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b9baf5c8c5
Workaround the Spectre BHB issues for Cortex-A15, Cortex-A57, Cortex-A72, Cortex-A73 and Cortex-A75. We also include Brahma B15 as well to be safe, which is affected by Spectre V2 in the same ways as Cortex-A15. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
32 lines
755 B
C
32 lines
755 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __ASM_SPECTRE_H
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#define __ASM_SPECTRE_H
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enum {
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SPECTRE_UNAFFECTED,
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SPECTRE_MITIGATED,
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SPECTRE_VULNERABLE,
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};
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enum {
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__SPECTRE_V2_METHOD_BPIALL,
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__SPECTRE_V2_METHOD_ICIALLU,
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__SPECTRE_V2_METHOD_SMC,
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__SPECTRE_V2_METHOD_HVC,
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__SPECTRE_V2_METHOD_LOOP8,
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};
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enum {
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SPECTRE_V2_METHOD_BPIALL = BIT(__SPECTRE_V2_METHOD_BPIALL),
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SPECTRE_V2_METHOD_ICIALLU = BIT(__SPECTRE_V2_METHOD_ICIALLU),
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SPECTRE_V2_METHOD_SMC = BIT(__SPECTRE_V2_METHOD_SMC),
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SPECTRE_V2_METHOD_HVC = BIT(__SPECTRE_V2_METHOD_HVC),
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SPECTRE_V2_METHOD_LOOP8 = BIT(__SPECTRE_V2_METHOD_LOOP8),
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};
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void spectre_v2_update_state(unsigned int state, unsigned int methods);
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int spectre_bhb_update_vectors(unsigned int method);
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#endif
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