| Message ID | 1959391340974525@web19e.yandex.ru |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
From: Kirill Tkhai <tkhai@yandex.ru> Date: Fri, 29 Jun 2012 16:55:25 +0400 > FPU state is saved into task_struct of created task. Current task continues > use of the state, so it needs TIF_USEDFPU flag is not cleared. > > Created task receives fresh FPU and cleared TIF_USEFPU flag is required for it. > > Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Applied. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index fe6787c..3c6dec4 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -358,9 +358,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, put_psr(get_psr() | PSR_EF); fpsave(&p->thread.float_regs[0], &p->thread.fsr, &p->thread.fpqueue[0], &p->thread.fpqdepth); -#ifdef CONFIG_SMP - clear_thread_flag(TIF_USEDFPU); -#endif } /* @@ -438,6 +435,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, #ifdef CONFIG_SMP /* FPU must be disabled on SMP. */ childregs->psr &= ~PSR_EF; + clear_tsk_thread_flag(p, TIF_USEDFPU); #endif /* Set the return value for the child. */
FPU state is saved into task_struct of created task. Current task continues use of the state, so it needs TIF_USEDFPU flag is not cleared. Created task receives fresh FPU and cleared TIF_USEFPU flag is required for it. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> --- arch/sparc/kernel/process_32.c | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html