linux-kernel - RE: [PATCH v3] x86/microcode/intel: Extend BDW late-loading with LLC size check

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Date:   Fri, 19 Jan 2018 01:03:09 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Jia Zhang <zhang.jia@...ux.alibaba.com>,
        "bp@...en8.de" <bp@...en8.de>
CC:     "hmh@....eng.br" <hmh@....eng.br>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3] x86/microcode/intel: Extend BDW late-loading with
 LLC size check

	if (c->x86 == 6 &&
 	    c->x86_model == INTEL_FAM6_BROADWELL_X &&
 	    c->x86_mask == 0x01 &&
+	    llc_size_per_core > 2621440 &&
 	    c->microcode < 0x0b000021) {
 		pr_err_once("Erratum BDF90: late loading with revision < 0x0b000021 (0x%x) disabled.\n", c->microcode);
 		pr_err_once("Please consider either early loading through initrd/built-in or a potential BIOS update.\n");

This version looks good to me.

Acked-by: Tony Luck <tony.luck@...el.com>