From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shuai Ruan Subject: Re: [V5] x86/xsaves: fix overwriting between non-lazy/lazy xsaves Date: Wed, 23 Mar 2016 10:02:24 +0800 Message-ID: <45615.7328481369$1458698802@news.gmane.org> References: <1458270080-19493-1-git-send-email-shuai.ruan@linux.intel.com> <56F1660902000078000DF38B@prv-mh.provo.novell.com> Reply-To: Shuai Ruan Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <56F1660902000078000DF38B@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: andrew.cooper3@citrix.com, keir@xen.org, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gVHVlLCBNYXIgMjIsIDIwMTYgYXQgMDg6MzQ6MzNBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4gPj4+IE9uIDE4LjAzLjE2IGF0IDA0OjAxLCA8c2h1YWkucnVhbkBsaW51eC5pbnRlbC5j b20+IHdyb3RlOgo+ID4gICAgICAgKiBDb3B5IGxlZ2FjeSBYU0FWRSBhcmVhLCB0byBhdm9pZCBj b21wbGljYXRpb25zIHdpdGggQ1BVSUQKPiA+ICAgICAgICogbGVhdmVzIDAgYW5kIDEgaW4gdGhl IGxvb3AgYmVsb3cuCj4gPiAgICAgICAqLwo+ID4gICAgICBtZW1jcHkoeHNhdmUsIHNyYywgRlhT QVZFX1NJWkUpOwo+ID4gIAo+ID4gLSAgICAvKiBTZXQgWFNUQVRFX0JWIGFuZCBYQ09NUF9CVi4g ICovCj4gPiArICAgIC8qIFNldCBYU1RBVEVfQlYuICAqLwo+ID4gICAgICB4c2F2ZS0+eHNhdmVf aGRyLnhzdGF0ZV9idiA9IHhzdGF0ZV9idjsKPiA+IC0gICAgeHNhdmUtPnhzYXZlX2hkci54Y29t cF9idiA9IHYtPmFyY2gueGNyMF9hY2N1bSB8IFhTVEFURV9DT01QQUNUSU9OX0VOQUJMRUQ7Cj4g PiAgICAgIHNldHVwX3hzdGF0ZV9jb21wKHhzdGF0ZV9jb21wX29mZnNldHMsIHhzdGF0ZV9idik7 Cj4gCj4gSSBzZWUgeW91IHNldCB4Y29tcF9idiAoYW5kIGhlbmNlIHRoZSBjb21wYWN0aW9uIGJp dCkgaW4geHJzdG9yKCkKPiBub3csIGJ1dCBhZmFpY3QgdGhhdCBkb2Vzbid0IGFsbG93IHlvdSB0 byBjb21wbGV0ZWx5IGRyb3AgaW5pdGlhbGl6aW5nCj4gdGhlIGZpZWxkIGhlcmUsIGFzIHRoZSBj b2RlIHRoZXJlIGxvb2tzIGF0IHRoZSBjb21wYWN0aW9uIGJpdC4KPiAKPiA+ICsgICAgICAgICAg ICBlbHNlCj4gPiArICAgICAgICAgICAgICAgIFhSU1RPUigiMHg0OCwiLCIweDBmLDB4YWUsMHgy ZiIpOyAvKiB4cnN0b3IgKi8KPiAKPiBBdCB0aGlzIHBvaW50LCB3aGF0IGd1YXJhbnRlZXMgdGhh dCB4Y29tcF9idiBpcyB6ZXJvLCBubyBtYXR0ZXIKPiB3aGVyZSB0aGUgc3RhdGUgdG8gYmUgbG9h ZGVkIG9yaWdpbmF0ZXMgZnJvbT8gSSB0aGluayBhdCBsZWFzdCBpbgo+IGFyY2hfc2V0X2luZm9f Z3Vlc3QoKSwgaHZtX2xvYWRfY3B1X2N0eHQoKSwgYW5kCj4gaHZtX3ZjcHVfcmVzZXRfc3RhdGUo KSB5b3Ugd2VudCB0b28gZmFyIGRlbGV0aW5nIGNvZGUsIGFuZCB5b3UKPiByZWFsbHkgbmVlZCB0 byBrZWVwIHRoZSBzdG9yaW5nIG9mIHplcm8gdGhlcmUuIERpZCB5b3UgZHJhdywganVzdAo+IGZv ciB5b3Vyc2VsZiwgbWVudGFsbHkgb3Igb24gYSBzaGVldCBvZiBwYXBlciwgYSBkaWFncmFtIGls bHVzdHJhdGluZwo+IHRoZSB2YXJpb3VzIHN0YXRlIHRyYW5zaXRpb25zPwo+IApGb3IgYWJvdmUg dHdvIGNvbW1lbnRzLgoKVGhlIHBhdGNoIGlzIGJhc2Ugb24gW3Y0XXg4Ni94c2F2ZXM6IGNhbGN1 bGF0ZSB0aGUgeHN0YXRlX2NvbXBfb2Zmc2V0cyBiYXNlCm9uIHhzdGF0ZV9idiBhbmQgSSBhbnN3 ZXIgeW91ciBxdWVzdGlvbiBvbiB3aHkgY2FjdWxhdGUgeHN0YXRlX2NvbXBfb2Zmc2V0CmJhc2Vk IG9uIHhzdGF0ZV9idiBpbiBwcmV2aW91cyB0aHJlYWQuIElmIHRoYXQgaXMgcmlnaHQsIGRyb3AK aW5pdGlhbGl6aW5nIHhjb21wX2J2IGlzIG9rLiBOb3cgeGNvbXBfYnYgY2FuIGd1YXJhbnRlZSB0 byBiZSB6ZXJvIGZvciAKYXJjaF9zZXRfaW5mb19ndWVzdCgpIGFuZCBodm1fbG9hZF9jcHVfY3R4 dCgpLiBJZiB0aGUgZHJvcCBpcyB3cm9uZwooZHVlIHRvIG15IG1pc3VuZGVyc3RhbmQgb2YgdGhl IFNETSksIEkgd2lsbCBjaGFuZ2UgdGhlIGlmICgpIGhlcmUuCgpGb3IgaHZtX3ZjcHVfcmVzZXRf c3RhdGUoKSwgd2Ugc2hvdWxkIGRlcGVuZCBvbiB3aGV0aGVyIHhzYXZlcyBpcyB1c2VkIAp0byBk ZWNpZGUgd2hldGhlciB0byBpbml0IHhjb21wX2J2IG9yIG5vdC4gQW5kIGN1cnJlbnRseSB3ZSB1 c2UKeGNyMF9hY2N1bSB0byBpbmRpY2F0ZSB0aGUgdXNlIG9mIHhzYXZlcywgd2hlbiBodm1fdmNw dV9yZXNldF9zdGF0ZSgpCmlzIGNhbGxlZCAsIGNhbiB2Y3B1LT54Y3IwX2FjY3VtIGluZGljYXRl IHVzaW5nIG9mIHhzYXZlcyA/CkkgdGhpbmsgaW4gaHZtX3ZjcHVfcmVzZXRfc3RhdGUoKSwgd2Ug c2hvdWxkIGxlYXZlIHhjb21wX2J2IHplcm8uCgo+IFhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCj4g aHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBs aXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=