| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __X86_KERNEL_FPU_INTERNAL_H |
| 3 | #define __X86_KERNEL_FPU_INTERNAL_H |
| 4 | |
| 5 | extern struct fpstate init_fpstate; |
| 6 | |
| 7 | /* CPU feature check wrappers */ |
| 8 | static __always_inline __pure bool use_xsave(void) |
| 9 | { |
| 10 | return cpu_feature_enabled(X86_FEATURE_XSAVE); |
| 11 | } |
| 12 | |
| 13 | static __always_inline __pure bool use_fxsr(void) |
| 14 | { |
| 15 | return cpu_feature_enabled(X86_FEATURE_FXSR); |
| 16 | } |
| 17 | |
| 18 | #ifdef CONFIG_X86_DEBUG_FPU |
| 19 | # define WARN_ON_FPU(x) WARN_ON_ONCE(x) |
| 20 | #else |
| 21 | # define WARN_ON_FPU(x) ({ BUILD_BUG_ON_INVALID(x); 0; }) |
| 22 | #endif |
| 23 | |
| 24 | /* Used in init.c */ |
| 25 | extern void fpstate_init_user(struct fpstate *fpstate); |
| 26 | extern void fpstate_reset(struct fpu *fpu); |
| 27 | |
| 28 | #endif |
| 29 |