From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH] x86/spec-ctrl: Fix the parsing of xpti= on fixed Intel hardware Date: Mon, 23 Jul 2018 14:48:02 +0100 Message-ID: <1532353682-28335-1-git-send-email-andrew.cooper3@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Xen-devel Cc: Juergen Gross , Sergey Dyasli , Wei Liu , Andrew Cooper , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= List-Id: xen-devel@lists.xenproject.org VGhlIGNhbGxzIHRvIHhwdGlfaW5pdF9kZWZhdWx0KCkgaW4gcGFyc2VfeHB0aSgpIGFyZSBidWdn eS4gIFRoZSBDUFVJRCBkYXRhCmhhc24ndCBiZWVuIGZldGNoZWQgdGhhdCBlYXJseSwgYW5kIGJv b3RfY3B1X2hhcyhYODZfRkVBVFVSRV9BUkNIX0NBUFMpIHdpbGwKYWx3YXlzIGV2YWx1YXRlIGZh bHNlLgoKQXMgYSByZXN1bHQsIHRoZSBkZWZhdWx0IGNhc2Ugd29uJ3QgZGlzYWJsZSBYUFRJIG9u IEludGVsIGhhcmR3YXJlIHdoaWNoCmFkdmVydGlzZXMgQVJDSF9DQVBBQklMSVRJRVNfUkRDTF9O Ty4KClNpbXBsaWZ5IHBhcnNlX3hwdGkoKSB0byBzb2xlbHkgdGhlIHNldHRpbmcgb2Ygb3B0X3hw dGkgYWNjb3JkaW5nIHRvIHRoZQpwYXNzZWQgc3RyaW5nLCBhbmQgaGF2ZSBpbml0X3NwZWN1bGF0 aW9uX21pdGlnYXRpb25zKCkgY2FsbAp4cHRpX2luaXRfZGVmYXVsdCgpIGlmIGFwcHJvcGlhdGUu ICBEcm9wIHRoZSBmb3JjZSBwYXJhbWV0ZXIsIGFuZCBwYXNzIGNhcHMKaW5zdGVhZCwgdG8gYXZv aWQgcmVkdW5kYW50IHJlLXJlYWRpbmcgb2YgTVNSX0FSQ0hfQ0FQUy4KClNpZ25lZC1vZmYtYnk6 IEFuZHJldyBDb29wZXIgPGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+Ci0tLQpDQzogSmFuIEJl dWxpY2ggPEpCZXVsaWNoQHN1c2UuY29tPgpDQzogSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2Uu Y29tPgpDQzogV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQ0M6IFJvZ2VyIFBhdSBNb25u w6kgPHJvZ2VyLnBhdUBjaXRyaXguY29tPgpDQzogU2VyZ2V5IER5YXNsaSA8c2VyZ2V5LmR5YXNs aUBjaXRyaXguY29tPgotLS0KIHhlbi9hcmNoL3g4Ni9zcGVjX2N0cmwuYyB8IDE3ICsrKysrLS0t LS0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgNSBpbnNlcnRpb25zKCspLCAxMiBkZWxldGlvbnMo LSkKCmRpZmYgLS1naXQgYS94ZW4vYXJjaC94ODYvc3BlY19jdHJsLmMgYi94ZW4vYXJjaC94ODYv c3BlY19jdHJsLmMKaW5kZXggNzNkYzcxNy4uMzJhNGVhNiAxMDA2NDQKLS0tIGEveGVuL2FyY2gv eDg2L3NwZWNfY3RybC5jCisrKyBiL3hlbi9hcmNoL3g4Ni9zcGVjX2N0cmwuYwpAQCAtNDIzLDE3 ICs0MjMsMTAgQEAgc3RhdGljIGJvb2wgX19pbml0IHNob3VsZF91c2VfZWFnZXJfZnB1KHZvaWQp CiAjZGVmaW5lIE9QVF9YUFRJX0RFRkFVTFQgIDB4ZmYKIHVpbnQ4X3QgX19yZWFkX21vc3RseSBv cHRfeHB0aSA9IE9QVF9YUFRJX0RFRkFVTFQ7CiAKLXN0YXRpYyBfX2luaXQgdm9pZCB4cHRpX2lu aXRfZGVmYXVsdChib29sIGZvcmNlKQorc3RhdGljIF9faW5pdCB2b2lkIHhwdGlfaW5pdF9kZWZh dWx0KHVpbnQ2NF90IGNhcHMpCiB7Ci0gICAgdWludDY0X3QgY2FwcyA9IDA7Ci0KLSAgICBpZiAo ICFmb3JjZSAmJiAob3B0X3hwdGkgIT0gT1BUX1hQVElfREVGQVVMVCkgKQotICAgICAgICByZXR1 cm47Ci0KICAgICBpZiAoIGJvb3RfY3B1X2RhdGEueDg2X3ZlbmRvciA9PSBYODZfVkVORE9SX0FN RCApCiAgICAgICAgIGNhcHMgPSBBUkNIX0NBUEFCSUxJVElFU19SRENMX05POwotICAgIGVsc2Ug aWYgKCBib290X2NwdV9oYXMoWDg2X0ZFQVRVUkVfQVJDSF9DQVBTKSApCi0gICAgICAgIHJkbXNy bChNU1JfQVJDSF9DQVBBQklMSVRJRVMsIGNhcHMpOwogCiAgICAgaWYgKCBjYXBzICYgQVJDSF9D QVBBQklMSVRJRVNfUkRDTF9OTyApCiAgICAgICAgIG9wdF94cHRpID0gMDsKQEAgLTQ0Niw4ICs0 MzksNiBAQCBzdGF0aWMgX19pbml0IGludCBwYXJzZV94cHRpKGNvbnN0IGNoYXIgKnMpCiAgICAg Y29uc3QgY2hhciAqc3M7CiAgICAgaW50IHZhbCwgcmMgPSAwOwogCi0gICAgeHB0aV9pbml0X2Rl ZmF1bHQoZmFsc2UpOwotCiAgICAgZG8gewogICAgICAgICBzcyA9IHN0cmNocihzLCAnLCcpOwog ICAgICAgICBpZiAoICFzcyApCkBAIC00NjUsNyArNDU2LDcgQEAgc3RhdGljIF9faW5pdCBpbnQg cGFyc2VfeHB0aShjb25zdCBjaGFyICpzKQogCiAgICAgICAgIGRlZmF1bHQ6CiAgICAgICAgICAg ICBpZiAoICFzdHJjbXAocywgImRlZmF1bHQiKSApCi0gICAgICAgICAgICAgICAgeHB0aV9pbml0 X2RlZmF1bHQodHJ1ZSk7CisgICAgICAgICAgICAgICAgb3B0X3hwdGkgPSBPUFRfWFBUSV9ERUZB VUxUOwogICAgICAgICAgICAgZWxzZSBpZiAoICh2YWwgPSBwYXJzZV9ib29sZWFuKCJkb20wIiwg cywgc3MpKSA+PSAwICkKICAgICAgICAgICAgICAgICBvcHRfeHB0aSA9IChvcHRfeHB0aSAmIH5P UFRfWFBUSV9ET00wKSB8CiAgICAgICAgICAgICAgICAgICAgICAgICAgICAodmFsID8gT1BUX1hQ VElfRE9NMCA6IDApOwpAQCAtNjI3LDcgKzYxOCw5IEBAIHZvaWQgX19pbml0IGluaXRfc3BlY3Vs YXRpb25fbWl0aWdhdGlvbnModm9pZCkKICAgICBpZiAoIGRlZmF1bHRfeGVuX3NwZWNfY3RybCAp CiAgICAgICAgIHNldHVwX2ZvcmNlX2NwdV9jYXAoWDg2X0ZFQVRVUkVfU0NfTVNSX0lETEUpOwog Ci0gICAgeHB0aV9pbml0X2RlZmF1bHQoZmFsc2UpOworICAgIGlmICggb3B0X3hwdGkgPT0gT1BU X1hQVElfREVGQVVMVCApCisgICAgICAgIHhwdGlfaW5pdF9kZWZhdWx0KGNhcHMpOworCiAgICAg aWYgKCBvcHRfeHB0aSA9PSAwICkKICAgICAgICAgc2V0dXBfZm9yY2VfY3B1X2NhcChYODZfRkVB VFVSRV9OT19YUFRJKTsKICAgICBlbHNlCi0tIAoyLjEuNAoKCl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRl dmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFp bG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=