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: [RFC,v3,2/3] acpi: apei: Do not panic() on PCIe errors reported through GHES From: Alexandru Gagniuc Message-Id: <20180425203957.18224-3-mr.nuke.me@gmail.com> Date: Wed, 25 Apr 2018 15:39:50 -0500 To: linux-acpi@vger.kernel.org, linux-edac@vger.kernel.org Cc: Alexandru Gagniuc , "Rafael J. Wysocki" , Len Brown , Tony Luck , Borislav Petkov , Mauro Carvalho Chehab , Robert Moore , Erik Schmauss , Tyler Baicar , Will Deacon , James Morse , Shiju Jose , "Jonathan (Zhixiong) Zhang" , Dongjiu Geng , linux-kernel@vger.kernel.org, devel@acpica.org List-ID: VGhlIHBvbGljeSB3YXMgdG8gcGFuaWMoKSB3aGVuIEdIRVMgc2FpZCB0aGF0IGFuIGVycm9yIGlz ICJGYXRhbCIuClRoaXMgbG9naWMgaXMgd3JvbmcgZm9yIHNldmVyYWwgcmVhc29ucywgYXMgaXQg ZG9lc24ndCB0YWtlIGludG8KYWNjb3VudCB3aGF0IGNhdXNlZCB0aGUgZXJyb3IuCgpQQ0llIGZh dGFsIGVycm9ycyBpbmRpY2F0ZSB0aGF0IHRoZSBsaW5rIHRvIGEgZGV2aWNlIGlzIGVpdGhlcgp1 bnN0YWJsZSBvciB1bnVzYWJsZS4gVGhleSBkb24ndCBpbmRpY2F0ZSB0aGF0IHRoZSBtYWNoaW5l IGlzIG9uIGZpcmUsCmFuZCB0aGV5IGFyZSBub3Qgc2V2ZXJlIGVub3VnaCB0aGF0IHdlIG5lZWQg dG8gcGFuaWMoKS4gSW5zdGVhZCBvZgpyZWx5aW5nIG9uIGNyYWNrbW9ua2V5IGZpcm13YXJlLCBl dmFsdWF0ZSB0aGUgZXJyb3Igc2V2ZXJpdHkgYmFzZWQgb24Kd2hhdCBjYXVzZWQgdGhlIGVycm9y IChHSEVTIHN1YnNlY3Rpb25zKS4KClNpZ25lZC1vZmYtYnk6IEFsZXhhbmRydSBHYWduaXVjIDxt ci5udWtlLm1lQGdtYWlsLmNvbT4KLS0tCiBkcml2ZXJzL2FjcGkvYXBlaS9naGVzLmMgfCA0OCAr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKy0tLS0KIDEgZmlsZSBj aGFuZ2VkLCA0NCBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2Ry aXZlcnMvYWNwaS9hcGVpL2doZXMuYyBiL2RyaXZlcnMvYWNwaS9hcGVpL2doZXMuYwppbmRleCBm OWI1M2E2ZjU1ZjMuLjhjY2I5Y2MxMGZjOCAxMDA2NDQKLS0tIGEvZHJpdmVycy9hY3BpL2FwZWkv Z2hlcy5jCisrKyBiL2RyaXZlcnMvYWNwaS9hcGVpL2doZXMuYwpAQCAtNDI1LDggKzQyNSw3IEBA IHN0YXRpYyB2b2lkIGdoZXNfaGFuZGxlX21lbW9yeV9mYWlsdXJlKHN0cnVjdCBhY3BpX2hlc3Rf Z2VuZXJpY19kYXRhICpnZGF0YSwgaW50CiAgKiBHSEVTX1NFVl9SRUNPVkVSQUJMRSAtPiBBRVJf Tk9ORkFUQUwKICAqIEdIRVNfU0VWX1JFQ09WRVJBQkxFICYmIENQRVJfU0VDX1JFU0VUIC0+IEFF Ul9GQVRBTAogICogICAgIFRoZXNlIGJvdGggbmVlZCB0byBiZSByZXBvcnRlZCBhbmQgcmVjb3Zl cmVkIGZyb20gYnkgdGhlIEFFUiBkcml2ZXIuCi0gKiBHSEVTX1NFVl9QQU5JQyBkb2VzIG5vdCBt YWtlIGl0IHRvIHRoaXMgaGFuZGxpbmcgc2luY2UgdGhlIGtlcm5lbCBtdXN0Ci0gKiAgICAgcGFu aWMuCisgKiBHSEVTX1NFVl9QQU5JQyAtPiBBRVJfRkFUQUwKICAqLwogc3RhdGljIHZvaWQgZ2hl c19oYW5kbGVfYWVyKHN0cnVjdCBhY3BpX2hlc3RfZ2VuZXJpY19kYXRhICpnZGF0YSkKIHsKQEAg LTQ1OSw2ICs0NTgsNDYgQEAgc3RhdGljIHZvaWQgZ2hlc19oYW5kbGVfYWVyKHN0cnVjdCBhY3Bp X2hlc3RfZ2VuZXJpY19kYXRhICpnZGF0YSkKICNlbmRpZgogfQogCisvKiBQQ0llIGVycm9ycyBz aG91bGQgbm90IGNhdXNlIGEgcGFuaWMuICovCitzdGF0aWMgaW50IGdoZXNfc2VjX3BjaWVfc2V2 ZXJpdHkoc3RydWN0IGFjcGlfaGVzdF9nZW5lcmljX2RhdGEgKmdkYXRhKQoreworCXN0cnVjdCBj cGVyX3NlY19wY2llICpwY2llX2VyciA9IGFjcGlfaGVzdF9nZXRfcGF5bG9hZChnZGF0YSk7CisK KwlpZiAocGNpZV9lcnItPnZhbGlkYXRpb25fYml0cyAmIENQRVJfUENJRV9WQUxJRF9ERVZJQ0Vf SUQgJiYKKwkgICAgcGNpZV9lcnItPnZhbGlkYXRpb25fYml0cyAmIENQRVJfUENJRV9WQUxJRF9B RVJfSU5GTyAmJgorCSAgICBJU19FTkFCTEVEKENPTkZJR19BQ1BJX0FQRUlfUENJRUFFUikpCisJ CXJldHVybiBDUEVSX1NFVl9SRUNPVkVSQUJMRTsKKworCXJldHVybiBnaGVzX3NldmVyaXR5KGdk YXRhLT5lcnJvcl9zZXZlcml0eSk7Cit9CisvKgorICogVGhlIHNldmVyaXR5IGZpZWxkIGluIHRo ZSBzdGF0dXMgYmxvY2sgaXMgb2Z0ZW50aW1lcyBtb3JlIHNldmVyZSB0aGFuIGl0CisgKiBuZWVk cyB0byBiZS4gVGhpcyBtYWtlcyBpdCBhbiB1bnJlbGlhYmxlIG1ldHJpYyBmb3IgdGhlIHNldmVy aXR5LiBBIG1vcmUKKyAqIHJlbGlhYmxlIHdheSBpcyB0byBsb29rIGF0IGVhY2ggc3Vic2VjdGlv biBhbmQgY29ycmVsYXRlIGl0IHdpdGggaG93IHdlbGwKKyAqIHRoZSBlcnJvciBjYW4gYmUgaGFu ZGxlZC4KKyAqICAgLSBTRUNfUENJRTogQWxsIFBDSWUgZXJyb3JzIGNhbiBiZSBoYW5kbGVkIGJ5 IEFFUi4KKyAqLworc3RhdGljIGludCBnaGVzX2FjdHVhbF9zZXZlcml0eShzdHJ1Y3QgZ2hlcyAq Z2hlcykKK3sKKwlpbnQgd29yc3Rfc2V2LCBzZWNfc2V2OworCXN0cnVjdCBhY3BpX2hlc3RfZ2Vu ZXJpY19kYXRhICpnZGF0YTsKKwljb25zdCBndWlkX3QgKnNlY3Rpb25fdHlwZTsKKwljb25zdCBz dHJ1Y3QgYWNwaV9oZXN0X2dlbmVyaWNfc3RhdHVzICplc3RhdHVzID0gZ2hlcy0+ZXN0YXR1czsK KworCXdvcnN0X3NldiA9IEdIRVNfU0VWX05POworCWFwZWlfZXN0YXR1c19mb3JfZWFjaF9zZWN0 aW9uKGVzdGF0dXMsIGdkYXRhKSB7CisJCXNlY3Rpb25fdHlwZSA9IChndWlkX3QgKilnZGF0YS0+ c2VjdGlvbl90eXBlOworCQlzZWNfc2V2ID0gZ2hlc19zZXZlcml0eShnZGF0YS0+ZXJyb3Jfc2V2 ZXJpdHkpOworCisJCWlmIChndWlkX2VxdWFsKHNlY3Rpb25fdHlwZSwgJkNQRVJfU0VDX1BDSUUp KQorCQkJc2VjX3NldiA9IGdoZXNfc2VjX3BjaWVfc2V2ZXJpdHkoZ2RhdGEpOworCisJCXdvcnN0 X3NldiA9IG1heCh3b3JzdF9zZXYsIHNlY19zZXYpOworCX0KKworCXJldHVybiB3b3JzdF9zZXY7 Cit9CisKIHN0YXRpYyB2b2lkIGdoZXNfZG9fcHJvYyhzdHJ1Y3QgZ2hlcyAqZ2hlcywKIAkJCSBj b25zdCBzdHJ1Y3QgYWNwaV9oZXN0X2dlbmVyaWNfc3RhdHVzICplc3RhdHVzKQogewpAQCAtOTMy LDcgKzk3MSw3IEBAIHN0YXRpYyB2b2lkIF9fcHJvY2Vzc19lcnJvcihzdHJ1Y3QgZ2hlcyAqZ2hl cykKIHN0YXRpYyBpbnQgZ2hlc19ub3RpZnlfbm1pKHVuc2lnbmVkIGludCBjbWQsIHN0cnVjdCBw dF9yZWdzICpyZWdzKQogewogCXN0cnVjdCBnaGVzICpnaGVzOwotCWludCBzZXYsIHJldCA9IE5N SV9ET05FOworCWludCBzZXYsIGFzZXYsIHJldCA9IE5NSV9ET05FOwogCiAJaWYgKCFhdG9taWNf YWRkX3VubGVzcygmZ2hlc19pbl9ubWksIDEsIDEpKQogCQlyZXR1cm4gcmV0OwpAQCAtOTQ1LDgg Kzk4NCw5IEBAIHN0YXRpYyBpbnQgZ2hlc19ub3RpZnlfbm1pKHVuc2lnbmVkIGludCBjbWQsIHN0 cnVjdCBwdF9yZWdzICpyZWdzKQogCQkJcmV0ID0gTk1JX0hBTkRMRUQ7CiAJCX0KIAorCQlhc2V2 ID0gZ2hlc19hY3R1YWxfc2V2ZXJpdHkoZ2hlcyk7CiAJCXNldiA9IGdoZXNfc2V2ZXJpdHkoZ2hl cy0+ZXN0YXR1cy0+ZXJyb3Jfc2V2ZXJpdHkpOwotCQlpZiAoc2V2ID49IEdIRVNfU0VWX1BBTklD KSB7CisJCWlmICgoc2V2ID49IEdIRVNfU0VWX1BBTklDKSAmJiAoYXNldiA+PSBHSEVTX1NFVl9Q QU5JQykpIHsKIAkJCW9vcHNfYmVnaW4oKTsKIAkJCWdoZXNfcHJpbnRfcXVldWVkX2VzdGF0dXMo KTsKIAkJCV9fZ2hlc19wYW5pYyhnaGVzKTsK