From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH for-4.10] x86/hvm: Don't corrupt the HVM context stream when writing the MSR record Date: Thu, 16 Nov 2017 22:45:16 +0000 Message-ID: <1510872316-13762-1-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.xen.org Sender: "Xen-devel" To: Xen-devel Cc: Andrew Cooper , Julien Grall , Wei Liu , Jan Beulich List-Id: xen-devel@lists.xenproject.org RXZlciBzaW5jZSBpdCB3YXMgaW50cm9kdWNlZCBpbiBjL3MgYmQxZjBiNDVmZiwgaHZtX3NhdmVf Y3B1X21zcnMoKSBoYXMgaGFkIGEKYnVnIHdoZXJlYnkgaXQgY29ycnVwdHMgdGhlIEhWTSBjb250 ZXh0IHN0cmVhbSBpZiBzb21lLCBidXQgZmV3ZXIgdGhhbiB0aGUKbWF4aW11bSBudW1iZXIgb2Yg TVNScyBhcmUgd3JpdHRlbi4KCl9odm1faW5pdF9lbnRyeSgpIGNyZWF0ZXMgYW4gaHZtX3NhdmVf ZGVzY3JpcHRvciB3aXRoIGxlbmd0aCBmb3IKbXNyX2NvdW50X21heCwgYnV0IGluIHRoZSBjYXNl IHRoYXQgd2Ugd3JpdGUgZmV3ZXIgdGhhbiBtYXgsIGgtPmN1ciBvbmx5IG1vdmVzCmZvcndhcmQg YnkgdGhlIGFtb3VudCBvZiBzcGFjZSB1c2VkLCBjYXVzaW5nIHRoZSBzdWJzZXF1ZW50Cmh2bV9z YXZlX2Rlc2NyaXB0b3IgdG8gYmUgd3JpdHRlbiB3aXRoaW4gdGhlIGJvdW5kcyBvZiB0aGUgcHJl dmlvdXMgb25lLgoKVG8gcmVzb2x2ZSB0aGlzLCByZWR1Y2UgdGhlIGxlbmd0aCByZXBvcnRlZCBi eSB0aGUgZGVzY3JpcHRvciB0byBtYXRjaCB0aGUKYWN0dWFsIG51bWJlciBvZiBieXRlcyB1c2Vk LgoKQSB0eXBpY2FsIGZhaWx1cmUgb24gdGhlIGRlc3RpbmF0aW9uIHNpZGUgbG9va3MgbGlrZToK CiAgICAoWEVOKSBIVk00IHJlc3RvcmU6IENQVV9NU1IgMAogICAgKFhFTikgSFZNNC4wIHJlc3Rv cmU6IG5vdCBlbm91Z2ggZGF0YSBsZWZ0IHRvIHJlYWQgNTYgTVNSIGJ5dGVzCiAgICAoWEVOKSBI Vk00IHJlc3RvcmU6IGZhaWxlZCB0byBsb2FkIGVudHJ5IDIwLzAKClNpZ25lZC1vZmYtYnk6IEFu ZHJldyBDb29wZXIgPGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+Ci0tLQpDQzogSmFuIEJldWxp Y2ggPEpCZXVsaWNoQHN1c2UuY29tPgpDQzogV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4K Q0M6IEp1bGllbiBHcmFsbCA8anVsaWVuLmdyYWxsQGFybS5jb20+CgpUaGlzIHdhbnRzIGJhY2tw b3J0aW5nIHRvIGFsbCBzdGFibGUgdHJlZXMsIHNvIHNob3VsZCBhbHNvIGJlIGNvbnNpZGVyZWQg Zm9yCmluY2x1c2lvbiBpbnRvIDQuMTAgYXQgdGhpcyBwb2ludC4KLS0tCiB4ZW4vYXJjaC94ODYv aHZtL2h2bS5jIHwgNiArKysrKysKIDEgZmlsZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKykKCmRp ZmYgLS1naXQgYS94ZW4vYXJjaC94ODYvaHZtL2h2bS5jIGIveGVuL2FyY2gveDg2L2h2bS9odm0u YwppbmRleCAwYWY0OThhLi5jNWU4NDY3IDEwMDY0NAotLS0gYS94ZW4vYXJjaC94ODYvaHZtL2h2 bS5jCisrKyBiL3hlbi9hcmNoL3g4Ni9odm0vaHZtLmMKQEAgLTEzMzAsNiArMTMzMCw3IEBAIHN0 YXRpYyBpbnQgaHZtX3NhdmVfY3B1X21zcnMoc3RydWN0IGRvbWFpbiAqZCwgaHZtX2RvbWFpbl9j b250ZXh0X3QgKmgpCiAKICAgICBmb3JfZWFjaF92Y3B1ICggZCwgdiApCiAgICAgeworICAgICAg ICBzdHJ1Y3QgaHZtX3NhdmVfZGVzY3JpcHRvciAqZCA9IF9wKCZoLT5kYXRhW2gtPmN1cl0pOwog ICAgICAgICBzdHJ1Y3QgaHZtX21zciAqY3R4dDsKICAgICAgICAgdW5zaWduZWQgaW50IGk7CiAK QEAgLTEzNDgsOCArMTM0OSwxMyBAQCBzdGF0aWMgaW50IGh2bV9zYXZlX2NwdV9tc3JzKHN0cnVj dCBkb21haW4gKmQsIGh2bV9kb21haW5fY29udGV4dF90ICpoKQogICAgICAgICAgICAgY3R4dC0+ bXNyW2ldLl9yc3ZkID0gMDsKIAogICAgICAgICBpZiAoIGN0eHQtPmNvdW50ICkKKyAgICAgICAg eworICAgICAgICAgICAgLyogUmV3cml0ZSBsZW5ndGggdG8gaW5kaWNhdGUgaG93IG11Y2ggc3Bh Y2Ugd2UgYWN0dWFsbHkgdXNlZC4gKi8KKyAgICAgICAgICAgIGQtPmxlbmd0aCA9IEhWTV9DUFVf TVNSX1NJWkUoY3R4dC0+Y291bnQpOwogICAgICAgICAgICAgaC0+Y3VyICs9IEhWTV9DUFVfTVNS X1NJWkUoY3R4dC0+Y291bnQpOworICAgICAgICB9CiAgICAgICAgIGVsc2UKKyAgICAgICAgICAg IC8qIG9yIHJld2luZCBhbmQgcmVtb3ZlIHRoZSBkZXNjcmlwdG9yIGZyb20gdGhlIHN0cmVhbS4g Ki8KICAgICAgICAgICAgIGgtPmN1ciAtPSBzaXplb2Yoc3RydWN0IGh2bV9zYXZlX2Rlc2NyaXB0 b3IpOwogICAgIH0KIAotLSAKMi4xLjQKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54 ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK