diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/kernel/prom.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index f83056297441..d9bd6555f980 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -658,6 +658,35 @@ static void __init early_reserve_mem(void) #endif } +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +static bool tm_disabled __initdata; + +static int __init parse_ppc_tm(char *str) +{ + bool res; + + if (kstrtobool(str, &res)) + return -EINVAL; + + tm_disabled = !res; + + return 0; +} +early_param("ppc_tm", parse_ppc_tm); + +static void __init tm_init(void) +{ + if (tm_disabled) { + pr_info("Disabling hardware transactional memory (HTM)\n"); + cur_cpu_spec->cpu_user_features2 &= + ~(PPC_FEATURE2_HTM_NOSC | PPC_FEATURE2_HTM); + cur_cpu_spec->cpu_features &= ~CPU_FTR_TM; + } +} +#else +static void tm_init(void) { } +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ + void __init early_init_devtree(void *params) { phys_addr_t limit; @@ -767,6 +796,8 @@ void __init early_init_devtree(void *params) powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; #endif + tm_init(); + DBG(" <- early_init_devtree()\n"); } |