diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/amd64/amd64/machdep.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/arch/amd64/amd64/machdep.c b/sys/arch/amd64/amd64/machdep.c index af00c5a..d310460 100644 --- a/sys/arch/amd64/amd64/machdep.c +++ b/sys/arch/amd64/amd64/machdep.c @@ -298,6 +298,10 @@ this_cpu(void) { struct cpu_info *ci; + if (rdmsr(IA32_GS_BASE) == 0) { + return NULL; + } + /* * This might look crazy but we are just leveraging the "m" * constraint to add the offset of the self field within |