From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: x86/mce/AMD: Make sure banks were initialized before accessing them From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= Message-Id: Date: Sat, 15 Dec 2018 14:04:51 +0100 To: Borislav Petkov , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= Cc: John Clemens , Yazen Ghannam , Tony Luck , linux-edac@vger.kernel.org, Aravind Gopalakrishnan , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , x86@kernel.org List-ID: SGkgQm9yaXNsYXYsCgpPbiAyOS4xMS4yMDE4IDA5OjM3LCBCb3Jpc2xhdiBQZXRrb3Ygd3JvdGU6 Cj4gSGVyZSdzIGEgZmlyc3Qgc2ltcGxlIHRyeSB0byBkbyB0aGUgaW5pdGlhbGl6YXRpb24gb2Yg dGhlIG5lZWRlZAo+IHN0cnVjdHVyZXMgbXVjaCBlYXJsaWVyIHNvIHRoYXQgdGhlIHRocmVzaG9s ZGluZyBpbnRlcnJ1cHQgY2FuIGZ1bmN0aW9uCj4gZWFybGllciBhbmQgbWF5YmUgY2F0Y2ggeW91 ciBNQ0VzLgo+IAo+IFBsZWFzZSBhcHBseSBpdCBvbnRvcCBhbmQgc2VuZCBtZSBmdWxsIGRtZXNn Lgo+IAo+IFRoeC4KPiAKPiAtLS0KPiBkaWZmIC0tZ2l0IGEvYXJjaC94ODYva2VybmVsL2NwdS9t Y2hlY2svbWNlLmMgYi9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2UuYwo+IGluZGV4IDM2 ZDI2OTZjOTU2My4uYTVkOGU3YWQ3MDQ2IDEwMDY0NAo+IC0tLSBhL2FyY2gveDg2L2tlcm5lbC9j cHUvbWNoZWNrL21jZS5jCj4gKysrIGIvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLmMK PiBAQCAtMTc0NywxMCArMTc0Nyw5IEBAIHN0YXRpYyB2b2lkIF9fbWNoZWNrX2NwdV9pbml0X3Zl bmRvcihzdHJ1Y3QgY3B1aW5mb194ODYgKmMpCj4gICAJCW1jZV9hZGp1c3RfdGltZXIgPSBjbWNp X2ludGVsX2FkanVzdF90aW1lcjsKPiAgIAkJYnJlYWs7Cj4gICAKPiAtCWNhc2UgWDg2X1ZFTkRP Ul9BTUQ6IHsKPiArCWNhc2UgWDg2X1ZFTkRPUl9BTUQ6Cj4gICAJCW1jZV9hbWRfZmVhdHVyZV9p bml0KGMpOwo+ICAgCQlicmVhazsKPiAtCQl9Cj4gICAKPiAgIAljYXNlIFg4Nl9WRU5ET1JfSFlH T046Cj4gICAJCW1jZV9oeWdvbl9mZWF0dXJlX2luaXQoYyk7Cj4gQEAgLTI0MTEsNyArMjQxMCw3 IEBAIHN0YXRpYyBfX2luaXQgaW50IG1jaGVja19pbml0X2RldmljZSh2b2lkKQo+ICAgCj4gICAJ cmV0dXJuIGVycjsKPiAgIH0KPiAtZGV2aWNlX2luaXRjYWxsX3N5bmMobWNoZWNrX2luaXRfZGV2 aWNlKTsKPiArY29yZV9pbml0Y2FsbChtY2hlY2tfaW5pdF9kZXZpY2UpOwo+ICAgCj4gICAvKgo+ ICAgICogT2xkIHN0eWxlIGJvb3Qgb3B0aW9ucyBwYXJzaW5nLiBPbmx5IGZvciBjb21wYXRpYmls aXR5Lgo+IGRpZmYgLS1naXQgYS9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2VfYW1kLmMg Yi9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2VfYW1kLmMKPiBpbmRleCBlMTI0NTRlMjFi OGEuLjIyN2U1MGM3MzIxNyAxMDA2NDQKPiAtLS0gYS9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVj ay9tY2VfYW1kLmMKPiArKysgYi9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2VfYW1kLmMK PiBAQCAtMTQzNCw0ICsxNDM0LDQgQEAgc3RhdGljIF9faW5pdCBpbnQgdGhyZXNob2xkX2luaXRf ZGV2aWNlKHZvaWQpCj4gICAgKiB3aGVuIHJ1bm5pbmcgdW5kZXIgeGVuLCB0aGUgaW5pdGNhbGwg b3JkZXIgaXMgMSwyLDM7Cj4gICAgKiBvbiBiYXJlbWV0YWwsIHdlIHNraXAgMSBhbmQgd2UgZG8g b25seSAyIGFuZCAzLgo+ICAgICovCj4gLWxhdGVfaW5pdGNhbGwodGhyZXNob2xkX2luaXRfZGV2 aWNlKTsKPiArY29yZV9pbml0Y2FsbF9zeW5jKHRocmVzaG9sZF9pbml0X2RldmljZSk7Cgpjb3Vs ZCB5b3UgZWxhYm9yYXRlIG9uIHdoYXQncyB3cm9uZyB3aXRoIHRoZSBhYm92ZSBkaWZmIChlLmcu IGhvdyBtYXkgaXQKYmxvdyB1cCB4ZW4pLCBwbGVhc2U/CgpJIGRpZCBzb21lIHJlc2VhcmNoIGFu ZCBpdCBpc24ndCBjbGVhciB0byBtZS4KClJpZ2h0IG5vdyB3ZSBoYXZlIDQgaW5pdCBjYWxscy4g SSdsbCBsaXN0IHRoZW0gb3JkZXJlZDoKCjEpIGRldmljZV9pbml0Y2FsbCh4ZW5fbGF0ZV9pbml0 X21jZWxvZykgLSBmcm9tIHhlbi9tY2Vsb2cuYwogICAgKiBDYWxscyBtaXNjX3JlZ2lzdGVyKCkg c28gaGFzIHRvIGhhcHBlbiBhZnRlciBzdWJzeXNfaW5pdGNhbGwoKQogICAgKiBSYWNlcyBvbiBy ZWdpc3RlcmluZyAvZGV2L21jZWxvZyB3aXRoIGRldl9tY2Vsb2dfaW5pdF9kZXZpY2UKICAgICog SGFzIHRvIGV4ZWN1dGUgYmVmb3JlIGRldl9tY2Vsb2dfaW5pdF9kZXZpY2UKCjIpIGRldmljZV9p bml0Y2FsbF9zeW5jKG1jaGVja19pbml0X2RldmljZSkgLSBmcm9tIG1jaGVjay9tY2UuYwogICAg KiBJbml0aWFsaXplcyBiYW5rcyAmIGRldmljZXMKCjMpIGRldmljZV9pbml0Y2FsbF9zeW5jKGRl dl9tY2Vsb2dfaW5pdF9kZXZpY2UpIC0gZnJvbSBtY2hlY2svZGV2LW1jZWxvZy5jCiAgICAqIENh bGxzIG1pc2NfcmVnaXN0ZXIoKSBzbyBoYXMgdG8gaGFwcGVuIGFmdGVyIHN1YnN5c19pbml0Y2Fs bCgpCiAgICAqIFJhY2VzIG9uIHJlZ2lzdGVyaW5nIC9kZXYvbWNlbG9nIHdpdGggeGVuX2xhdGVf aW5pdF9tY2Vsb2cKICAgICogSGFzIHRvIGV4ZWN1dGUgYWZ0ZXIgZGV2X21jZWxvZ19pbml0X2Rl dmljZQoKNCkgbGF0ZV9pbml0Y2FsbCh0aHJlc2hvbGRfaW5pdF9kZXZpY2UpIC0gZnJvbSBtY2hl Y2svbWNlX2FtZC5jCiAgICAqIEhhcyB0byBiZSBjYWxsZWQgYWZ0ZXIgbWNoZWNrX2luaXRfZGV2 aWNlCgpUaGF0IGNvbWVzIGZyb20gbXkgcmVzZWFyY2ggJiBtYXRjaGVzIGNvbW1lbnQgaW4gdGhl IG1jZV9hbWQuYy4KCllvdXIgcGF0Y2ggY2hhbmdlcyBpbml0IHRpbWUgb2YgbWNoZWNrX2luaXRf ZGV2aWNlKCkgYW5kCnRocmVzaG9sZF9pbml0X2RldmljZSgpOgoxKSBUaGUgb3JkZXIgb2YgdGhl c2UgdHdvIGlzIHN0aWxsIGNvcnJlY3QKMikgSXQgZG9lc24ndCBhZmZlY3Qgb3JkZXIgb2YgaW5p dGlhbGl6aW5nIC9kZXYvbWNlbG9nCgpUaGUgb25seSByZWFsIGNoYW5nZSBpcyBpbml0aWFsaXpp bmcgYmFua3MgJiBkZXZpY2VzIGJlZm9yZSBYRU4gZHJpdmVyCmdldHMgYSBjaGFuY2UgdG8gcmVn aXN0ZXIgL2Rldi9tY2Vsb2cgYnV0IEkgZG9uJ3QgdGhpbmsgaXQgbWF0dGVycy4K