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a="2147384" X-IronPort-AV: E=Sophos;i="6.27,186,1787036400"; d="scan'208";a="2147384" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2026 09:13:14 -0700 X-CSE-ConnectionGUID: NTp0fqX4TsquFoCBR6I98Q== X-CSE-MsgGUID: n7ulosMeRbyq5LgqgqGgTw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,186,1787036400"; d="scan'208";a="5875989" Received: from iherna2-mobl4.amr.corp.intel.com (HELO [10.125.109.71]) ([10.125.109.71]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2026 09:13:13 -0700 Message-ID: <939b4cc7-5c7f-429d-a9be-830aa1c53ac5@intel.com> Date: Fri, 30 Oct 2026 09:13:12 -0700 X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] x86/virt/tdx: Skip TDH.SYS.DISABLE if the TDX module is not initialized To: Challvy Tee , x86@kernel.org, linux-coco@lists.linux.dev Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org, kas@kernel.org, dave.hansen@linux.intel.com, rick.p.edgecombe@intel.com, vishal.l.verma@intel.com, kai.huang@intel.com, seanjc@google.com References: <20261030154851.907726-1-challvy.tee@gmail.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/30/26 08:48, Challvy Tee wrote: > --- a/arch/x86/virt/vmx/tdx/tdx.c > +++ b/arch/x86/virt/vmx/tdx/tdx.c > @@ -2321,6 +2321,9 @@ void tdx_sys_disable(void) > struct tdx_module_args args = {}; > u64 ret; > > + if (!tdx_module_state.initialized) > + return; NAK from me on this. If SEAMCALL is fatal then we need stronger barriers on the generic paths to SEAMCALLs themselves, not one-off patches of the sites.