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-rw-r--r--arch/mips/kernel/r4k_switch.S36
1 files changed, 3 insertions, 33 deletions
diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S
index abacac7c33ef..81ca3f70fe29 100644
--- a/arch/mips/kernel/r4k_switch.S
+++ b/arch/mips/kernel/r4k_switch.S
@@ -28,6 +28,7 @@
*/
#define ST_OFF (_THREAD_SIZE - 32 - PT_SIZE + PT_STATUS)
+#ifndef USE_ALTERNATE_RESUME_IMPL
/*
* task_struct *resume(task_struct *prev, task_struct *next,
* struct thread_info *next_ti, s32 fp_save)
@@ -87,18 +88,6 @@
PTR_ADDU t0, $28, _THREAD_SIZE - 32
set_saved_sp t0, t1, t2
-#ifdef CONFIG_MIPS_MT_SMTC
- /* Read-modify-writes of Status must be atomic on a VPE */
- mfc0 t2, CP0_TCSTATUS
- ori t1, t2, TCSTATUS_IXMT
- mtc0 t1, CP0_TCSTATUS
- andi t2, t2, TCSTATUS_IXMT
- _ehb
- DMT 8 # dmt t0
- move t1,ra
- jal mips_ihb
- move ra,t1
-#endif /* CONFIG_MIPS_MT_SMTC */
mfc0 t1, CP0_STATUS /* Do we really need this? */
li a3, 0xff01
and t1, a3
@@ -107,22 +96,12 @@
and a2, a3
or a2, t1
mtc0 a2, CP0_STATUS
-#ifdef CONFIG_MIPS_MT_SMTC
- _ehb
- andi t0, t0, VPECONTROL_TE
- beqz t0, 1f
- emt
-1:
- mfc0 t1, CP0_TCSTATUS
- xori t1, t1, TCSTATUS_IXMT
- or t1, t1, t2
- mtc0 t1, CP0_TCSTATUS
- _ehb
-#endif /* CONFIG_MIPS_MT_SMTC */
move v0, a0
jr ra
END(resume)
+#endif /* USE_ALTERNATE_RESUME_IMPL */
+
/*
* Save a thread's fp context.
*/
@@ -176,19 +155,10 @@ LEAF(_restore_msa)
#define FPU_DEFAULT 0x00000000
LEAF(_init_fpu)
-#ifdef CONFIG_MIPS_MT_SMTC
- /* Rather than manipulate per-VPE Status, set per-TC bit in TCStatus */
- mfc0 t0, CP0_TCSTATUS
- /* Bit position is the same for Status, TCStatus */
- li t1, ST0_CU1
- or t0, t1
- mtc0 t0, CP0_TCSTATUS
-#else /* Normal MIPS CU1 enable */
mfc0 t0, CP0_STATUS
li t1, ST0_CU1
or t0, t1
mtc0 t0, CP0_STATUS
-#endif /* CONFIG_MIPS_MT_SMTC */
enable_fpu_hazard
li t1, FPU_DEFAULT