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: <20181127101700.2964-1-zajec5@gmail.com> Date: Tue, 27 Nov 2018 11:17:00 +0100 To: Tony Luck , Borislav Petkov Cc: linux-edac@vger.kernel.org, Yazen Ghannam , Aravind Gopalakrishnan , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , x86@kernel.org, John Clemens , =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= List-ID: RnJvbTogUmFmYcWCIE1pxYJlY2tpIDxyYWZhbEBtaWxlY2tpLnBsPgoKSXQgbWF5IGhhcHBlbiBh bWRfdGhyZXNob2xkX2ludGVycnVwdCgpIGZpcmVzIGJlZm9yZSBiYW5rcyBnZXQgc2V0dXAgYXMK cGFydCBvZiB0aGUgdGhyZXNob2xkX2luaXRfZGV2aWNlKCkgY2FsbC4gU3VjaCBhIGNhc2UgcmVx dWlyZXMgYSBwcm9wZXIKY2hlY2sgdG8gYXZvaWQgTlVMTCBwb2ludGVyIGRlcmVmZXJlbmNlLgoK VGhpcyBwcm9ibGVtIGhhcyBiZWVuIG5vdGljZWQgb24gSFAgRWxpdGVCb29rIDc0NSBHNSAoUnl6 ZW4gMjUwMFUpIHdpdGgKQklPUyAxLjAzLjAxLiBJdCBkb2Vzbid0IGJvb3QgdW5sZXNzIG1jZSBp cyBkaXNhYmxlZCAoZS5nLiB3aXRoCiJtY2U9b2ZmIikuCgpUaGlzIGZpeGVzIGEgcmVncmVzc2lv biBpbnRyb2R1Y2VkIGluIGtlcm5lbCA0LjEwLiBJdCB3YXMgdGhlIGZpcnN0Cmtlcm5lbCByZWZl cmVuY2luZyAidGhyZXNob2xkX2JhbmtzIiB2YXJpYWJsZSBpbiB0aGUKYW1kX3RocmVzaG9sZF9p bnRlcnJ1cHQoKS4KClJlcG9ydGVkLWJ5OiBKb2huIENsZW1lbnMgPGNsZW1lakBnbWFpbC5jb20+ CkJ1Z3ppbGxhOiBodHRwczovL2J1Z3ppbGxhLmtlcm5lbC5vcmcvc2hvd19idWcuY2dpP2lkPTIw MTI5MQpGaXhlczogMTg4MDdkZGI3Zjg4ICgieDg2L21jZS9BTUQ6IFJlc2V0IFRocmVzaG9sZCBM aW1pdCBhZnRlciBsb2dnaW5nIGVycm9yIikKQ2M6IHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmcgIyB2 NC4xMCsKU2lnbmVkLW9mZi1ieTogUmFmYcWCIE1pxYJlY2tpIDxyYWZhbEBtaWxlY2tpLnBsPgot LS0KIGFyY2gveDg2L2tlcm5lbC9jcHUvbWNoZWNrL21jZV9hbWQuYyB8IDkgKysrKysrKystCiAx IGZpbGUgY2hhbmdlZCwgOCBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCgpkaWZmIC0tZ2l0 IGEvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlX2FtZC5jIGIvYXJjaC94ODYva2VybmVs L2NwdS9tY2hlY2svbWNlX2FtZC5jCmluZGV4IGRkMzNjMzU3NTQ4Zi4uMzc5ZjU0YWZjMjY2IDEw MDY0NAotLS0gYS9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2VfYW1kLmMKKysrIGIvYXJj aC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlX2FtZC5jCkBAIC05MzUsMTIgKzkzNSwxOSBAQCBz dGF0aWMgdm9pZCBhbWRfdGhyZXNob2xkX2ludGVycnVwdCh2b2lkKQogewogCXN0cnVjdCB0aHJl c2hvbGRfYmxvY2sgKmZpcnN0X2Jsb2NrID0gTlVMTCwgKmJsb2NrID0gTlVMTCwgKnRtcCA9IE5V TEw7CiAJdW5zaWduZWQgaW50IGJhbmssIGNwdSA9IHNtcF9wcm9jZXNzb3JfaWQoKTsKKwlzdHJ1 Y3QgdGhyZXNob2xkX2JhbmsgKipiYW5rczsKKworCWJhbmtzID0gcGVyX2NwdSh0aHJlc2hvbGRf YmFua3MsIGNwdSk7CisJaWYgKCFiYW5rcykgeworCQlwcl93YXJuKCJUaHJlc2hvbGQgaW50ZXJy dXB0IGZpcmVkIGJlZm9yZSBNQ0Ugc2V0dXBcbiIpOworCQlyZXR1cm47CisJfQogCiAJZm9yIChi YW5rID0gMDsgYmFuayA8IG1jYV9jZmcuYmFua3M7ICsrYmFuaykgewogCQlpZiAoIShwZXJfY3B1 KGJhbmtfbWFwLCBjcHUpICYgKDEgPDwgYmFuaykpKQogCQkJY29udGludWU7CiAKLQkJZmlyc3Rf YmxvY2sgPSBwZXJfY3B1KHRocmVzaG9sZF9iYW5rcywgY3B1KVtiYW5rXS0+YmxvY2tzOworCQlm aXJzdF9ibG9jayA9IGJhbmtzW2JhbmtdLT5ibG9ja3M7CiAJCWlmICghZmlyc3RfYmxvY2spCiAJ CQljb250aW51ZTsKIAo=