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, EDAC/mce_amd: Save all aux registers on SMCA systems From: Borislav Petkov Message-Id: <20180417172102.GA3633@pd.tnic> Date: Tue, 17 Apr 2018 19:21:02 +0200 To: Yazen Ghannam Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, tony.luck@intel.com, x86@kernel.org List-ID: T24gTW9uLCBBcHIgMDIsIDIwMTggYXQgMDI6NTc6MDdQTSAtMDUwMCwgWWF6ZW4gR2hhbm5hbSB3 cm90ZToKPiBGcm9tOiBZYXplbiBHaGFubmFtIDx5YXplbi5naGFubmFtQGFtZC5jb20+Cj4gCj4g VGhlIEludGVsIFNETSBhbmQgQU1EIEFQTSBib3RoIHN0YXRlIHRoYXQgdGhlIGF1eGlsaWFyeSBN Q0EgcmVnaXN0ZXJzCj4gc2hvdWxkIGJlIHJlYWQgaWYgdGhlaXIgcmVzcGVjdGl2ZSB2YWxpZCBi aXRzIGFyZSBzZXQgaW4gTUNBX1NUQVRVUy4KPiAKPiBUaGUgUHJvY2Vzc29yIFByb2dyYW1taW5n IFJlZmVyZW5jZSBmb3IgQU1EIEZhbTE3aCBzeXN0ZW1zIGhhcyBhIG5ldwo+IHJlY29tbWVuZGF0 aW9uIHRoYXQgdGhlIGF1eGlsaWFyeSByZWdpc3RlcnMgc2hvdWxkIGJlIHNhdmVkCj4gdW5jb25k aXRpb25hbGx5LiBUaGlzIHJlY29tbWVuZGF0aW9uIGNhbiBiZSByZXRyb2FjdGl2ZWx5IGFwcGxp ZWQgdG8KPiBvbGRlciBBTUQgc3lzdGVtcy4gSG93ZXZlciwgd2Ugb25seSBuZWVkIHRvIGFwcGx5 IHRoaXMgdG8gU01DQSBzeXN0ZW1zCj4gdG8gYXZvaWQgbW9kaWZ5aW5nIGJlaGF2aW9yIG9uIG9s ZGVyIHN5c3RlbXMuCgpBcHBseWluZyB0aGUgbG9naWMgb2YgdGhhdCByZWNvbW1lbmRhdGlvbiBv biBvbGRlciBzeXN0ZW1zOiB3b3VsZG4ndCBpdApiZSBwcnVkZW50IHRvIHNhdmUgdGhlbSB0aGVy ZSB0b28sIGlmIGl0IGhlbHBzIGRlYnVnZ2luZyBhbiBNQ0U/Cgo+IERlZmluZSBhIHNlcGFyYXRl IGZ1bmN0aW9uIHRvIHNhdmUgYWxsIGF1eGlsaWFyeSByZWdpc3RlcnMgb24gU01DQQo+IHN5c3Rl bXMuIENhbGwgdGhpcyBmdW5jdGlvbiBmcm9tIGJvdGggdGhlIE1DRSBoYW5kbGVycyBhbmQgdGhl IEFNRCBMVlQKPiBpbnRlcnJ1cHQgaGFuZGxlcnMgc28gdGhhdCB3ZSBkb24ndCBkdXBsaWNhdGUg Y29kZS4KPiAKPiBQcmludCBhbGwgYXV4aWxpYXJ5IHJlZ2lzdGVycyBpbiBFREFDL21jZV9hbWQu IERvbid0IHJlc3RyaWN0IHRoaXMgdG8KPiBTTUNBIHN5c3RlbXMgaW4gb3JkZXIgdG8gc2F2ZSBh IGNvbmRpdGlvbmFsIGFuZCBrZWVwIHRoZSBmb3JtYXQgc2ltaWxhcgo+IGJldHdlZW4gU01DQSBh bmQgbm9uLVNNQ0Egc3lzdGVtcy4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBZYXplbiBHaGFubmFtIDx5 YXplbi5naGFubmFtQGFtZC5jb20+CgouLi4KCj4gZGlmZiAtLWdpdCBhL2FyY2gveDg2L2tlcm5l bC9jcHUvbWNoZWNrL21jZV9hbWQuYyBiL2FyY2gveDg2L2tlcm5lbC9jcHUvbWNoZWNrL21jZV9h bWQuYwo+IGluZGV4IGY3NjY2ZWVmNGE4Ny4uYjAwZDVmZmYxODQ4IDEwMDY0NAo+IC0tLSBhL2Fy Y2gveDg2L2tlcm5lbC9jcHUvbWNoZWNrL21jZV9hbWQuYwo+ICsrKyBiL2FyY2gveDg2L2tlcm5l bC9jcHUvbWNoZWNrL21jZV9hbWQuYwo+IEBAIC0yNDQsNiArMjQ0LDQ3IEBAIHN0YXRpYyB2b2lk IHNtY2FfY29uZmlndXJlKHVuc2lnbmVkIGludCBiYW5rLCB1bnNpZ25lZCBpbnQgY3B1KQo+ICAJ fQo+ICB9Cj4gIAo+ICsKPiArc3RhdGljIGJvb2wgX3NtY2FfcmVhZF9hdXgoc3RydWN0IG1jZSAq bSwgaW50IGJhbmssIGJvb2wgcmVhZF9hZGRyKQo+ICt7Cj4gKwlpZiAoIW1jZV9mbGFncy5zbWNh KQo+ICsJCXJldHVybiBmYWxzZTsKPiArCj4gKwlyZG1zcmwoTVNSX0FNRDY0X1NNQ0FfTUN4X0lQ SUQoYmFuayksIG0tPmlwaWQpOwo+ICsJcmRtc3JsKE1TUl9BTUQ2NF9TTUNBX01DeF9TWU5EKGJh bmspLCBtLT5zeW5kKTsKPiArCj4gKwkvKgo+ICsJICogV2Ugc2hvdWxkIGFscmVhZHkgaGF2ZSBh IHZhbHVlIGlmIHdlJ3JlIGNvbWluZyBmcm9tIHRoZSBUaHJlc2hvbGQgTFZUCj4gKwkgKiBpbnRl cnJ1cHQgaGFuZGxlci4gT3RoZXJ3aXNlLCByZWFkIGl0IG5vdy4KPiArCSAqLwo+ICsJaWYgKCFt LT5taXNjKQo+ICsJCXJkbXNybChtc3Jfb3BzLm1pc2MoYmFuayksIG0tPm1pc2MpOwo+ICsKPiAr CS8qCj4gKwkgKiBSZWFkIE1DQV9BRERSIGlmIHdlIGRvbid0IGhhdmUgaXQgYWxyZWFkeS4gV2Ug c2hvdWxkIGFscmVhZHkgaGF2ZSBpdAo+ICsJICogaWYgd2UncmUgY29taW5nIGZyb20gdGhlIGlu dGVycnVwdCBoYW5kbGVycy4KPiArCSAqLwo+ICsJaWYgKHJlYWRfYWRkcikKCldoeSBub3QKCglp ZiAoIW0tPmFkZHIpCgo/CgpBbmQgeWVhaCwgaWYgaXQgaGFzIGJlZW4gcmVhZCB0byAwIGFscmVh ZHksIHJlYWRpbmcgaXQgYWdhaW4gd29uJ3QKY2hhbmdlIGFueXRoaW5nLgoKQW5kIHRoaW5raW5n IGFib3V0IGl0IG1vcmUsIHlvdSBkb24ndCByZWFsbHkgbmVlZCB0aG9zZSBpZi10ZXN0cywgSSdk CnNheS4gU28gd2hhdCwgeW91J2xsIHJlYWQgb25lIG9yIHR3byBNU1JzIG9uY2UgbW9yZS4gSXQg aXMgbm90IHN1Y2ggYQpob3QgcGF0aCB0aGF0IHdlIGNhbid0IHN0b21hY2ggdGhlIHBlcmYgcGVu YWx0eSBvZiByZWFkaW5nIHRoZSBNU1JzLgoKPiArCQlyZG1zcmwobXNyX29wcy5hZGRyKGJhbmsp LCBtLT5hZGRyKTsKPiArCj4gKwkvKgo+ICsJICogRXh0cmFjdCBbNTU6PGxzYj5dIHdoZXJlIGxz YiBpcyB0aGUgbGVhc3Qgc2lnbmlmaWNhbnQKPiArCSAqICp2YWxpZCogYml0IG9mIHRoZSBhZGRy ZXNzIGJpdHMuCj4gKwkgKi8KPiArCWlmIChtLT5hZGRyKSB7CgpBbmQgdGhhdCB0ZXN0IGlzIHBy b2JhYmx5IG5vdCBuZWVkZWQgZWl0aGVyOiBpZiBtLT5hZGRyIGlzIDAsIHRoZQpiZWxvdyB3b3Vs ZCBiZSAwIGFueXdheS4KCj4gKwkJdTggbHNiID0gKG0tPmFkZHIgPj4gNTYpICYgMHgzZjsKPiAr Cj4gKwkJbS0+YWRkciAmPSBHRU5NQVNLX1VMTCg1NSwgbHNiKTsKPiArCX0KPiArCj4gKwlyZXR1 cm4gdHJ1ZTsKPiArfQoKSU9XLCB0aG9zZSB0ZXN0cyBhcmUgcHJvYmFibHkgb2sgYnV0IGdldHRp bmcgcmlkIG9mIHRoZW0gd291bGQgbWFrZSB0aGUKY29kZSBtb3JlIHJlYWRhYmxlIGFuZCBJIHRo aW5rIHdlIGNhbiBhZmZvcmQgdGhhdCBoZXJlLgoKVGh4Lgo=