Merge branch 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr

Pull MIPS updates from Ralf Baechle:
 - Support for Imgtec's Aptiv family of MIPS cores.
 - Improved detection of BCM47xx configurations.
 - Fix hiberation for certain configurations.
 - Add support for the Chinese Loongson 3 CPU, a MIPS64 R2 core and
   systems.
 - Detection and support for the MIPS P5600 core.
 - A few more random fixes that didn't make 3.14.
 - Support for the EVA Extended Virtual Addressing
 - Switch Alchemy to the platform PATA driver
 - Complete unification of Alchemy support
 - Allow availability of I/O cache coherency to be runtime detected
 - Improvments to multiprocessing support for Imgtec platforms
 - A few microoptimizations
 - Cleanups of FPU support
 - Paul Gortmaker's fixes for the init stuff
 - Support for seccomp

* 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr: (165 commits)
  MIPS: CPC: Use __raw_ memory access functions
  MIPS: CM: use __raw_ memory access functions
  MIPS: Fix warning when including smp-ops.h with CONFIG_SMP=n
  MIPS: Malta: GIC IPIs may be used without MT
  MIPS: smp-mt: Use common GIC IPI implementation
  MIPS: smp-cmp: Remove incorrect core number probe
  MIPS: Fix gigaton of warning building with microMIPS.
  MIPS: Fix core number detection for MT cores
  MIPS: MT: core_nvpes function to retrieve VPE count
  MIPS: Provide empty mips_mt_set_cpuoptions when CONFIG_MIPS_MT=n
  MIPS: Lasat: Replace del_timer by del_timer_sync
  MIPS: Malta: Setup PM I/O region on boot
  MIPS: Loongson: Add a Loongson-3 default config file
  MIPS: Loongson 3: Add CPU hotplug support
  MIPS: Loongson 3: Add Loongson-3 SMP support
  MIPS: Loongson: Add Loongson-3 Kconfig options
  MIPS: Loongson: Add swiotlb to support All-Memory DMA
  MIPS: Loongson 3: Add serial port support
  MIPS: Loongson 3: Add IRQ init and dispatch support
  MIPS: Loongson 3: Add HT-linked PCI support
  ...

1 files changed, 17 insertions, 5 deletions

diff --git a/arch/mips/include/asm/switch_to.h b/arch/mips/include/asm/switch_to.h
index 278d45a09728..495c1041a2cc 100644
--- a/arch/mips/include/asm/switch_to.h
+++ b/arch/mips/include/asm/switch_to.h
@@ -16,22 +16,29 @@
 #include <asm/watch.h>
 #include <asm/dsp.h>
 #include <asm/cop2.h>
+#include <asm/msa.h>
 
 struct task_struct;
 
+enum {
+        FP_SAVE_NONE    = 0,
+        FP_SAVE_VECTOR  = -1,
+        FP_SAVE_SCALAR  = 1,
+};
+
 /**
  * resume - resume execution of a task
  * @prev:       The task previously executed.
  * @next:       The task to begin executing.
  * @next_ti:    task_thread_info(next).
- * @usedfpu:    Non-zero if prev's FP context should be saved.
+ * @fp_save:    Which, if any, FP context to save for prev.
  *
  * This function is used whilst scheduling to save the context of prev & load
  * the context of next. Returns prev.
  */
 extern asmlinkage struct task_struct *resume(struct task_struct *prev,
                 struct task_struct *next, struct thread_info *next_ti,
-                u32 usedfpu);
+                s32 fp_save);
 
 extern unsigned int ll_bit;
 extern struct task_struct *ll_task;
@@ -75,7 +82,8 @@ do {									\
 
 #define switch_to(prev, next, last)                                     \
 do {                                                                    \
-        u32 __usedfpu, __c0_stat;                                       \
+        u32 __c0_stat;                                                  \
+        s32 __fpsave = FP_SAVE_NONE;                                    \
         __mips_mt_fpaff_switch_to(prev);                                \
         if (cpu_has_dsp)                                                \
                 __save_dsp(prev);                                       \
@@ -88,8 +96,12 @@ do {									\
                 write_c0_status(__c0_stat & ~ST0_CU2);                  \
         }                                                               \
         __clear_software_ll_bit();                                      \
-        __usedfpu = test_and_clear_tsk_thread_flag(prev, TIF_USEDFPU);  \
-        (last) = resume(prev, next, task_thread_info(next), __usedfpu); \
+        if (test_and_clear_tsk_thread_flag(prev, TIF_USEDFPU))          \
+                __fpsave = FP_SAVE_SCALAR;                              \
+        if (test_and_clear_tsk_thread_flag(prev, TIF_USEDMSA))          \
+                __fpsave = FP_SAVE_VECTOR;                              \
+        (last) = resume(prev, next, task_thread_info(next), __fpsave);  \
+        disable_msa();                                                  \
 } while (0)
 
 #define finish_arch_switch(prev)                                        \