege level */ spr_register_kvm_hv(env, SPR_PSSCR, "PSSCR", NULL, NULL, NULL, NULL, |