Xen project Mailing List

[PATCH v2 0/2] Add Kconfig option to remove microcode loading support

From: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>

Date: Mon, 12 Jan 2026 16:02:54 +0100

Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.xenproject.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0)

Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=/pLOSTgowp564qhw/IuxOEayZcT2eLsgWW+FjWEzN18=; b=nEp5YKjHEJkASbNs4QH2OAaOCFpPPCfcaYZ4elVcqjZQf9ZHCLfMsclIqAq2ZGQGJgms9BmAQZ8Io48th5yFaroi9DmOQHBVr/IXiP9pNThnunVPRFQZxVyPsqv2sFfQ7ldfWBpjNYPZKNftNgBTBrwa/URb49OkNvHVtiMkyov38weaV2+XwFCFKnMDmS2IsPtYPdgLFWlyvNRnSATg3KJY3Op+7u5qhkG8Q0SAI4M/2+MmM9Ht6k502kOyYqUvBEsy+0O7/QwHNR84uz2KbKtJe4jLFwfRvIInbXiWCq5mSQNmsx97zf0rA60k20ircY/QRQ6PKnl/XCbJMh5TFg==

Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=sR7o0qQ7viZhiNwNAQlNrtdE96pTeBrKOqUktVOp8Nj6u7xc8syKYMZP/TB//J2E0iN4CMsPgmbDsvv/AdKYlVPh7gxp3eOyMO8AQpRBrqGtHrZGVZd7ESjvSQPgViMAOr3mUYblc+erWdDJgBdg0t2VHWVWX3QCF6sn7imOqtxMWHa/4lB3tpJwilbWHvELy5XPjHIrV3djJHxIrZMJSSzPhOK3cSN5B9FETKhpBZpcLngTqcQeLBlxA42Ak8/8672/xoUuXSUFfpJAQRuTKKB0ugDGj9dMfD6e4pw/o9edesFPwSJlhlka7iSGcHfPf7GupNxwQ7WEQETunLZAdg==

Cc: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "Anthony PERARD" <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>

Delivery-date: Mon, 12 Jan 2026 15:03:23 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi, This is v2 of the series I sent back in November, now condensed in a single patch with heavier use of DCE, and with earlycpio removed too. While doing this I spotted a typo, thus the new patch1. Patch 2 has all the meat, fat and bone of the old series at a fraction of the diffstat. v1: https://lore.kernel.org/xen-devel/20251112162219.226075-1-alejandro.garciavallejo@xxxxxxx/ pipeline (still running at time of send): https://gitlab.com/xen-project/people/agvallejo/xen/-/pipelines/2258163170 Cheers, Alejandro Alejandro Vallejo (2): x86/ucode: Fix typo s/mitigiated/mitigated/ x86/ucode: Add Kconfig option to remove microcode loading automation/gitlab-ci/build.yaml | 2 +- docs/misc/efi.pandoc | 2 ++ docs/misc/xen-command-line.pandoc | 4 ++-- xen/arch/x86/Kconfig | 14 +++++++++++++- xen/arch/x86/cpu/microcode/amd.c | 28 ++++++++++++++++------------ xen/arch/x86/cpu/microcode/core.c | 25 ++++++++++++++++++------- xen/arch/x86/cpu/microcode/intel.c | 16 +++++++++------- xen/arch/x86/efi/efi-boot.h | 3 ++- xen/arch/x86/platform_hypercall.c | 2 ++ xen/common/Makefile | 3 ++- 10 files changed, 67 insertions(+), 32 deletions(-) base-commit: a2a34d76643e49ccc949296c9a45888034e50b55 -- 2.43.0

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.