cpu_probe is called by BP an APs, but reserving exception vector 0x0-0x1000 need once. Call it on cpu 0. Signed-off-by: Huang Pei <huangpei@xxxxxxxxxxx> --- arch/mips/kernel/cpu-probe.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index b406d8bfb15a..6939d0de2a03 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1581,7 +1581,9 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu) __cpu_name[cpu] = "Broadcom BMIPS4380"; set_elf_platform(cpu, "bmips4380"); c->options |= MIPS_CPU_RIXI; - reserve_exception_space(0x400, VECTORSPACING * 64); + if (cpu == 0) { + reserve_exception_space(0x400, VECTORSPACING * 64); + } } else { c->cputype = CPU_BMIPS4350; __cpu_name[cpu] = "Broadcom BMIPS4350"; @@ -1598,7 +1600,9 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu) __cpu_name[cpu] = "Broadcom BMIPS5000"; set_elf_platform(cpu, "bmips5000"); c->options |= MIPS_CPU_ULRI | MIPS_CPU_RIXI; - reserve_exception_space(0x1000, VECTORSPACING * 64); + if (cpu == 0) { + reserve_exception_space(0x1000, VECTORSPACING * 64); + } break; } } @@ -1992,12 +1996,13 @@ void cpu_probe(void) */ loongson3_cpucfg_synthesize_data(c); + if (cpu == 0) { #ifdef CONFIG_64BIT - if (cpu == 0) __ua_limit = ~((1ull << cpu_vmbits) - 1); #endif + reserve_exception_space(0, 0x1000); + } - reserve_exception_space(0, 0x1000); } void cpu_report(void) -- 2.30.2