Module: xenomai-3
Branch: next
Commit: 24f4f3d8609cf1b9bfc9f3055211657cd6bf7d28
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=24f4f3d8609cf1b9bfc9f3055211657cd6bf7d28
Author: Gilles Chanteperdrix <gilles.chanteperd...@xenomai.org>
Date: Fri Nov 20 14:50:28 2015 +0100
cobalt/fpu: stall head domain to handle fpu fault
Handling an FPU fault and setting the fpu holder must be atomic.
---
kernel/cobalt/posix/process.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/kernel/cobalt/posix/process.c b/kernel/cobalt/posix/process.c
index cc056ef..788a24a 100644
--- a/kernel/cobalt/posix/process.c
+++ b/kernel/cobalt/posix/process.c
@@ -731,11 +731,16 @@ static inline int handle_exception(struct ipipe_trap_data
*d)
if (xnarch_fault_fpu_p(d)) {
#ifdef CONFIG_XENO_ARCH_FPU
+ spl_t s;
+
/* FPU exception received in primary mode. */
+ splhigh(s);
if (xnarch_handle_fpu_fault(sched->fpuholder, thread, d)) {
sched->fpuholder = thread;
+ splexit(s);
return 1;
}
+ splexit(s);
#endif /* CONFIG_XENO_ARCH_FPU */
print_symbol("invalid use of FPU in Xenomai context at %s\n",
xnarch_fault_pc(d));
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