linux-kernel - Re: [PATCH] x86: Unbreak early processor microcode loading

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Date:	Wed, 4 Mar 2015 12:45:26 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Daniel J Blueman <daniel@...ascale.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>,
	Steffen Persvold <sp@...ascale.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH] x86: Unbreak early processor microcode loading

On Wed, Mar 04, 2015 at 10:18:47AM +0100, Borislav Petkov wrote:
> Let me try to reproduce that here.

Well, it works fine on a single-socket box here:

[    1.045426] microcode: updated early to new patch_level=0x010000dc
[    1.060957] microcode: CPU0: patch_level=0x010000dc
[    1.061143] microcode: CPU1: patch_level=0x010000dc
[    1.061310] microcode: CPU2: patch_level=0x010000dc
[    1.061495] microcode: CPU3: patch_level=0x010000dc
[    1.061677] microcode: CPU4: patch_level=0x010000dc
[    1.061863] microcode: CPU5: patch_level=0x010000dc

That's early patching.

$ grep -E "(FIRMWARE|MICROCODE)" .config
CONFIG_MICROCODE=y
CONFIG_MICROCODE_INTEL=y
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_MICROCODE_INTEL_EARLY=y
CONFIG_MICROCODE_AMD_EARLY=y
CONFIG_MICROCODE_EARLY=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE="microcode_amd.bin microcode_amd_fam15h.bin microcode_amd_fam16h.bin"
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware/amd-ucode"
# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set
CONFIG_FIRMWARE_EDID=y
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_GOOGLE_FIRMWARE is not set
# CONFIG_TEST_FIRMWARE is not set

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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