Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752800AbaKJUhq (ORCPT ); Mon, 10 Nov 2014 15:37:46 -0500 Received: from mail-ig0-f179.google.com ([209.85.213.179]:65237 "EHLO mail-ig0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752038AbaKJUho (ORCPT ); Mon, 10 Nov 2014 15:37:44 -0500 Message-ID: <5461220E.20605@gmail.com> Date: Mon, 10 Nov 2014 15:37:34 -0500 From: Austin S Hemmelgarn User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Matthew Garrett CC: =?ISO-8859-1?Q?Pali_Roh=E1r?= , Matt Fleming , Borislav Petkov , Mark Salter , Alessandro Zummo , rtc-linux@googlegroups.com, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Dave Young , "H. Peter Anvin" Subject: Re: [PATCH] rtc: Disable EFI rtc for x86 References: <1412339576-17972-1-git-send-email-matt@console-pimps.org> <20141109182231.GA29337@pd.tnic> <1415618533.14686.239.camel@mfleming-mobl1.ger.corp.intel.com> <201411101723.49197@pali> <5460EB92.1090501@gmail.com> <20141110170417.GA17286@srcf.ucam.org> In-Reply-To: <20141110170417.GA17286@srcf.ucam.org> x-hashcash: 1:21:141110:mjg59@srcf.ucam.org::94527a89c0d77f721e0ee88fbfa78c4b:bff6ef07150ce2a0 x-hashcash: 1:21:141110:pali.rohar@gmail.com::b0809378f145b36523a07a23b198161:9d849b9bd38474b x-hashcash: 1:21:141110:matt.fleming@intel.com::b0e139ebc8cc08bd48aa6686661069d8:6a84dcdad41076e2 x-hashcash: 1:21:141110:bp@alien8.de::39c67ee621a2e696f9d3b31d336c5538:f4f286233cfcc924 x-hashcash: 1:21:141110:msalter@redhat.com::eabbf125afa40fd8e40b0deeaeed932b:1861c0987e666304 x-hashcash: 1:21:141110:a.zummo@towertech.it::3167283eeb5b41aba23ada63dc931fe2:2f1b76a24092566b x-hashcash: 1:21:141110:rtc-linux@googlegroups.com::691667b8293c551576c550abe68d1d92:997ee8dae89b5bd3 x-hashcash: 1:21:141110:linux-efi@vger.kernel.org::bf1265e38965f63052356f772ba7c984:d12bb449d01521f1 x-hashcash: 1:21:141110:linux-kernel@vger.kernel.org::3221f035b388e914e5b23125188d1938:b836d7cf9ff51988 x-hashcash: 1:21:141110:dyoung@redhat.com::88f72d5a8fe81febab7e09beb2a0138f:7270a3958fe679e3 x-hashcash: 1:21:141110:hpa@zytor.com::e5998c1280c2a1559fba043be434ff83:28dba5ff031623e x-stampprotocols: hashcash:1:17;mbound:0:10:3000:5000 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms050800080806010502030603" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms050800080806010502030603 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable On 2014-11-10 12:04, Matthew Garrett wrote: > On Mon, Nov 10, 2014 at 11:45:06AM -0500, Austin S Hemmelgarn wrote: > >> I agree, without it you need PC CMOS RTC support to access the RTC >> on most systems, which in turn means that you have to enable the CSM >> in the EFI firmware, which is annoying cause you can't easily dual >> boot windows with secure boot when the CSM is enabled. > > CMOS RTC support doesn't depend on the CSM. > That's really interesting, because with it compiled in, I can't boot on=20 my EFI based thinkpad laptop without telling EFI to launch the CSM, and=20 with it compiled out, I can boot fine without the CSM. I'll have to=20 look further into the options I have set in my kernel build, I may have=20 changed something else without remembering between booting with and=20 without the CSM enabled. --------------ms050800080806010502030603 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIFuDCC BbQwggOcoAMCAQICAw9gVDANBgkqhkiG9w0BAQ0FADB5MRAwDgYDVQQKEwdSb290IENBMR4w HAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNBIENlcnQgU2lnbmlu ZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRAY2FjZXJ0Lm9yZzAeFw0xNDA4 MDgxMTMwNDRaFw0xNTAyMDQxMTMwNDRaMGMxGDAWBgNVBAMTD0NBY2VydCBXb1QgVXNlcjEj MCEGCSqGSIb3DQEJARYUYWhmZXJyb2luN0BnbWFpbC5jb20xIjAgBgkqhkiG9w0BCQEWE2Fo ZW1tZWxnQG9oaW9ndC5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDdmm8R BM5D6fGiB6rpogPZbLYu6CkU6834rcJepfmxKnLarYUYM593/VGygfaaHAyuc8qLaRA3u1M0 Qp29flqmhv1VDTBZ+zFu6JgHjTDniBii1KOZRo0qV3jC5NvaS8KUM67+eQBjm29LhBWVi3+e a8jLxmogFXV0NGej+GHIr5zA9qKz2WJOEoGh0EfqZ2MQTmozcGI43/oqIYhRj8fRMkWXLUAF WsLzPQMpK19hD8fqwlxQWhBV8gsGRG54K5pyaQsjne7m89SF5M8JkNJPH39tHEvfv2Vhf7EM Y4WGyhLAULSlym1AI1uUHR1FfJaj3AChaEJZli/AdajYsqc7AgMBAAGjggFZMIIBVTAMBgNV HRMBAf8EAjAAMFYGCWCGSAGG+EIBDQRJFkdUbyBnZXQgeW91ciBvd24gY2VydGlmaWNhdGUg Zm9yIEZSRUUgaGVhZCBvdmVyIHRvIGh0dHA6Ly93d3cuQ0FjZXJ0Lm9yZzAOBgNVHQ8BAf8E BAMCA6gwQAYDVR0lBDkwNwYIKwYBBQUHAwQGCCsGAQUFBwMCBgorBgEEAYI3CgMEBgorBgEE AYI3CgMDBglghkgBhvhCBAEwMgYIKwYBBQUHAQEEJjAkMCIGCCsGAQUFBzABhhZodHRwOi8v b2NzcC5jYWNlcnQub3JnMDEGA1UdHwQqMCgwJqAkoCKGIGh0dHA6Ly9jcmwuY2FjZXJ0Lm9y Zy9yZXZva2UuY3JsMDQGA1UdEQQtMCuBFGFoZmVycm9pbjdAZ21haWwuY29tgRNhaGVtbWVs Z0BvaGlvZ3QuY29tMA0GCSqGSIb3DQEBDQUAA4ICAQCr4klxcZU/PDRBpUtlb+d6JXl2dfto OUP/6g19dpx6Ekt2pV1eujpIj5whh5KlCSPUgtHZI7BcksLSczQbxNDvRu6LNKqGJGvcp99k cWL1Z6BsgtvxWKkOmy1vB+2aPfDiQQiMCCLAqXwHiNDZhSkwmGsJ7KHMWgF/dRVDnsl6aOQZ jAcBMpUZxzA/bv4nY2PylVdqJWp9N7x86TF9sda1zRZiyUwy83eFTDNzefYPtc4MLppcaD4g Wt8U6T2ffQfCWVzDirhg4WmDH3MybDItjkSB2/+pgGOS4lgtEBMHzAGQqQ+5PojTHRyqu9Jc O59oIGrTaOtKV9nDeDtzNaQZgygJItJi9GoAl68AmIHxpS1rZUNV6X8ydFrEweFdRTVWhUEL 70Cnx84YBojXv01LYBSZaq18K8cERPLaIrUD2go+2ffjdE9ejvYDhNBllY+ufvRizIjQA1uC OdktVAN6auQob94kOOsWpoMSrzHHvOvVW/kbokmKzaLtcs9+nJoL+vPi2AyzbaoQASVZYOGW pE3daA0F5FJfcPZKCwd5wdnmT3dU1IRUxa5vMmgjP20lkfP8tCPtvZv2mmI2Nw5SaXNY4gVu WQrvkV2in+TnGqgEIwUrLVbx9G6PSYZZs07czhO+Q1iVuKdAwjL/AYK0Us9v50acIzbl5CWw ZGj3wjGCA6EwggOdAgEBMIGAMHkxEDAOBgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6 Ly93d3cuY2FjZXJ0Lm9yZzEiMCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEh MB8GCSqGSIb3DQEJARYSc3VwcG9ydEBjYWNlcnQub3JnAgMPYFQwCQYFKw4DAhoFAKCCAfUw GAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTQxMTEwMjAzNzM0 WjAjBgkqhkiG9w0BCQQxFgQUhwlNOp0hc8Gorm5JaZH5HzFtZjMwbAYJKoZIhvcNAQkPMV8w XTALBglghkgBZQMEASowCwYJYIZIAWUDBAECMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIA gDANBggqhkiG9w0DAgIBQDAHBgUrDgMCBzANBggqhkiG9w0DAgIBKDCBkQYJKwYBBAGCNxAE MYGDMIGAMHkxEDAOBgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0 Lm9yZzEiMCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJ ARYSc3VwcG9ydEBjYWNlcnQub3JnAgMPYFQwgZMGCyqGSIb3DQEJEAILMYGDoIGAMHkxEDAO BgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6Ly93d3cuY2FjZXJ0Lm9yZzEiMCAGA1UE AxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8GCSqGSIb3DQEJARYSc3VwcG9ydEBj YWNlcnQub3JnAgMPYFQwDQYJKoZIhvcNAQEBBQAEggEAtH1Em6bE9dGNIksyLudnw4cj+XiA 9RFanMsaohTnT++6wSQUWm0mvuEPTBj8DjAq+v3hVC5OxFsOStpmPieFBn4JSGZUgFLw3r2U fR2ZDjSRgAtMQmSsCt2zXnYIpZSEn3z+DERhEep8Jo6SlasoULmoqnsVWiHlcBwwCMgaXRKW 5SFSlgmE0sLZUl6THkTS6TamBJZl79Nqz2suzDZILFPF7FbMYTHkjCpJG+P4oWlAUhAgAChv UE6AXm9ZPV43BvWoBqQaqpG+0zspnBJlBYK58mVYP989kpARPt9JBMxMWgjoaqaUO7+T3Xkd DWwlBDftey8CJK+BX1yvaaVglAAAAAAAAA== --------------ms050800080806010502030603-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/