forked from Qortal/Brooklyn
33 lines
950 B
C
33 lines
950 B
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Interface for managing mitigations for Spectre vulnerabilities.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2020 Google LLC
|
||
|
|
* Author: Will Deacon <will@kernel.org>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ASM_SPECTRE_H
|
||
|
|
#define __ASM_SPECTRE_H
|
||
|
|
|
||
|
|
#include <asm/cpufeature.h>
|
||
|
|
|
||
|
|
/* Watch out, ordering is important here. */
|
||
|
|
enum mitigation_state {
|
||
|
|
SPECTRE_UNAFFECTED,
|
||
|
|
SPECTRE_MITIGATED,
|
||
|
|
SPECTRE_VULNERABLE,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct task_struct;
|
||
|
|
|
||
|
|
enum mitigation_state arm64_get_spectre_v2_state(void);
|
||
|
|
bool has_spectre_v2(const struct arm64_cpu_capabilities *cap, int scope);
|
||
|
|
void spectre_v2_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
||
|
|
|
||
|
|
enum mitigation_state arm64_get_spectre_v4_state(void);
|
||
|
|
bool has_spectre_v4(const struct arm64_cpu_capabilities *cap, int scope);
|
||
|
|
void spectre_v4_enable_mitigation(const struct arm64_cpu_capabilities *__unused);
|
||
|
|
void spectre_v4_enable_task_mitigation(struct task_struct *tsk);
|
||
|
|
|
||
|
|
#endif /* __ASM_SPECTRE_H */
|