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X-CSE-ConnectionGUID: Z3WtXK26SUS6G7AYFS1fJw== X-CSE-MsgGUID: qHRmcjtmQ5WztP3hollgMg== X-IronPort-AV: E=McAfee;i="6800,10657,11913"; a="90603567" X-IronPort-AV: E=Sophos;i="6.27,117,1787036400"; d="scan'208";a="90603567" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2026 11:24:55 -0700 X-CSE-ConnectionGUID: QonAaH4PR/2EdM8fSde0GQ== X-CSE-MsgGUID: T1UC0Ph9RLySShBkyqBvBQ== X-ExtLoop1: 1 Received: from sghuge-mobl2.amr.corp.intel.com (HELO [10.125.110.31]) ([10.125.110.31]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2026 11:24:55 -0700 Message-ID: Date: Tue, 22 Sep 2026 11:24:55 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] x86/early_printk: Add earlyprintk=tdx to drive the UART with TDVMCALLs To: "Verma, Vishal L" , "rdunlap@infradead.org" , "corbet@lwn.net" , "x86@kernel.org" , "kas@kernel.org" , "dave.hansen@linux.intel.com" , "Edgecombe, Rick P" , "skhan@linuxfoundation.org" Cc: "kvm@vger.kernel.org" , "linux-coco@lists.linux.dev" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <20260921-b4-tdx_earlyprintk_tdcalls-v2-0-ad1fde3f25fd@intel.com> <20260921-b4-tdx_earlyprintk_tdcalls-v2-2-ad1fde3f25fd@intel.com> <12013d91-b945-40b9-a6e0-a025460eab72@intel.com> <58df7c2c57f2e00b0322216ec56196781023ce62.camel@intel.com> <94ea99fc4ba332a07530ced72284c2193aaedecd.camel@intel.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 9/22/26 11:18, Verma, Vishal L wrote: > As a thought exercise, I changed this to just use ttyS0 which is the > defined default, and that changes the setup hunks to look like below > (not thoroughly tested or anything yet). Would you prefer this instead? That looks fine to me.