diff options
Diffstat (limited to 'sys/amd64/amd64/vm_machdep.c')
| -rw-r--r-- | sys/amd64/amd64/vm_machdep.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c index 6e60f2b3faff..a17ddd4ba6d8 100644 --- a/sys/amd64/amd64/vm_machdep.c +++ b/sys/amd64/amd64/vm_machdep.c @@ -198,7 +198,6 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) bcopy(&p1->p_md, mdp2, sizeof(*mdp2)); /* - * Create a new fresh stack for the new process. * Copy the trap frame for the return to user mode as if from a * syscall. This copies most of the user mode register values. */ @@ -606,7 +605,10 @@ cpu_copy_thread(struct thread *td, struct thread *td0) /* - * Create a new fresh stack for the new thread. + * Copy user general-purpose registers. + * + * Some of these registers are rewritten by cpu_set_upcall() + * and linux_set_upcall_kse(). */ bcopy(td0->td_frame, td->td_frame, sizeof(struct trapframe)); |