1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #ifndef __ASM_SPECTRE_H
4 #define __ASM_SPECTRE_H
5 
6 enum {
7 	SPECTRE_UNAFFECTED,
8 	SPECTRE_MITIGATED,
9 	SPECTRE_VULNERABLE,
10 };
11 
12 enum {
13 	__SPECTRE_V2_METHOD_BPIALL,
14 	__SPECTRE_V2_METHOD_ICIALLU,
15 	__SPECTRE_V2_METHOD_SMC,
16 	__SPECTRE_V2_METHOD_HVC,
17 	__SPECTRE_V2_METHOD_LOOP8,
18 };
19 
20 enum {
21 	SPECTRE_V2_METHOD_BPIALL = BIT(__SPECTRE_V2_METHOD_BPIALL),
22 	SPECTRE_V2_METHOD_ICIALLU = BIT(__SPECTRE_V2_METHOD_ICIALLU),
23 	SPECTRE_V2_METHOD_SMC = BIT(__SPECTRE_V2_METHOD_SMC),
24 	SPECTRE_V2_METHOD_HVC = BIT(__SPECTRE_V2_METHOD_HVC),
25 	SPECTRE_V2_METHOD_LOOP8 = BIT(__SPECTRE_V2_METHOD_LOOP8),
26 };
27 
28 #ifdef CONFIG_GENERIC_CPU_VULNERABILITIES
29 void spectre_v2_update_state(unsigned int state, unsigned int methods);
30 #else
spectre_v2_update_state(unsigned int state,unsigned int methods)31 static inline void spectre_v2_update_state(unsigned int state,
32 					   unsigned int methods)
33 {}
34 #endif
35 
36 int spectre_bhb_update_vectors(unsigned int method);
37 
38 #endif
39