Author: mmel
Date: Sun Mar 26 08:36:20 2017
New Revision: 315973
URL: https://svnweb.freebsd.org/changeset/base/315973
Log:
Save VFP state on fork().
Update the copy of VFP state in PCB before it is cloned for new process.
MFC after: 2 weeks
Modified:
head/sys/arm/arm/vm_machdep.c
Modified: head/sys/arm/arm/vm_machdep.c
==============================================================================
--- head/sys/arm/arm/vm_machdep.c Sun Mar 26 01:10:59 2017
(r315972)
+++ head/sys/arm/arm/vm_machdep.c Sun Mar 26 08:36:20 2017
(r315973)
@@ -111,6 +111,14 @@ cpu_fork(register struct thread *td1, re
pmap_use_minicache(td2->td_kstack, td2->td_kstack_pages * PAGE_SIZE);
#endif
#endif
+#ifdef VFP
+ /* Store actual state of VFP */
+ if (curthread == td1) {
+ critical_enter();
+ vfp_store(&td1->td_pcb->pcb_vfpstate, false);
+ critical_exit();
+ }
+#endif
td2->td_pcb = pcb2;
/* Clone td1's pcb */
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