From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter P Waskiewicz Jr Subject: Re: [PATCH] [arch-x86] Allow SRAT integrity check to be skipped Date: Tue, 07 Sep 2010 13:16:55 -0700 Message-ID: <1283890615.18468.11.camel@pjaxe> References: <20100901213318.19353.54619.stgit@localhost.localdomain> <20100902065731.GB29972@elte.hu> <20100902100308.GA17167@basil.fritz.box> <20100903063934.GA25863@elte.hu> <1283888337.18468.9.camel@pjaxe> <4C869AA3.6000103@zytor.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="sha1"; protocol="application/x-pkcs7-signature"; boundary="=-KzagmC3GXa+F/HUmQPr0" Cc: Ingo Molnar , Andi Kleen , "tglx@linutronix.de" , "mingo@redhat.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" To: "H. Peter Anvin" Return-path: In-Reply-To: <4C869AA3.6000103@zytor.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org --=-KzagmC3GXa+F/HUmQPr0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2010-09-07 at 13:03 -0700, H. Peter Anvin wrote: > On 09/07/2010 12:38 PM, Peter P Waskiewicz Jr wrote: > >=20 > > It's one SKU of a Nehalem-EX system. The BIOS for that SKU has an issu= e > > with resolving SRAT hotplug enumeration, and screws up the table. Othe= r > > SKU's of this same platform do not have the issue. Efforts are underwa= y > > to get this BIOS fixed, but in the meantime, there's nothing for users > > to work around the bug (aside from disabling memory hotplug in the > > BIOS). Another platform almost shipped with the same symptoms, but > > caught it and had it fixed before it shipped (didn't catch it early > > because Windows wasn't failing, and most of the testing on that platfor= m > > was done under Windows). > >=20 > > I agree with Andi that adding DMI strings would be overkill and would > > leave clutter once the BIOS is fixed. I look at this patch as a > > stop-gap measure for people to fall back on until a newer BIOS is > > available to correct the NUMA enumeration issues. Without it, we have > > nothing to point users to when they run into this, waiting for a new > > BIOS. > >=20 >=20 > No, this is exactly the kind of stuff for which a DMI match is ideal. A > specific system with bounded propagation of the problem. Thus, the DMI > match acts as a whitelist -- "we know this system and it is safe to > activate this hack on it." This is a very good thing. >=20 > If this is a production BIOS it should have this information. Responding for both your and Ingo's last email, I'll work on getting a DMI match for this system. Thanks, -PJ --=-KzagmC3GXa+F/HUmQPr0 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIPAjCCAz0w ggKmoAMCAQICAwWw/zANBgkqhkiG9w0BAQUFADBOMQswCQYDVQQGEwJVUzEQMA4GA1UEChMHRXF1 aWZheDEtMCsGA1UECxMkRXF1aWZheCBTZWN1cmUgQ2VydGlmaWNhdGUgQXV0aG9yaXR5MB4XDTA2 MDIxNjE4MDEzMFoXDTE2MDIxOTE4MDEzMFowUjELMAkGA1UEBhMCVVMxGjAYBgNVBAoTEUludGVs IENvcnBvcmF0aW9uMScwJQYDVQQDEx5JbnRlbCBFeHRlcm5hbCBCYXNpYyBQb2xpY3kgQ0EwggEi MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDBpd/XOb9QVqEZ8mQ1042TdOIq3ATDIsV2xDyt 30yLyMR5Wjtus0bn3B+he89BiNO/LP6+rFzEwlD55PlX+HLGIKeNNG97dqyc30FElEUjZzTZFq2N 4e3kVJ/XAEEgANzV8v9qp7qWwxugPgfc3z9BkYot+CifozexHLb/hEZj+yISCU61kRZvuSQ0E11y YL4dRgcglJeaHo3oX57rvIckaLsYV5/1Aj+R8DM1Ppk965XQAKsHfnyT7C4S50T4lVn4lz36wOdN Zn/zegG1zp41lnoTFfT4KuKVJH5x7YD1p6KbgJCKLovnujGuohquBNfdXKpZkvz6pGv+iC1HawJd AgMBAAGjgaAwgZ0wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBQaxgxKxEdvqNutK/D0Vgaj7TdU DDA6BgNVHR8EMzAxMC+gLaArhilodHRwOi8vY3JsLmdlb3RydXN0LmNvbS9jcmxzL3NlY3VyZWNh LmNybDAfBgNVHSMEGDAWgBRI5mj5K9KylddH2CMgEE8zmJCf1DAPBgNVHRMBAf8EBTADAQH/MA0G CSqGSIb3DQEBBQUAA4GBABMQOK2kVKVIlUWwLTdywJ+e2O+PC/uQltK2F3lRyrPfBn69tOkIP4Sg DJOfsxyobIrPLe75kBLw+Dom13OBDp/EMZJZ1CglQfVV8co9mT3aZMjSGGQiMgkJLR3jMfr900fX ZKj5XeqCJ+JP0mEhJGEdVCY+FFlksJjV86fDrq1QMIIFijCCBHKgAwIBAgIKYSCKYgAAAAAACDAN BgkqhkiG9w0BAQUFADBSMQswCQYDVQQGEwJVUzEaMBgGA1UEChMRSW50ZWwgQ29ycG9yYXRpb24x JzAlBgNVBAMTHkludGVsIEV4dGVybmFsIEJhc2ljIFBvbGljeSBDQTAeFw0wOTA1MTUxOTI3MjZa Fw0xNTA1MTUxOTM3MjZaMFYxCzAJBgNVBAYTAlVTMRowGAYDVQQKExFJbnRlbCBDb3Jwb3JhdGlv bjErMCkGA1UEAxMiSW50ZWwgRXh0ZXJuYWwgQmFzaWMgSXNzdWluZyBDQSAzQjCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAKQEM1Wn9TU9vc9C+/Tc7KB+eiYElmrcEWE32WUdHvWG+IcQ HVQsikTmMyKKojNLw2B5s6Iekc8ivDo/wCfjZzX9JyftMnc+AArc0la87Olybzm8K9jXEfTBvTnU SFSiI9ZYefITdiUgqlAFuljFZEHYKYtLuhrRacpmQfP4mV63NKdc2bT804HRf6YptZFa4k6YN94z lrGNrBuQQ74WFzz/jLBusbUpEkro6Mu/ZYFOFWQrV9lBhF9Ruk8yN+3N6n9fUo/qBigiF2kEn9xV h1ykl7SCGL2jBUkXx4qgV27a6Si8lRRdgrHGtN/HWnSWlLXTH5l575H4Lq++77OFv38CAwEAAaOC AlwwggJYMA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYEFA7GKvdZsggQkCVvw939imYxMCvFMAsG A1UdDwQEAwIBhjASBgkrBgEEAYI3FQEEBQIDAQABMCMGCSsGAQQBgjcVAgQWBBQ5oFY2ekKQ/5Kt im+VdMeSWb4QWTAZBgkrBgEEAYI3FAIEDB4KAFMAdQBiAEMAQTAfBgNVHSMEGDAWgBQaxgxKxEdv qNutK/D0Vgaj7TdUDDCBvQYDVR0fBIG1MIGyMIGvoIGsoIGphk5odHRwOi8vd3d3LmludGVsLmNv bS9yZXBvc2l0b3J5L0NSTC9JbnRlbCUyMEV4dGVybmFsJTIwQmFzaWMlMjBQb2xpY3klMjBDQS5j cmyGV2h0dHA6Ly9jZXJ0aWZpY2F0ZXMuaW50ZWwuY29tL3JlcG9zaXRvcnkvQ1JML0ludGVsJTIw RXh0ZXJuYWwlMjBCYXNpYyUyMFBvbGljeSUyMENBLmNybDCB4wYIKwYBBQUHAQEEgdYwgdMwYwYI KwYBBQUHMAKGV2h0dHA6Ly93d3cuaW50ZWwuY29tL3JlcG9zaXRvcnkvY2VydGlmaWNhdGVzL0lu dGVsJTIwRXh0ZXJuYWwlMjBCYXNpYyUyMFBvbGljeSUyMENBLmNydDBsBggrBgEFBQcwAoZgaHR0 cDovL2NlcnRpZmljYXRlcy5pbnRlbC5jb20vcmVwb3NpdG9yeS9jZXJ0aWZpY2F0ZXMvSW50ZWwl MjBFeHRlcm5hbCUyMEJhc2ljJTIwUG9saWN5JTIwQ0EuY3J0MA0GCSqGSIb3DQEBBQUAA4IBAQCx tQEHchVQhXyjEqtMVUMe6gkmPsIczHxSeqNbo9dsD+6xbT65JT+oYgpIAtfEsYXeUJu1cChqpb22 U5bMAz7eaQcW5bzefufWvA6lg2048B8oczBj/q+5P5NpYrUO8jOmN4jTjfJq3ElZ7yFWpy7rB3Vm /aN6ATYqWfMbS/xfh+JCxmH3droUmMJI0/aZJHsLtjbjFnNsHDNrJZX1vxlM78Lb1hjskTENPmhb VbfTj5i/ZGnhv4tmI8QZPCNtcegXJrfhRl2D9bWpdTOPrWiLDUqzy1Z6KL7TcOS/PCl8RHCJXkPa u/thTQCpIoDa2+c+3XA++gRTfAQ4svTO260NMIIGLzCCBRegAwIBAgIKf0es/QABAABRFTANBgkq hkiG9w0BAQUFADBWMQswCQYDVQQGEwJVUzEaMBgGA1UEChMRSW50ZWwgQ29ycG9yYXRpb24xKzAp BgNVBAMTIkludGVsIEV4dGVybmFsIEJhc2ljIElzc3VpbmcgQ0EgM0IwHhcNMTAwNDA5MDgyNzMw WhcNMTMwMzI0MDgyNzMwWjBRMR8wHQYDVQQDExZXYXNraWV3aWN6IEpyLCBQZXRlciBQMS4wLAYJ KoZIhvcNAQkBFh9wZXRlci5wLndhc2tpZXdpY3ouanJAaW50ZWwuY29tMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAxNvzDG+qS7UFSaYiqMqQr7exXHirCVe1tapLZoFlJZLPfqZsBsAA UqARnY+v3RQj3WDmoIOtTMHxtnmo4pd5UXrsk+PraedGAilso9tkfp5ZjRjZo9LL06AZzjiBVfAx gvyxMPsoKhdfFijzqSJRpc12kB662PAJWfyJO+f6lg5+Cd4KgRVGrpGI4bvBKEVGMeOqwD+kcVti wRcqNygx35GqdcpJCCJqOSAJsLI3DR7tDvATeNzsasweaHgWonaK4D6qaHkoGx4VHknC6uNn/FK/ wXtFbXkeOrnRGJIzaZNsOBVhTou9w3NYU1EjuK75hZJ4Fd4/r1gHafxWD+VzrwIDAQABo4IDAjCC Av4wCwYDVR0PBAQDAgeAMDwGCSsGAQQBgjcVBwQvMC0GJSsGAQQBgjcVCIbDjHWEmeVRg/2BKIWO n1OCkcAJZ4HevTmV8EMCAWQCAQgwHQYDVR0OBBYEFLtB44dRTSgY1071RY+nMiKRkn1PMB8GA1Ud IwQYMBaAFA7GKvdZsggQkCVvw939imYxMCvFMIHPBgNVHR8EgccwgcQwgcGggb6ggbuGV2h0dHA6 Ly93d3cuaW50ZWwuY29tL3JlcG9zaXRvcnkvQ1JML0ludGVsJTIwRXh0ZXJuYWwlMjBCYXNpYyUy MElzc3VpbmclMjBDQSUyMDNCKDEpLmNybIZgaHR0cDovL2NlcnRpZmljYXRlcy5pbnRlbC5jb20v cmVwb3NpdG9yeS9DUkwvSW50ZWwlMjBFeHRlcm5hbCUyMEJhc2ljJTIwSXNzdWluZyUyMENBJTIw M0IoMSkuY3JsMIH1BggrBgEFBQcBAQSB6DCB5TBsBggrBgEFBQcwAoZgaHR0cDovL3d3dy5pbnRl bC5jb20vcmVwb3NpdG9yeS9jZXJ0aWZpY2F0ZXMvSW50ZWwlMjBFeHRlcm5hbCUyMEJhc2ljJTIw SXNzdWluZyUyMENBJTIwM0IoMSkuY3J0MHUGCCsGAQUFBzAChmlodHRwOi8vY2VydGlmaWNhdGVz LmludGVsLmNvbS9yZXBvc2l0b3J5L2NlcnRpZmljYXRlcy9JbnRlbCUyMEV4dGVybmFsJTIwQmFz aWMlMjBJc3N1aW5nJTIwQ0ElMjAzQigxKS5jcnQwHwYDVR0lBBgwFgYIKwYBBQUHAwQGCisGAQQB gjcKAwwwKQYJKwYBBAGCNxUKBBwwGjAKBggrBgEFBQcDBDAMBgorBgEEAYI3CgMMMFsGA1UdEQRU MFKgLwYKKwYBBAGCNxQCA6AhDB9wZXRlci5wLndhc2tpZXdpY3ouanJAaW50ZWwuY29tgR9wZXRl ci5wLndhc2tpZXdpY3ouanJAaW50ZWwuY29tMA0GCSqGSIb3DQEBBQUAA4IBAQBYea1KThIl9gNf 1uIob1trWtsthhWAXsdUu1V+gl10RBChuM4okZccJf1JXItFA2z7J2UR4cu/tRZBRFartVPhGBjK ntLofxsaW7wwzfsinbNy30gHGShG83XDADdGUteL8PmupDcDf/MtbRIlfjEknLiuOnrM25WVajtB 3fB1pOA2jmLaaNmasza9ordaD3afJD3IWr/Zj+aevMu4zrKzwdOZqBZW1J1Qc7uog8Mn+mm+wRMm EY0z7VFdjsZjJH9EQA0UbF1aYcshv0a/M2deKN9TdYuJ1eTKRSZdzSiRG5w75xujFMYZgo4ETlu1 Behgey1jvJiyWdOsPt7at08QMYIB6jCCAeYCAQEwZDBWMQswCQYDVQQGEwJVUzEaMBgGA1UEChMR SW50ZWwgQ29ycG9yYXRpb24xKzApBgNVBAMTIkludGVsIEV4dGVybmFsIEJhc2ljIElzc3Vpbmcg Q0EgM0ICCn9HrP0AAQAAURUwCQYFKw4DAhoFAKBdMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEw HAYJKoZIhvcNAQkFMQ8XDTEwMDkwNzIwMTY1NVowIwYJKoZIhvcNAQkEMRYEFMrXr3px3inBX2/m xKva9c2OzDCdMA0GCSqGSIb3DQEBAQUABIIBABdR5ZmwugWEVMDIIIz8Z+rukXT4An6Hkv9QpJHn I12p0aQJScyNB7LELZ2+l6HJAEd2FsmUNhVAD3HybMDzllft+vMcjbx4DSDUM2bnkg54iNkmE3TZ ckriT5l+HjX/1ZMlm7+TA2sLhfDXNnJphD21eaAQXyd+O+YrN7OMYNRGMs3iS5JpYxjh3i75UD3q D7SDWZxLd6CWzrxyDAgRMtbcYYdZC6PHO/Ura5DCNYuF6ofMonl8K7jvOrICwoIMAJfRIvjTRoDp cX32+15YZPdad2cfn0hZOv7qGdR9ixSCF+jDmCx10zBJQJo8yIWIWuL6xJxOcZGfXD7EYxvetxsA AAAAAAA= --=-KzagmC3GXa+F/HUmQPr0--