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From: Ian Lepore <ian@FreeBSD.org>
Date: Sun, 9 Mar 2014 14:54:05 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r262949 - head/sys/arm/arm
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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));