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X-CSE-ConnectionGUID: UrAGQqszSJu+xbCDX4sO8w== X-CSE-MsgGUID: EAuFklCEQCyOj6HWURRIQQ== X-IronPort-AV: E=McAfee;i="6700,10204,11336"; a="27142013" X-IronPort-AV: E=Sophos;i="6.13,266,1732608000"; d="py'?scan'208";a="27142013" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2025 21:04:47 -0800 X-CSE-ConnectionGUID: LxYoqZsUR5OCZ0/Zswm0Uw== X-CSE-MsgGUID: +/DHO5CZTrq+YF9LFAvDRg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,266,1732608000"; d="py'?scan'208";a="116459291" Received: from dnelso2-mobl.amr.corp.intel.com (HELO [10.125.111.17]) ([10.125.111.17]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2025 21:04:46 -0800 Content-Type: multipart/mixed; boundary="------------YwNmflRNchYFqapFSwGJiixW" Message-ID: Date: Thu, 6 Feb 2025 21:04:49 -0800 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] [v4] x86/cpu: Help users notice when running old Intel microcode To: Alex Murray , Dave Hansen , linux-kernel@vger.kernel.org Cc: x86@kernel.org, tglx@linutronix.de, bp@alien8.de, andrew.cooper3@citrix.com References: <20250206214723.B5F4DB81@davehans-spike.ostc.intel.com> <87tt96ikzf.fsf@canonical.com> 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 2/6/25 17:47, Alex Murray wrote: >> Also note that the "intel-ucode-defs.h" file is simple, ugly and >> has lots of magic numbers. That's on purpose and should allow a >> single file to be shared across lots of stable kernel regardless of if >> they have the new "VFM" infrastructure or not. It was generated with >> a dumb script. >> > Should this script be included as part of this patch so that it is easy > for others to update intel-ucode-defs.h if needed in the future? I was planning on throwing it in the tree _somewhere_ at some point. Here's a copy for now in case anyone wants to take a look. I assume folks would rather it live in the kernel tree in scripts/ rather than somewhere else. The other thing I was toying with was trying to get Intel to run it as a part of the microcode release process. That way, we could just copy the file from the microcode repo and wouldn't have to run a script at all. I'll post it as part of a real patch at some point. --------------YwNmflRNchYFqapFSwGJiixW Content-Type: text/x-python; charset=UTF-8; name="ucode-versions.py" Content-Disposition: attachment; filename="ucode-versions.py" Content-Transfer-Encoding: base64 IyEvdXNyL2Jpbi9weXRob24zCmltcG9ydCByZQppbXBvcnQgc3lzCmltcG9ydCBzdWJwcm9j ZXNzCgpkZWYgYml0cyh2YWwsIGJvdHRvbSwgdG9wKToKICAgICAgICBtYXNrID0gKDEgPDwg KHRvcCArIDEgLSBib3R0b20pKSAtIDEKICAgICAgICBtYXNrID0gbWFzayA8PCBib3R0b20K ICAgICAgICByZXR1cm4gKHZhbCAmIG1hc2spID4+IGJvdHRvbQoKZGVmIGZhbWlseShzaWcp OgoJaWYgYml0cyhzaWcsIDgsIDExKSA9PSAweGY6CgkJcmV0dXJuIGJpdHMoc2lnLCA4LCAx MSkgKyBiaXRzKHNpZywgMjAsIDI3KQoJcmV0dXJuIGJpdHMoc2lnLCA4LCAxMSkKZGVmIG1v ZGVsKHNpZyk6CiAgICAgICAgcmV0dXJuIGJpdHMoc2lnLCA0LCA3KSAgfCAoYml0cyhzaWcs IDE2LCAxOSk8PDQpCmRlZiBzdGVwKHNpZyk6CiAgICAgICAgcmV0dXJuIGJpdHMoc2lnLCAw LCAzKQoKY21kID0gWydpdWNvZGUtdG9vbCcsICctLWxpc3QtYWxsJyBdCgpmb3IgYXJnIGlu IHN5cy5hcmd2WzE6XToKICAgIGNtZCA9IGNtZCArIFsgYXJnIF0KCnNpZ2xpc3QgPSBbXQoK cHJvY2VzcyA9IHN1YnByb2Nlc3MuUG9wZW4oY21kLCBzdGRvdXQ9c3VicHJvY2Vzcy5QSVBF LCB1bml2ZXJzYWxfbmV3bGluZXM9VHJ1ZSkKZm9yIGxpbmUgaW4gcHJvY2Vzcy5zdGRvdXQ6 CiAgICAjI3ByaW50KGxpbmUpCiAgICBpZiBsaW5lLmZpbmQoIiBzaWcgIikgPT0gLTE6CiAg ICAgICAgICAgIGNvbnRpbnVlCiAgICBzaWcgPSByZS5zZWFyY2goJ3NpZyAoMHhbMC05YS1m QS1GXSspJywgbGluZSkuZ3JvdXAoMSkKICAgIHJldiA9IHJlLnNlYXJjaCgncmV2ICgweFsw LTlhLWZBLUZdKyknLCBsaW5lKS5ncm91cCgxKQogICAgc2lnID0gaW50KHNpZywgMTYpCiAg ICByZXYgPSBpbnQocmV2LCAxNikKICAgIGRlYnVnX3JldiA9IGJpdHMocmV2LCAzMSwgMzEp CiAgICBpZiBkZWJ1Z19yZXYgIT0gMDoKICAgICAgICAgICAgI3ByaW50KCJFUlJPUjogZGVi dWcgdWNvZGUgZmlsZSBmb3VuZCwgZXhpdGluZyIpCiAgICAgICAgICAgIHN5cy5leGl0KDEp OwoKICAgIHNpZ3JldiA9IHt9CiAgICBzaWdyZXZbJ3NpZyddID0gc2lnCiAgICBzaWdyZXZb J3JldiddID0gcmV2CiAgICBzaWdsaXN0ID0gc2lnbGlzdCArIFsgc2lncmV2IF0KCnNpZ2Rp Y3QgPSB7fQoKZm9yIHNyIGluIHNpZ2xpc3Q6CiAgICAgICAgZXhpc3RpbmcgPSBzaWdkaWN0 LmdldChzclsnc2lnJ10pCiAgICAgICAgaWYgZXhpc3RpbmcgIT0gTm9uZToKICAgICAgICAg ICAgICAgICMgSWYgdGhlIGV4aXN0aW5nIG9uZSBpcyBuZXdlciwganVzdCBtb3ZlIG9uOgog ICAgICAgICAgICAgICAgaWYgZXhpc3RpbmdbJ3JldiddID4gc3JbJ3JldiddOgogICAgICAg ICAgICAgICAgICAgICNwcmludCgiY29sbGlzaW9uICVzICVzID0+ICVzIiAlIChzclsnc2ln J10sIHNyWydyZXYnXSwgZXhpc3RpbmdbJ3JldiddKSkKICAgICAgICAgICAgICAgICAgICBj b250aW51ZQogICAgICAgIHNpZ2RpY3Rbc3JbJ3NpZyddXSA9IHNyCgpmb3Igc2lnIGluIHNp Z2RpY3Q6CiAgICByZXYgPSBzaWdkaWN0W3NpZ10KICAgIHByaW50KCJ7IC5mbGFncyA9IFg4 Nl9DUFVfSURfRkxBR19FTlRSWV9WQUxJRCwgLnZlbmRvciA9IFg4Nl9WRU5ET1JfSU5URUws IC5mYW1pbHkgPSAweCV4LCAgLm1vZGVsID0gMHglMDJ4LCAuc3RlcHBpbmdzID0gMHglMDR4 LCAuZHJpdmVyX2RhdGEgPSAweCV4IH0sIiAlIChmYW1pbHkoc2lnKSwgbW9kZWwoc2lnKSwg MTw8c3RlcChzaWcpLCByZXZbJ3JldiddKSkK --------------YwNmflRNchYFqapFSwGJiixW--