arm64: Allow CPUs unffected by ARM erratum 1418040
to come in late
Now that we allow CPUs affected by erratumzero-sugar-mainline-defconfig1418040
to come in late, this prevents their unaffected sibblings from coming in late (or coming back after a suspend or hotplug-off, which amounts to the same thing). To allow this, we need to add ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU, which amounts to set .type to ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE. Fixes:bf87bb0881
("arm64: Allow booting of late CPUs affected by erratum 1418040") Reported-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Tested-by: Matthias Kaehlcke <mka@chromium.org> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20200911181611.2073183-1-maz@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -910,8 +910,12 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
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.desc = "ARM erratum 1418040",
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.capability = ARM64_WORKAROUND_1418040,
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ERRATA_MIDR_RANGE_LIST(erratum_1418040_list),
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.type = (ARM64_CPUCAP_SCOPE_LOCAL_CPU |
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ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU),
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/*
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* We need to allow affected CPUs to come in late, but
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* also need the non-affected CPUs to be able to come
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* in at any point in time. Wonderful.
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*/
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.type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE,
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},
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#endif
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#ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT
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