3.16.55-rc1 review patch. If anyone has any objections, please let me know.
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From: Ralf Baechle ralf@linux-mips.org
commit 9cc719ab3f4f639d629ac8ff09e9b998bc006f68 upstream.
Due to the slightly odd way that new threads and processes start execution when scheduled for the very first time they were bypassing the required disable_msa call.
Signed-off-by: Ralf Baechle ralf@linux-mips.org Signed-off-by: Ben Hutchings ben@decadent.org.uk --- arch/mips/include/asm/switch_to.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/include/asm/switch_to.h +++ b/arch/mips/include/asm/switch_to.h @@ -101,7 +101,6 @@ do { \ 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) \ @@ -119,6 +118,7 @@ do { \ if (cpu_has_userlocal) \ write_c0_userlocal(current_thread_info()->tp_value); \ __restore_watch(); \ + disable_msa(); \ } while (0)
#endif /* _ASM_SWITCH_TO_H */