diff options
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index f7faa3fb79b..71620e19827 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -25,6 +25,8 @@ #include <asm/system.h> #include <asm/watch.h> #include <asm/spram.h> +#include <asm/uaccess.h> + /* * Not all of the MIPS CPUs have the "wait" instruction available. Moreover, * the implementation of the "wait" feature differs between CPU families. This @@ -987,6 +989,12 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) } } +#ifdef CONFIG_64BIT +/* For use by uaccess.h */ +u64 __ua_limit; +EXPORT_SYMBOL(__ua_limit); +#endif + const char *__cpu_name[NR_CPUS]; const char *__elf_platform; @@ -1064,6 +1072,11 @@ __cpuinit void cpu_probe(void) c->srsets = 1; cpu_probe_vmbits(c); + +#ifdef CONFIG_64BIT + if (cpu == 0) + __ua_limit = ~((1ull << cpu_vmbits) - 1); +#endif } __cpuinit void cpu_report(void) |