diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-02-11 16:45:54 +0000 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-03-05 10:41:22 +0000 |
| commit | 9dd78194a3722fa6712192cdd4f7032d45112a9a (patch) | |
| tree | 5ee76e8cebc54c104407856e61f83d47c9bf52ee /arch/arm/include | |
| parent | df0cc57e057f18e44dac8e6c18aba47ab53202f9 (diff) | |
ARM: report Spectre v2 status through sysfs
As per other architectures, add support for reporting the Spectre
vulnerability status via sysfs CPU.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/spectre.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/include/asm/spectre.h b/arch/arm/include/asm/spectre.h new file mode 100644 index 000000000000..8a9019e08dba --- /dev/null +++ b/arch/arm/include/asm/spectre.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ASM_SPECTRE_H +#define __ASM_SPECTRE_H + +enum { + SPECTRE_UNAFFECTED, + SPECTRE_MITIGATED, + SPECTRE_VULNERABLE, +}; + +enum { + __SPECTRE_V2_METHOD_BPIALL, + __SPECTRE_V2_METHOD_ICIALLU, + __SPECTRE_V2_METHOD_SMC, + __SPECTRE_V2_METHOD_HVC, +}; + +enum { + SPECTRE_V2_METHOD_BPIALL = BIT(__SPECTRE_V2_METHOD_BPIALL), + SPECTRE_V2_METHOD_ICIALLU = BIT(__SPECTRE_V2_METHOD_ICIALLU), + SPECTRE_V2_METHOD_SMC = BIT(__SPECTRE_V2_METHOD_SMC), + SPECTRE_V2_METHOD_HVC = BIT(__SPECTRE_V2_METHOD_HVC), +}; + +void spectre_v2_update_state(unsigned int state, unsigned int methods); + +#endif |