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arm64: alternatives: proton-pack: prepare for cap changes
The spectre patching callbacks use cpus_have_final_cap(), and subsequent patches will make it invalid to call cpus_have_final_cap() before alternatives patching has completed. In preparation for said change, this patch modifies the spectre patching callbacks use cpus_have_cap(). This is not subject to patching, and will dynamically check the cpu_hwcaps array, which is functionally equivalent to the existing behaviour. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Joey Gouly <joey.gouly@arm.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: James Morse <james.morse@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Will Deacon <will@kernel.org> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20220912162210.3626215-4-mark.rutland@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -586,7 +586,7 @@ void __init spectre_v4_patch_fw_mitigation_enable(struct alt_instr *alt,
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if (spectre_v4_mitigations_off())
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return;
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if (cpus_have_final_cap(ARM64_SSBS))
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if (cpus_have_cap(ARM64_SSBS))
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return;
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if (spectre_v4_mitigations_dynamic())
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