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| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2015-09-29 17:53:22 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 14:32:08 +0200 |
| commit | 0ac277790ec938087c9047bc7b1b4f30a65406cd (patch) | |
| tree | 40b6d35e57e82258dbf1c6cafe8469b8b16dc375 /arch/s390/include/asm | |
| parent | s390/fpu: always enable the vector facility if it is available (diff) | |
| download | linux-0ac277790ec938087c9047bc7b1b4f30a65406cd.tar.xz linux-0ac277790ec938087c9047bc7b1b4f30a65406cd.zip | |
s390/fpu: add static FPU save area for init_task
Previously, the init task did not have an allocated FPU save area and
saving an FPU state was not possible. Now if the vector extension is
always enabled, provide a static FPU save area to save FPU states of
vector instructions that can be executed quite early.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 085fb0d3c54e..5900877bb19c 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -139,8 +139,10 @@ struct stack_frame { #define ARCH_MIN_TASKALIGN 8 +extern __vector128 init_task_fpu_regs[__NUM_VXRS]; #define INIT_THREAD { \ .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ + .fpu.regs = (void *)&init_task_fpu_regs, \ } /* |