X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fprocess.c;h=7429ad09fbe3e1178ad37f0e34ed2f1651ac70ac;hb=432c6bacbd0c;hp=813ed7829c610a43228b85dc34e039f537c3aa32;hpb=8cd8cbd4906126951f1bd6ab8a28ee57f0dc1efc;p=cascardo%2Flinux.git

diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 813ed7829c61..7429ad09fbe3 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -30,6 +30,7 @@
 #include <asm/asm.h>
 #include <asm/bootinfo.h>
 #include <asm/cpu.h>
+#include <asm/dsemul.h>
 #include <asm/dsp.h>
 #include <asm/fpu.h>
 #include <asm/msa.h>
@@ -68,11 +69,22 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp)
 	lose_fpu(0);
 	clear_thread_flag(TIF_MSA_CTX_LIVE);
 	clear_used_math();
+	atomic_set(&current->thread.bd_emu_frame, BD_EMUFRAME_NONE);
 	init_dsp();
 	regs->cp0_epc = pc;
 	regs->regs[29] = sp;
 }
 
+void exit_thread(struct task_struct *tsk)
+{
+	/*
+	 * User threads may have allocated a delay slot emulation frame.
+	 * If so, clean up that allocation.
+	 */
+	if (!(current->flags & PF_KTHREAD))
+		dsemul_thread_cleanup(tsk);
+}
+
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {
 	/*
@@ -159,6 +171,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 	clear_tsk_thread_flag(p, TIF_FPUBOUND);
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
+	atomic_set(&p->thread.bd_emu_frame, BD_EMUFRAME_NONE);
+
 	if (clone_flags & CLONE_SETTLS)
 		ti->tp_value = regs->regs[7];