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: [4.9,20/21] x86/mce: Make the MCE notifier a blocking one From: Greg Kroah-Hartman Message-Id: <20170425150828.367988387@linuxfoundation.org> Date: Tue, 25 Apr 2017 16:09:15 +0100 To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ross Zwisler , Vishal Verma , Tony Luck , Dan Williams , linux-edac , x86-ml , Borislav Petkov , Thomas Gleixner List-ID: NC45LXN0YWJsZSByZXZpZXcgcGF0Y2guICBJZiBhbnlvbmUgaGFzIGFueSBvYmplY3Rpb25zLCBw bGVhc2UgbGV0IG1lIGtub3cuCgotLS0tLS0tLS0tLS0tLS0tLS0KCkZyb206IFZpc2hhbCBWZXJt YSA8dmlzaGFsLmwudmVybWFAaW50ZWwuY29tPgoKY29tbWl0IDBkYzljNjM5ZTY1NTNlMzljMTNi MmMwZDU0YzhhMWIwOThjYjk1ZTIgdXBzdHJlYW0uCgpUaGUgTkZJVCBNQ0UgaGFuZGxlciBjYWxs YmFjayAoZm9yIGhhbmRsaW5nIG1lZGlhIGVycm9ycyBvbiBOVkRJTU1zKQp0YWtlcyBhIG11dGV4 IHRvIGFkZCB0aGUgbG9jYXRpb24gb2YgYSBtZW1vcnkgZXJyb3IgdG8gYSBsaXN0LiBCdXQgc2lu Y2UKdGhlIG5vdGlmaWVyIGNhbGwgY2hhaW4gZm9yIG1hY2hpbmUgY2hlY2tzICh4ODZfbWNlX2Rl Y29kZXJfY2hhaW4pIGlzCmF0b21pYywgd2UgZ2V0IGEgbG9ja2RlcCBzcGxhdCBsaWtlOgoKICBC VUc6IHNsZWVwaW5nIGZ1bmN0aW9uIGNhbGxlZCBmcm9tIGludmFsaWQgY29udGV4dCBhdCBrZXJu ZWwvbG9ja2luZy9tdXRleC5jOjYyMAogIGluX2F0b21pYygpOiAxLCBpcnFzX2Rpc2FibGVkKCk6 IDAsIHBpZDogNCwgbmFtZToga3dvcmtlci8wOjAKICBbLi5dCiAgQ2FsbCBUcmFjZToKICAgZHVt cF9zdGFjawogICBfX19taWdodF9zbGVlcAogICBfX21pZ2h0X3NsZWVwCiAgIG11dGV4X2xvY2tf bmVzdGVkCiAgID8gX19sb2NrX2FjcXVpcmUKICAgbmZpdF9oYW5kbGVfbWNlCiAgIG5vdGlmaWVy X2NhbGxfY2hhaW4KICAgYXRvbWljX25vdGlmaWVyX2NhbGxfY2hhaW4KICAgPyBhdG9taWNfbm90 aWZpZXJfY2FsbF9jaGFpbgogICBtY2VfZ2VuX3Bvb2xfcHJvY2VzcwoKQ29udmVydCB0aGUgbm90 aWZpZXIgdG8gYSBibG9ja2luZyBvbmUgd2hpY2ggZ2V0cyB0byBydW4gb25seSBpbiBwcm9jZXNz CmNvbnRleHQuCgpCb3JpczogcmVtb3ZlIHRoZSBub3RpZmllciBjYWxsIGluIGF0b21pYyBjb250 ZXh0IGluIHByaW50X21jZSgpLiBGb3IKbm93LCBsZXQncyBwcmludCB0aGUgTUNFIG9uIHRoZSBh dG9taWMgcGF0aCBzbyB0aGF0IHdlIGNhbiBtYWtlIHN1cmUKdGhleSBnbyBvdXQgYW5kIGdldCBs b2dnZWQgYXQgbGVhc3QuCgpGaXhlczogNjgzOWE2ZDk2ZjRlICgibmZpdDogZG8gYW4gQVJTIHNj cnViIG9uIGhpdHRpbmcgYSBsYXRlbnQgbWVkaWEgZXJyb3IiKQpSZXBvcnRlZC1ieTogUm9zcyBa d2lzbGVyIDxyb3NzLnp3aXNsZXJAbGludXguaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBWaXNo YWwgVmVybWEgPHZpc2hhbC5sLnZlcm1hQGludGVsLmNvbT4KQWNrZWQtYnk6IFRvbnkgTHVjayA8 dG9ueS5sdWNrQGludGVsLmNvbT4KQ2M6IERhbiBXaWxsaWFtcyA8ZGFuLmoud2lsbGlhbXNAaW50 ZWwuY29tPgpDYzogbGludXgtZWRhYyA8bGludXgtZWRhY0B2Z2VyLmtlcm5lbC5vcmc+CkNjOiB4 ODYtbWwgPHg4NkBrZXJuZWwub3JnPgpMaW5rOiBodHRwOi8vbGttbC5rZXJuZWwub3JnL3IvMjAx NzA0MTEyMjQ0NTcuMjQ3NzctMS12aXNoYWwubC52ZXJtYUBpbnRlbC5jb20KU2lnbmVkLW9mZi1i eTogQm9yaXNsYXYgUGV0a292IDxicEBzdXNlLmRlPgpTaWduZWQtb2ZmLWJ5OiBUaG9tYXMgR2xl aXhuZXIgPHRnbHhAbGludXRyb25peC5kZT4KU2lnbmVkLW9mZi1ieTogR3JlZyBLcm9haC1IYXJ0 bWFuIDxncmVna2hAbGludXhmb3VuZGF0aW9uLm9yZz4KLS0tCiBhcmNoL3g4Ni9rZXJuZWwvY3B1 L21jaGVjay9tY2UtZ2VucG9vbC5jICB8ICAgIDIgKy0KIGFyY2gveDg2L2tlcm5lbC9jcHUvbWNo ZWNrL21jZS1pbnRlcm5hbC5oIHwgICAgMiArLQogYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2sv bWNlLmMgICAgICAgICAgfCAgIDE2ICsrKy0tLS0tLS0tLS0tLS0KIDMgZmlsZXMgY2hhbmdlZCwg NSBpbnNlcnRpb25zKCspLCAxNSBkZWxldGlvbnMoLSkKCgoKLS0KVG8gdW5zdWJzY3JpYmUgZnJv bSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxpbmUgInVuc3Vic2NyaWJlIGxpbnV4LWVkYWMiIGluCnRo ZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9Admdlci5rZXJuZWwub3JnCk1vcmUgbWFq b3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5lbC5vcmcvbWFqb3Jkb21vLWluZm8uaHRt bAoKLS0tIGEvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLWdlbnBvb2wuYworKysgYi9h cmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2UtZ2VucG9vbC5jCkBAIC04NSw3ICs4NSw3IEBA IHZvaWQgbWNlX2dlbl9wb29sX3Byb2Nlc3Modm9pZCkKIAloZWFkID0gbGxpc3RfcmV2ZXJzZV9v cmRlcihoZWFkKTsKIAlsbGlzdF9mb3JfZWFjaF9lbnRyeV9zYWZlKG5vZGUsIHRtcCwgaGVhZCwg bGxub2RlKSB7CiAJCW1jZSA9ICZub2RlLT5tY2U7Ci0JCWF0b21pY19ub3RpZmllcl9jYWxsX2No YWluKCZ4ODZfbWNlX2RlY29kZXJfY2hhaW4sIDAsIG1jZSk7CisJCWJsb2NraW5nX25vdGlmaWVy X2NhbGxfY2hhaW4oJng4Nl9tY2VfZGVjb2Rlcl9jaGFpbiwgMCwgbWNlKTsKIAkJZ2VuX3Bvb2xf ZnJlZShtY2VfZXZ0X3Bvb2wsICh1bnNpZ25lZCBsb25nKW5vZGUsIHNpemVvZigqbm9kZSkpOwog CX0KIH0KLS0tIGEvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLWludGVybmFsLmgKKysr IGIvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLWludGVybmFsLmgKQEAgLTEzLDcgKzEz LDcgQEAgZW51bSBzZXZlcml0eV9sZXZlbCB7CiAJTUNFX1BBTklDX1NFVkVSSVRZLAogfTsKIAot ZXh0ZXJuIHN0cnVjdCBhdG9taWNfbm90aWZpZXJfaGVhZCB4ODZfbWNlX2RlY29kZXJfY2hhaW47 CitleHRlcm4gc3RydWN0IGJsb2NraW5nX25vdGlmaWVyX2hlYWQgeDg2X21jZV9kZWNvZGVyX2No YWluOwogCiAjZGVmaW5lIEFUVFJfTEVOCQkxNgogI2RlZmluZSBJTklUSUFMX0NIRUNLX0lOVEVS VkFMCTUgKiA2MCAvKiA1IG1pbnV0ZXMgKi8KLS0tIGEvYXJjaC94ODYva2VybmVsL2NwdS9tY2hl Y2svbWNlLmMKKysrIGIvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLmMKQEAgLTEyMCw3 ICsxMjAsNyBAQCBzdGF0aWMgdm9pZCAoKnF1aXJrX25vX3dheV9vdXQpKGludCBiYW5rCiAgKiBD UFUvY2hpcHNldCBzcGVjaWZpYyBFREFDIGNvZGUgY2FuIHJlZ2lzdGVyIGEgbm90aWZpZXIgY2Fs bCBoZXJlIHRvIHByaW50CiAgKiBNQ0UgZXJyb3JzIGluIGEgaHVtYW4tcmVhZGFibGUgZm9ybS4K ICAqLwotQVRPTUlDX05PVElGSUVSX0hFQUQoeDg2X21jZV9kZWNvZGVyX2NoYWluKTsKK0JMT0NL SU5HX05PVElGSUVSX0hFQUQoeDg2X21jZV9kZWNvZGVyX2NoYWluKTsKIAogLyogRG8gaW5pdGlh bCBpbml0aWFsaXphdGlvbiBvZiBhIHN0cnVjdCBtY2UgKi8KIHZvaWQgbWNlX3NldHVwKHN0cnVj dCBtY2UgKm0pCkBAIC0yMTMsMTMgKzIxMywxMyBAQCB2b2lkIG1jZV9yZWdpc3Rlcl9kZWNvZGVf Y2hhaW4oc3RydWN0IG5vCiAJaWYgKG5iICE9ICZtY2Vfc3Jhb19uYiAmJiBuYi0+cHJpb3JpdHkg PT0gSU5UX01BWCkKIAkJbmItPnByaW9yaXR5IC09IDE7CiAKLQlhdG9taWNfbm90aWZpZXJfY2hh aW5fcmVnaXN0ZXIoJng4Nl9tY2VfZGVjb2Rlcl9jaGFpbiwgbmIpOworCWJsb2NraW5nX25vdGlm aWVyX2NoYWluX3JlZ2lzdGVyKCZ4ODZfbWNlX2RlY29kZXJfY2hhaW4sIG5iKTsKIH0KIEVYUE9S VF9TWU1CT0xfR1BMKG1jZV9yZWdpc3Rlcl9kZWNvZGVfY2hhaW4pOwogCiB2b2lkIG1jZV91bnJl Z2lzdGVyX2RlY29kZV9jaGFpbihzdHJ1Y3Qgbm90aWZpZXJfYmxvY2sgKm5iKQogewotCWF0b21p Y19ub3RpZmllcl9jaGFpbl91bnJlZ2lzdGVyKCZ4ODZfbWNlX2RlY29kZXJfY2hhaW4sIG5iKTsK KwlibG9ja2luZ19ub3RpZmllcl9jaGFpbl91bnJlZ2lzdGVyKCZ4ODZfbWNlX2RlY29kZXJfY2hh aW4sIG5iKTsKIH0KIEVYUE9SVF9TWU1CT0xfR1BMKG1jZV91bnJlZ2lzdGVyX2RlY29kZV9jaGFp bik7CiAKQEAgLTI3Miw4ICsyNzIsNiBAQCBzdHJ1Y3QgbWNhX21zcl9yZWdzIG1zcl9vcHMgPSB7 CiAKIHN0YXRpYyB2b2lkIHByaW50X21jZShzdHJ1Y3QgbWNlICptKQogewotCWludCByZXQgPSAw OwotCiAJcHJfZW1lcmcoSFdfRVJSICJDUFUgJWQ6IE1hY2hpbmUgQ2hlY2sgRXhjZXB0aW9uOiAl THggQmFuayAlZDogJTAxNkx4XG4iLAogCSAgICAgICBtLT5leHRjcHUsIG0tPm1jZ3N0YXR1cywg bS0+YmFuaywgbS0+c3RhdHVzKTsKIApAQCAtMzA5LDE0ICszMDcsNiBAQCBzdGF0aWMgdm9pZCBw cmludF9tY2Uoc3RydWN0IG1jZSAqbSkKIAkJbS0+Y3B1dmVuZG9yLCBtLT5jcHVpZCwgbS0+dGlt ZSwgbS0+c29ja2V0aWQsIG0tPmFwaWNpZCwKIAkJY3B1X2RhdGEobS0+ZXh0Y3B1KS5taWNyb2Nv ZGUpOwogCi0JLyoKLQkgKiBQcmludCBvdXQgaHVtYW4tcmVhZGFibGUgZGV0YWlscyBhYm91dCB0 aGUgTUNFIGVycm9yLAotCSAqIChpZiB0aGUgQ1BVIGhhcyBhbiBpbXBsZW1lbnRhdGlvbiBmb3Ig dGhhdCkKLQkgKi8KLQlyZXQgPSBhdG9taWNfbm90aWZpZXJfY2FsbF9jaGFpbigmeDg2X21jZV9k ZWNvZGVyX2NoYWluLCAwLCBtKTsKLQlpZiAocmV0ID09IE5PVElGWV9TVE9QKQotCQlyZXR1cm47 Ci0KIAlwcl9lbWVyZ19yYXRlbGltaXRlZChIV19FUlIgIlJ1biB0aGUgYWJvdmUgdGhyb3VnaCAn bWNlbG9nIC0tYXNjaWknXG4iKTsKIH0KIAo=