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x86: ignore stepping for APL30 errata

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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
This commit is contained in:
Corvin Köhne 2023-01-12 09:59:28 +01:00
parent 24f42edcdd
commit 122405c903
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1 changed files with 1 additions and 1 deletions
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2
sys/x86/x86/cpu_machdep.c
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@ -823,7 +823,7 @@ cpu_idle_tun(void *unused __unused)
}
if (cpu_vendor_id == CPU_VENDOR_INTEL &&
(cpu_id == 0x506c9 || cpu_id == 0x506ca)) {
CPUID_TO_FAMILY(cpu_id) == 0x6 && CPUID_TO_MODEL(cpu_id) == 0x5c) {
/*
* Apollo Lake errata APL31 (public errata APL30).
* Stores to the armed address range may not trigger