diff options
| -rw-r--r-- | sys/arch/amd64/amd64/machdep.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sys/arch/amd64/amd64/machdep.c b/sys/arch/amd64/amd64/machdep.c index 72de150..76c1a5f 100644 --- a/sys/arch/amd64/amd64/machdep.c +++ b/sys/arch/amd64/amd64/machdep.c @@ -481,14 +481,13 @@ void cpu_halt_others(void) { struct cpu_info *curcpu, *ci; - uint32_t ncpu; + uint32_t ncpu = cpu_count(); - if (rdmsr(IA32_GS_BASE) == 0) { - __ASMV("cli; hlt"); + if (rdmsr(IA32_GS_BASE) == 0 || ncpu <= 1) { + return; } curcpu = this_cpu(); - ncpu = cpu_count(); for (int i = 0; i < ncpu; ++i) { if ((ci = cpu_get(i)) == NULL) |