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22 Jun 2022 07:29:51 -0700 X-IronPort-AV: E=Sophos;i="5.92,212,1650956400"; d="scan'208";a="677571663" Received: from bshakya-mobl.amr.corp.intel.com (HELO [10.212.188.76]) ([10.212.188.76]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jun 2022 07:29:49 -0700 Message-ID: <25be3068-be13-a451-86d4-ff4cc12ddb23@intel.com> Date: Wed, 22 Jun 2022 07:29:31 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Subject: Re: [PATCH Part2 v6 05/49] x86/sev: Add RMP entry lookup helpers Content-Language: en-US To: "Kalra, Ashish" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "linux-coco@lists.linux.dev" , "linux-mm@kvack.org" , "linux-crypto@vger.kernel.org" Cc: "tglx@linutronix.de" , "mingo@redhat.com" , "jroedel@suse.de" , "Lendacky, Thomas" , "hpa@zytor.com" , "ardb@kernel.org" , "pbonzini@redhat.com" , "seanjc@google.com" , "vkuznets@redhat.com" , "jmattson@google.com" , "luto@kernel.org" , "dave.hansen@linux.intel.com" , "slp@redhat.com" , "pgonda@google.com" , "peterz@infradead.org" , "srinivas.pandruvada@linux.intel.com" , "rientjes@google.com" , "dovmurik@linux.ibm.com" , "tobin@ibm.com" , "bp@alien8.de" , "Roth, Michael" , "vbabka@suse.cz" , "kirill@shutemov.name" , "ak@linux.intel.com" , "tony.luck@intel.com" , "marcorr@google.com" , "sathyanarayanan.kuppuswamy@linux.intel.com" , "alpergun@google.com" , "dgilbert@redhat.com" , "jarkko@kernel.org" References: <8f63961f00fd170ba0e561f499292175f3155d26.1655761627.git.ashish.kalra@amd.com> From: Dave Hansen In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1655908212; a=rsa-sha256; cv=none; b=irv1ygd9ZGWRXMEHVciBufpCC1AjvmTugGmitQi/q4KlFCr8nAz9Gspf6wZqPJiTa02Xzq JSUq5BiTwEuNE5dCX1hLzI7IwlqqfUlnfds//WPDhuhdqT6msTl3JGUe/8yWhSkjvlX9o4 ico5xE7emfX9ZiZnwq5pViFEp4s1sWg= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=GbiwIXTS; spf=temperror (imf17.hostedemail.com: error in processing during lookup of dave.hansen@intel.com: DNS error) smtp.mailfrom=dave.hansen@intel.com; dmarc=pass (policy=none) header.from=intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1655908212; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=+F4nwBBEni9ppgS1R/ULIpMtG/XoST/SDPwPq9KYEIM=; b=jwm+rFWbaaouhvyGaGZBjJjCxcWqSn+EpHtLTiVhNHjczK9RXmSc7WYnK659VspElGLWVF 1XHWxEib780vF/Zb9z97CYcjLtg60YTEK7jWXfkA4mum2cE1feZYIf1Y5sleDLsPZZrtFa ozJKZp6SmuDq6XsYrQft3AAx8wsiiRY= X-Stat-Signature: xk3tot5i1n685s7gm77rttasuq5xjo7d X-Rspamd-Server: rspam06 Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=GbiwIXTS; spf=temperror (imf17.hostedemail.com: error in processing during lookup of dave.hansen@intel.com: DNS error) smtp.mailfrom=dave.hansen@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspam-User: X-Rspamd-Queue-Id: 28B6C40026 X-HE-Tag: 1655908205-797250 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 6/22/22 07:22, Kalra, Ashish wrote: > As I replied previously on the same subject: Architectural implies > that it is defined in the APM and shouldn't change in such a way as > to not be backward compatible. I probably think the wording here > should be architecture independent or more precisely platform > independent. Yeah, arch-independent and non-architectural are quite different concepts. At Intel, at least, when someone says "not architectural" mean that the behavior is implementation-specific. That, combined with the model/family/stepping gave me the wrong impression about what was going on. Some more clarity would be greatly appreciated.