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Fri, 11 Nov 2022 12:12:05 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1D3B658061; Fri, 11 Nov 2022 12:12:06 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F65B58059; Fri, 11 Nov 2022 12:12:05 +0000 (GMT) Received: from [9.47.158.152] (unknown [9.47.158.152]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 11 Nov 2022 12:12:05 +0000 (GMT) Message-ID: <569c30f7-5dda-4ce2-e2c9-ce4041a74c8e@linux.ibm.com> Date: Fri, 11 Nov 2022 07:12:05 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH v8 0/4] tpm: Preserve TPM measurement log across kexec (ppc64) Content-Language: en-US To: Coiby Xu , Michael Ellerman Cc: kexec@lists.infradead.org, devicetree@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, nayna@linux.ibm.com, nasastry@in.ibm.com, Baoquan He References: <20220901214610.768645-1-stefanb@linux.ibm.com> <20221111022143.xvpi3pfwwrw4qda2@Rk> From: Stefan Berger In-Reply-To: <20221111022143.xvpi3pfwwrw4qda2@Rk> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 7XaGLry-dChDSYeNDXy6AbCJBpJEBkVY X-Proofpoint-GUID: TFAPSigYsZEZ_FQvINgy1j1zHKOjnma1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-11_06,2022-11-11_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 adultscore=0 spamscore=0 mlxscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 lowpriorityscore=0 phishscore=0 clxscore=1011 impostorscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2211110081 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221111_041217_906519_943F5C1B X-CRM114-Status: GOOD ( 24.07 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org CgpPbiAxMS8xMC8yMiAyMToyMSwgQ29pYnkgWHUgd3JvdGU6Cj4gSGkgTWljaGFlbCwKPiAKPiBD b3VsZCB0aGUgUG93ZXJQQyB0cmVlIHRha2UgdGhpcyBwYXRjaCBzZXQgd2hpY2ggcmVzb2x2ZXMg YQo+IFBvd2VyVk0vS1ZNLXNwZWNpZmljIGlzc3VlPwoKTWljaGFlbCBoYXMgKHNob3duIG1lKSBh biBhbHRlcm5hdGl2ZSBhcHByb2FjaCB0aGF0IHByb3RlY3RzIHRoZSBhbHJlYWR5IGFsbG9jYXRl ZCBtZW1vcnkgdG8gY2FycnkgaXQgYWNyb3NzIHRoZSBrZXhlYy4gVGhpcyBzZWVtcyBsaWtlIGEg Z29vZCBhbmQgcG90ZW50aWFsbHkgYmV0dGVyIGFsdGVybmF0aXZlLCBhbHNvIGZyb20gdGhlIHBl cnNwZWN0aXZlIG9mIHRoZSBjaGFuZ2VzIG5lZWQsIHdoaWNoIGlzIGEgbG90IGxlc3MgLCBhbmQg aXQncyBhbHJlYWR5IHVzZWQgZm9yIG90aGVyIHN0dWZmIGFzIHdlbGwuCgogICAgU3RlZmFuCgo+ IAo+IE9uIFRodSwgU2VwIDAxLCAyMDIyIGF0IDA1OjQ2OjA2UE0gLTA0MDAsIFN0ZWZhbiBCZXJn ZXIgd3JvdGU6Cj4+IFRoZSBvZi10cmVlIHN1YnN5c3RlbSBkb2VzIG5vdCBjdXJyZW50bHkgcHJl c2VydmUgdGhlIElCTSB2VFBNIDEuMiBhbmQKPj4gdlRQTSAyLjAgbWVhc3VyZW1lbnQgbG9ncyBh Y3Jvc3MgYSBrZXhlYyBvbiBQb3dlclZNIGFuZCBQb3dlcktWTS4gVGhpcwo+PiBzZXJpZXMgZml4 ZXMgdGhpcyBmb3IgdGhlIGtleGVjX2ZpbGVfbG9hZCgpIHN5c2NhbGwgdXNpbmcgdGhlIGZsYXR0 ZW5lZAo+PiBkZXZpY2UgdHJlZSAoZmR0KSB0byBjYXJyeSB0aGUgVFBNIG1lYXN1cmVtZW50IGxv ZydzIGJ1ZmZlciBhY3Jvc3Mga2V4ZWMuCj4+Cj4+IMKgIFN0ZWZhbgo+Pgo+PiB2ODoKPj4gLSBB ZGRlZCBKYXJra28ncywgQ29pYnkncywgYW5kIFJvYidzIHRhZ3MKPj4gLSBSZWJhc2Ugb24gdjYu MC1yYzMgdGhhdCBhYnNvcmJlZCAyIGFscmVhZHkgdXBzdHJlYW1lZCBwYXRjaGVzCj4+Cj4+IHY3 Ogo+PiAtIEFkZGVkIE5hZ2Vzd2FyYSdzIFRlc3RlZC1ieSB0YWdzCj4+IC0gQWRkZWQgYmFjayBv cmlnaW5hbCBjb21tZW50IHRvIGlubGluZSBmdW5jdGlvbiBhbmQgcmVtb3ZlZCBKYXJra28ncyBS LWIgdGFnCj4+Cj4+IHY2Ogo+PiAtIEFkZCBfX2luaXQgdG8gZ2V0X2tleGVjX2J1ZmZlciBhcyBz dWdnZXN0ZWQgYnkgSm9uYXRoYW4KPj4gLSBGaXhlZCBpc3N1ZSBkZXRlY3RlZCBieSBrZXJuZWwg dGVzdCByb2JvdAo+Pgo+PiB2NToKPj4gLSBSZWJhc2VkIG9uIDEgbW9yZSBwYXRjaCB0aGF0IHdv dWxkIG90aGVyd2lzZSBjcmVhdGUgbWVyZ2UgY29uZmxpY3RzCj4+Cj4+IHY0Ogo+PiAtIFJlYmFz ZWQgb24gMiBwYXRjaGVzIHRoYXQgd291bGQgb3RoZXJ3aXNlIGNyZWF0ZSBtZXJnZSBjb25mbGlj dHM7Cj4+IMKgIHBvc3RpbmcgdGhlc2UgcGF0Y2hlcyBpbiB0aGlzIHNlcmllcyB3aXRoIHNldmVy YWwgdGFncyByZW1vdmVkIHNvCj4+IMKgIGtyb2JvdCBjYW4gdGVzdCB0aGUgc2VyaWVzIGFscmVh ZHkKPj4gLSBDaGFuZ2VzIHRvIGluZGl2aWR1YWwgcGF0Y2hlcyBkb2N1bWVudGVkIGluIHBhdGNo IGRlc2NyaXBpdG9ucwo+Pgo+PiB2MzoKPj4gLSBNb3ZlZCBUUE0gT3BlbiBGaXJtd2FyZSByZWxh dGVkIGZ1bmN0aW9uIHRvIGRyaXZlcnMvY2hhci90cG0vZXZlbnRsb2cvdHBtX29mLmMKPj4KPj4g djI6Cj4+IC0gcmVhcnJhbmdlZCBwYXRjaGVzCj4+IC0gZml4ZWQgY29tcGlsYXRpb24gaXNzdWVz IGZvciB4ODYKPj4KPj4gUGFsbWVyIERhYmJlbHQgKDEpOgo+PiDCoGRyaXZlcnM6IG9mOiBrZXhl YyBpbWE6IFN1cHBvcnQgMzItYml0IHBsYXRmb3Jtcwo+Pgo+PiBTdGVmYW4gQmVyZ2VyICgzKToK Pj4gwqB0cG06IG9mOiBNYWtlIG9mLXRyZWUgc3BlY2lmaWMgZnVuY3Rpb24gY29tbW9ubHkgYXZh aWxhYmxlCj4+IMKgb2Y6IGtleGVjOiBSZWZhY3RvciBJTUEgYnVmZmVyIHJlbGF0ZWQgZnVuY3Rp b25zIHRvIG1ha2UgdGhlbSByZXVzYWJsZQo+PiDCoHRwbS9rZXhlYzogRHVwbGljYXRlIFRQTSBt ZWFzdXJlbWVudCBsb2cgaW4gb2YtdHJlZSBmb3Iga2V4ZWMKPj4KPj4gZHJpdmVycy9jaGFyL3Rw bS9ldmVudGxvZy9vZi5jIHzCoCAzMSArLS0KPj4gZHJpdmVycy9vZi9rZXhlYy5jwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgIHwgMzM2ICsrKysrKysrKysrKysrKysrKysrKysrKysrKystLS0tLQo+ PiBpbmNsdWRlL2xpbnV4L2tleGVjLmjCoMKgwqDCoMKgwqDCoMKgwqAgfMKgwqAgNiArCj4+IGlu Y2x1ZGUvbGludXgvb2YuaMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCB8wqDCoCA5ICstCj4+IGlu Y2x1ZGUvbGludXgvdHBtLmjCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHzCoCAzNiArKysrCj4+IGtl cm5lbC9rZXhlY19maWxlLmPCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIHzCoMKgIDYgKwo+PiA2IGZp bGVzIGNoYW5nZWQsIDM0NiBpbnNlcnRpb25zKCspLCA3OCBkZWxldGlvbnMoLSkKPj4KPj4KPj4g YmFzZS1jb21taXQ6IGI5MGNiMTA1MzE5MDM1M2NjMzBmMGZlZjBlZjFmMzc4Y2NjMDYzYzUKPj4g LS0gCj4+IDIuMzUuMQo+Pgo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18Ka2V4ZWMgbWFpbGluZyBsaXN0CmtleGVjQGxpc3RzLmluZnJhZGVhZC5vcmcK aHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9rZXhlYwo=