From 1d74f6bc85cbdc4601e5aea1e67ccbd259f0c7f4 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Mon, 9 May 2005 13:16:07 +0000 Subject: __compute_return_epc() uses CFC1 instruction which might result in a coprocessor unusable exception since the process can lose its fpu context by preemption. Signed-off-by: Ralf Baechle --- include/asm-mips/fpu.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-mips/fpu.h b/include/asm-mips/fpu.h index ea24e733b1b..9c828b1f821 100644 --- a/include/asm-mips/fpu.h +++ b/include/asm-mips/fpu.h @@ -80,9 +80,14 @@ do { \ #define clear_fpu_owner() clear_thread_flag(TIF_USEDFPU) +static inline int __is_fpu_owner(void) +{ + return test_thread_flag(TIF_USEDFPU); +} + static inline int is_fpu_owner(void) { - return cpu_has_fpu && test_thread_flag(TIF_USEDFPU); + return cpu_has_fpu && __is_fpu_owner(); } static inline void own_fpu(void) @@ -127,7 +132,7 @@ static inline void restore_fp(struct task_struct *tsk) static inline fpureg_t *get_fpu_regs(struct task_struct *tsk) { if (cpu_has_fpu) { - if ((tsk == current) && is_fpu_owner()) + if ((tsk == current) && __is_fpu_owner()) _save_fp(current); return tsk->thread.fpu.hard.fpr; } -- cgit v1.2.3