Author: ian
Date: Sun Mar 9 14:54:05 2014
New Revision: 262949
URL: http://svnweb.freebsd.org/changeset/base/262949
Log:
When a thread begins life it doesn't own the VFP hardware state on any cpu.
Modified:
head/sys/arm/arm/machdep.c
head/sys/arm/arm/vm_machdep.c
Modified: head/sys/arm/arm/machdep.c
==============================================================================
--- head/sys/arm/arm/machdep.c Sun Mar 9 14:24:05 2014 (r262948)
+++ head/sys/arm/arm/machdep.c Sun Mar 9 14:54:05 2014 (r262949)
@@ -993,6 +993,7 @@ init_proc0(vm_offset_t kstack)
thread0.td_pcb = (struct pcb *)
(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
thread0.td_pcb->pcb_flags = 0;
+ thread0.td_pcb->pcb_vfpcpu = -1;
thread0.td_frame = &proc0_tf;
pcpup->pc_curpcb = thread0.td_pcb;
}
Modified: head/sys/arm/arm/vm_machdep.c
==============================================================================
--- head/sys/arm/arm/vm_machdep.c Sun Mar 9 14:24:05 2014
(r262948)
+++ head/sys/arm/arm/vm_machdep.c Sun Mar 9 14:54:05 2014
(r262949)
@@ -146,6 +146,7 @@ cpu_fork(register struct thread *td1, re
bcopy(&td1->td_proc->p_md, mdp2, sizeof(*mdp2));
pcb2->un_32.pcb32_sp = td2->td_kstack +
USPACE_SVC_STACK_TOP - sizeof(*pcb2);
+ pcb2->pcb_vfpcpu = -1;
pmap_activate(td2);
td2->td_frame = tf = (struct trapframe *)STACKALIGN(
pcb2->un_32.pcb32_sp - sizeof(struct trapframe));
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