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X-CSE-ConnectionGUID: qLhuMorKS8C+Fq5xlBK3Dg== X-CSE-MsgGUID: R82Rm5m5SgihAuQ2YVOjJw== X-IronPort-AV: E=McAfee;i="6700,10204,11371"; a="54245544" X-IronPort-AV: E=Sophos;i="6.14,242,1736841600"; d="scan'208";a="54245544" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2025 07:57:33 -0700 X-CSE-ConnectionGUID: 0FaqkDUdRamXwQnAfGkEnQ== X-CSE-MsgGUID: 9W+b80xeTXeF7xd3gzAitw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,242,1736841600"; d="scan'208";a="124812634" Received: from ldmartin-desk2.corp.intel.com (HELO [10.125.108.3]) ([10.125.108.3]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2025 07:57:32 -0700 Message-ID: Date: Wed, 12 Mar 2025 07:57:31 -0700 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] x86/sev: Make SEV_STATUS available via SYSFS To: Joerg Roedel , x86@kernel.org Cc: hpa@zytor.com, Tom Lendacky , Nikunj A Dadhania , Larry.Dewey@amd.com, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, Juergen Gross , kirill.shutemov@linux.intel.com, alexey.gladkov@intel.com, Joerg Roedel References: <20250312144107.108451-1-joro@8bytes.org> <20250312144107.108451-3-joro@8bytes.org> Content-Language: en-US From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/12/25 07:41, Joerg Roedel wrote: > +static ssize_t sev_status_show(struct kobject *kobj, > + struct kobj_attribute *attr, char *buf) > +{ > + return sysfs_emit(buf, "%llx\n", sev_status); > +} Do we really want to just plumb the raw MSR out to userspace? Users would still need to parse the thing, so it's not _really_ human readable.