"cpu_probe" is called both by BP and APs, but reserving exception vector
(like 0x0-0x1000) called by "cpu_probe" need once and calling on BPs is
too late since memblock is unavailable at that time.
So, reserve exception vector ONLY by BP.
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
