hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MIPS: MSA: bugfix - disable MSA correctly for new threads/processes. 

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>
This commit is contained in:
Ralf Baechle 2015-05-23 01:20:19 +02:00
parent d9fb566045
commit 9cc719ab3f
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/include/asm/switch_to.h
View File

@ -104,7 +104,6 @@ do { \
if (test_and_clear_tsk_thread_flag(prev, TIF_USEDMSA)) \ if (test_and_clear_tsk_thread_flag(prev, TIF_USEDMSA)) \
__fpsave = FP_SAVE_VECTOR; \ __fpsave = FP_SAVE_VECTOR; \
(last) = resume(prev, next, task_thread_info(next), __fpsave); \ (last) = resume(prev, next, task_thread_info(next), __fpsave); \
disable_msa(); \
} while (0) } while (0)
#define finish_arch_switch(prev) \ #define finish_arch_switch(prev) \
@ -122,6 +121,7 @@ do { \
if (cpu_has_userlocal) \ if (cpu_has_userlocal) \
write_c0_userlocal(current_thread_info()->tp_value); \ write_c0_userlocal(current_thread_info()->tp_value); \
__restore_watch(); \ __restore_watch(); \
disable_msa(); \
} while (0) } while (0)
#endif /* _ASM_SWITCH_TO_H */ #endif /* _ASM_SWITCH_TO_H */