x86: ignore stepping for APL30 errata
The issue is present in all apollolake cpus and it doesn't look like there'll be a fix in the future. See https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/pentium-celeron-n-series-j-series-datasheet-spec-update.pdf MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D37621
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@ -823,7 +823,7 @@ cpu_idle_tun(void *unused __unused)
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}
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if (cpu_vendor_id == CPU_VENDOR_INTEL &&
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(cpu_id == 0x506c9 || cpu_id == 0x506ca)) {
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CPUID_TO_FAMILY(cpu_id) == 0x6 && CPUID_TO_MODEL(cpu_id) == 0x5c) {
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/*
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* Apollo Lake errata APL31 (public errata APL30).
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* Stores to the armed address range may not trigger
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