From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B1F143BDCD; Thu, 6 Aug 2026 11:24:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786015468; cv=none; b=DZgnlTHS3Cjvb94xUq8KX2WMIDinLW0j3O9ALSL6GDk3i0MG69NXF1mMK8L6umkuttINcfaYbZ8Oh/5yZTrFLk/H1kJ0k12rJgft+FqcOzoFI7a+RcYietnC2bPJE81K4Mx7CYN/GZxlAjUA16LvHtmvnAHSRp393EYmNBqmPM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786015468; c=relaxed/simple; bh=/aX44MsGPFBYQ9hf0Exvq4l0dEXgLJroJsi7T69Jg/Q=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZEgNUSg7EXIJiP+47JsEB+A/HLMmr5TsxGUjA6Wf77XE1NPuzkEuYCDjjVuKZcIYhu3Py4xxjKxaWDuGy35KSY+Qa4Ij3+tz62Iv+dtFbPgz9iletXYv3OTHK2LaV0MsG7JFchzAY8LD11lYWEbO/kRqq3GudXPHA+VeF6+EBEc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Lfc15nIz; arc=none smtp.client-ip=198.175.65.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Lfc15nIz" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786015466; x=1817551466; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=/aX44MsGPFBYQ9hf0Exvq4l0dEXgLJroJsi7T69Jg/Q=; b=Lfc15nIzuOlTKmXFDDwfjPc1Kimlzn58M4fVCN8QqjINgYwByIxRJWBL jpaiv+hr6s84NxC3YoW+qBraC3uJzwq1Rdh0t0Gf690/ErD2zloQWGWB3 pATisKwr8IuhFfgj0qtPSsTfNJ9sQ7GZ+9gZ3/DkXl3TwIpZJNbuuiXI0 kN2GGwl3pFV45vC9Rck//xBVeUUbJJHOzntP36rjg2WQ85iZIF/QXq5jh CsBpC+/Sxpasq/crisULhm3uN2aW2+bU4Il0LJ+e3hEjTDvc8zbrWy8B0 /S66dB7DQ8KSDnvlmmzhVsZDn21ckyqsQM3x4DJJ/zKGwYEN5DhJe8ryq w==; X-CSE-ConnectionGUID: CFMLdGkMTueYWrfz55Dn9Q== X-CSE-MsgGUID: lTY8PTAOREmPmCFs/w9JLQ== X-IronPort-AV: E=McAfee;i="6800,10657,11866"; a="86617190" X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="86617190" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2026 04:24:25 -0700 X-CSE-ConnectionGUID: 7+eQnIoySmyGCVXEtKxX2w== X-CSE-MsgGUID: R2Oa10yMR/qB69Qfz7z6AQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="267225052" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.33]) by fmviesa005.fm.intel.com with ESMTP; 06 Aug 2026 04:24:24 -0700 From: Xiaoyao Li To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, xiaoyao.li@intel.com Subject: [PATCH 0/3] KVM: x86: BUS_LOCK_EXIT fixes Date: Thu, 6 Aug 2026 19:19:20 +0800 Message-ID: <20260806111923.1990562-1-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series contains fixes for x86 Bus Lock Exit feature. Patch 1 fixes a bug which is somewhat discovered by Sashiko, when it reviewed the TDX Bus Lock Exit enabling patch [1]. It pointed out one issue for the TDX patch, and I found the existing VMX code has the same issue. Patch 2 and patch 3 fix the issues for KVM_CAP_X86_BUS_LOCK_EXIT, which were found When I tested the TDX Bus Lock Exit enabling patch. [1] https://lore.kernel.org/all/20260805034602.5B2BB1F000E9@smtp.kernel.org/ Xiaoyao Li (3): KVM: VMX: Preserve negative return value in vmx_handle_exit() with bus lock detected KVM: x86: Reject enabling KVM_CAP_X86_BUS_LOCK_EXIT when !kvm_caps.has_bus_lock_exit KVM: x86: Only allow enabling KVM_BUS_LOCK_DETECTION_EXIT before creating any vCPU arch/x86/kvm/vmx/vmx.c | 5 +++-- arch/x86/kvm/x86.c | 14 +++++++++++--- 2 files changed, 14 insertions(+), 5 deletions(-) base-commit: a806d364ef288a6443a1337820ea8410a7ccc6b3 -- 2.43.0