diff options
Diffstat (limited to 'arch/x86/kernel/i387.c')
| -rw-r--r-- | arch/x86/kernel/i387.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index 05fcc90087b0..5f2feb63b72a 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -246,17 +246,21 @@ void fpu_finit(struct fpu *fpu) } EXPORT_SYMBOL_GPL(fpu_finit); -int fpu_alloc(struct fpu *fpu) +int fpstate_alloc(struct fpu *fpu) { if (fpu->state) return 0; + fpu->state = kmem_cache_alloc(task_xstate_cachep, GFP_KERNEL); if (!fpu->state) return -ENOMEM; + + /* The CPU requires the FPU state to be aligned to 16 byte boundaries: */ WARN_ON((unsigned long)fpu->state & 15); + return 0; } -EXPORT_SYMBOL_GPL(fpu_alloc); +EXPORT_SYMBOL_GPL(fpstate_alloc); /* * Allocate the backing store for the current task's FPU registers @@ -276,7 +280,7 @@ int fpstate_alloc_init(struct task_struct *curr) /* * Memory allocation at the first usage of the FPU and other state. */ - ret = fpu_alloc(&curr->thread.fpu); + ret = fpstate_alloc(&curr->thread.fpu); if (ret) return ret; @@ -310,7 +314,7 @@ static int fpu__unlazy_stopped(struct task_struct *child) /* * Memory allocation at the first usage of the FPU and other state. */ - ret = fpu_alloc(&child->thread.fpu); + ret = fpstate_alloc(&child->thread.fpu); if (ret) return ret; |