diff options
Diffstat (limited to 'arch/x86/kernel/fpu/core.c')
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 4809c32149e8..494ab4c57268 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -191,24 +191,30 @@ void fpu__save(struct fpu *fpu) } EXPORT_SYMBOL_GPL(fpu__save); +/* + * Legacy x87 fpstate state init: + */ +static inline void fpstate_init_fstate(struct i387_fsave_struct *fp) +{ + fp->cwd = 0xffff037fu; + fp->swd = 0xffff0000u; + fp->twd = 0xffffffffu; + fp->fos = 0xffff0000u; +} + void fpstate_init(struct fpu *fpu) { if (!cpu_has_fpu) { - finit_soft_fpu(&fpu->state.soft); + fpstate_init_soft(&fpu->state.soft); return; } memset(&fpu->state, 0, xstate_size); - if (cpu_has_fxsr) { - fx_finit(&fpu->state.fxsave); - } else { - struct i387_fsave_struct *fp = &fpu->state.fsave; - fp->cwd = 0xffff037fu; - fp->swd = 0xffff0000u; - fp->twd = 0xffffffffu; - fp->fos = 0xffff0000u; - } + if (cpu_has_fxsr) + fpstate_init_fxstate(&fpu->state.fxsave); + else + fpstate_init_fstate(&fpu->state.fsave); } EXPORT_SYMBOL_GPL(fpstate_init); |