From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (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 951B56D1BA for ; Wed, 31 Jan 2024 11:32:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706700729; cv=none; b=qnl/+1NsdPKkQMkO1RXlLUnljx0eyuXVPOe/uBDaHXzCuJe3fkpUJGS/Jis1c6/wciVNoTJFeZ6rTxgz+u42YYtwaUo72WdoeV16bgld1a89xAGRGMK1jM0FGsx5tcwRfA6XalbmVHO+8ymwJrlMqea50DuG62kaiCK/+TqRLYU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706700729; c=relaxed/simple; bh=BMkblpyoANB3IfYB1c0zr/z+RR3pHfH694CCivKN7dg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=sNWUbGZd7hz6/T/TITOX5Wm+5W2/wtoZ3hXQ8nAfmoN2pWNq/D/0AnIMTTOu1VjiFiaFNISIv+LDdnbHUdpVklvZp54sftglMQRB+IPZUWa9KlR/OF3NYCo65ggzNOjU3CaiOQgddgf22OVcLG5L28hbOKjpiQGGkIASVSZxHp0= 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=aGo0UW7A; arc=none smtp.client-ip=192.198.163.12 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="aGo0UW7A" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706700727; x=1738236727; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=BMkblpyoANB3IfYB1c0zr/z+RR3pHfH694CCivKN7dg=; b=aGo0UW7Ad6XOguA/YlPIK5+9ZarWH7pXUdxiywHv/XiUZNT6PSLj8B3F +GrMf/retWTyUMCANBWqGJ8fFvVF4HTQ9Cosss9c2T9Bu34Sx1ahNyiUL UtN5VRw45h9IkKSzjlmg9aLMR5LatU2wh+D/zYdKctfCy9DtyivJk/1s8 G9i8hJ89/DHIJL5DcesDnTyVefCwnL+fT4ZLHR+dsYbArhHO/aVhwCv+X ScVg/9/lXx/VHLQsvRjgx+KC57tE5J7pQQDy5O5hLZNLUn7nfwob7X+gc Ht9iY2syCNCjMjHph6Woci8OQdSuEADeSo0ZWY6mvfU8onPW1rP8vLNPi w==; X-IronPort-AV: E=McAfee;i="6600,9927,10969"; a="3414122" X-IronPort-AV: E=Sophos;i="6.05,231,1701158400"; d="scan'208";a="3414122" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jan 2024 03:32:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10969"; a="878764784" X-IronPort-AV: E=Sophos;i="6.05,231,1701158400"; d="scan'208";a="878764784" Received: from server.sh.intel.com ([10.239.53.117]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jan 2024 03:32:03 -0800 From: "Huang, Kai" To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, dave.hansen@intel.com, kirill.shutemov@linux.intel.com, tglx@linutronix.de, bp@alien8.de, mingo@redhat.com, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, thomas.lendacky@amd.com, chao.gao@intel.com, bhe@redhat.com, nik.borisov@suse.com, pbonzini@redhat.com Subject: [PATCH 0/4] TDX host: kexec() support Date: Wed, 31 Jan 2024 11:31:52 +0000 Message-Id: X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Currently kexec() support and TDX host are muturally exclusive in the Kconfig. This series adds the TDX host kexec support so that they can work together and can be enabled at the same time in the Kconfig. This follows Dave's suggestion to add the CC_ATTR_HOST_MEM_INCOHERENT attribute to unify both Intel and AMD, instead of having Intel/AMD specific checks around [1]. Hi Tom, I've tested on my TDX testig machine but I don't have AMD machine to test. I highly appreciate if you or any AMD guy can help to review and/or test this series to make sure I didn't break anything. Thanks a lot! [1] https://lore.kernel.org/lkml/cbc9c527-17e5-4a63-80fe-85451394cc7c@amd.com/ Kai Huang (4): x86/coco: Add a new CC attribute to unify cache flush during kexec x86/virt/tdx: Advertise the CC_ATTR_HOST_MEM_INCOHERENT for TDX host x86/kexec(): Reset TDX private memory on platforms with TDX erratum x86/virt/tdx: Remove the !KEXEC_CORE dependency arch/x86/Kconfig | 2 +- arch/x86/coco/core.c | 34 +++++++++- arch/x86/include/asm/tdx.h | 2 + arch/x86/kernel/machine_kexec_64.c | 18 ++++- arch/x86/kernel/process.c | 14 +--- arch/x86/mm/mem_encrypt_identity.c | 11 +++- arch/x86/virt/vmx/tdx/tdx.c | 101 +++++++++++++++++++++++++++++ include/linux/cc_platform.h | 16 +++++ 8 files changed, 183 insertions(+), 15 deletions(-) base-commit: a6f0b57202b0ee50dc042bae16494008dc6dc992 -- 2.34.1