arch/arm/include/asm/spectre.h

   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
  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