From mboxrd@z Thu Jan 1 00:00:00 1970 From: Razvan Cojocaru Subject: Re: [for-4.7] x86/emulate: synchronize LOCKed instruction emulation Date: Thu, 14 Apr 2016 18:45:07 +0300 Message-ID: <570FBB03.1060808@bitdefender.com> References: <1460550374-4344-1-git-send-email-rcojocaru@bitdefender.com> <570F725F.2030209@citrix.com> <570F827F.2060401@bitdefender.com> <570FC7E002000078000E67BB@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <570FC7E002000078000E67BB@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: tim@xen.org, wei.liu2@citrix.com, george.dunlap@eu.citrix.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, xen-devel@lists.xen.org, paul.durrant@citrix.com, david.vrabel@citrix.com, keir@xen.org List-Id: xen-devel@lists.xenproject.org T24gMDQvMTQvMjAxNiAwNjo0MCBQTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gUmF6dmFuIENv am9jYXJ1IDxyY29qb2NhcnVAYml0ZGVmZW5kZXIuY29tPiAwNC8xNC8xNiAxOjQzIFBNID4+Pgo+ PiBPbiAwNC8xNC8yMDE2IDAxOjM1IFBNLCBEYXZpZCBWcmFiZWwgd3JvdGU6Cj4+PiBPbiAxMy8w NC8xNiAxMzoyNiwgUmF6dmFuIENvam9jYXJ1IHdyb3RlOgo+Pj4+IExPQ0stcHJlZml4ZWQgaW5z dHJ1Y3Rpb25zIGFyZSBjdXJyZW5seSBhbGxvd2VkIHRvIHJ1biBpbiBwYXJhbGxlbAo+Pj4+IGlu IHg4Nl9lbXVsYXRlKCksIHdoaWNoIGNhbiBsZWFkIHRoZSBndWVzdCBpbnRvIGFuIHVuZGVmaW5l ZCBzdGF0ZS4KPj4+PiBUaGlzIHBhdGNoIGZpeGVzIHRoZSBpc3N1ZS4KPj4+Cj4+PiBJcyB0aGlz IHN1ZmZpY2llbnQ/ICBXaGF0IGlmIGFub3RoZXIgVkNQVSBpcyBydW5uaW5nIG9uIGFub3RoZXIg UENQVSBhbmQKPj4+IGRvaW5nIGFuIHVuZW11bGF0ZWQgTE9DSy1wcmVmaXhlZCBpbnN0cnVjdGlv biB0byB0aGUgc2FtZSBtZW1vcnkgYWRkcmVzcz8KPj4+Cj4+PiBUaGlzIG90aGVyIFZDUFUgY291 bGQgYmUgZm9yIGFub3RoZXIgZG9tYWluIChvciBYZW4gZm9yIHRoYXQgbWF0dGVyKS4KPj4KPj4g VGhlIHBhdGNoIGlzIG9ubHkgc3VmZmljaWVudCBmb3IgcGFyYWxsZWwgcnVucyBvZiBlbXVsYXRl ZCBpbnN0cnVjdGlvbnMsCj4+IGFzIHByZXZpb3VzbHkgc3RhdGVkLiBJdCBpcywgaG93ZXZlciwg YWJsZSB0byBwcmV2ZW50IG5hc3R5IGd1ZXN0IGxvY2t1cHMuCj4+Cj4+IFRoaXMgaXMgd2hhdCBo YXBwZW5lZCBpbiBhIHByZXZpb3VzIHRocmVhZCB3aGVyZSBJIHdhcyBodW50aW5nIGRvd24gdGhl Cj4+IGlzc3VlIGFuZCBpbml0aWFsbHkgdGhvdWdodCB0aGF0IHRoZSB4ZW4tYWNjZXNzLmMgbW9k ZWwgd2FzIGJyb2tlbiB3aGVuCj4+IHVzZWQgd2l0aCBlbXVsYXRpb24sIGFuZCBldmVuIHByb2Nl ZWRlZCB0byBjaGVjayB0aGF0IHRoZSByaW5nIGJ1ZmZlcgo+PiBtZW1vcnkgYWNjZXNzZXMgYXJl IHN5bmNocm9uaXplZCBwcm9wZXJseS4gVGhleSB3ZXJlIGFscmlnaHQsIHRoZQo+PiBwcm9ibGVt IHdhcyBpbiBmYWN0IExPQ0tlZCBpbnN0cnVjdGlvbiBlbXVsYXRpb24gaGFwcGVuaW5nIGluIHBh cmFsbGVsLAo+PiBpLmUuIGEgcmFjZSBjb25kaXRpb24gdGhlcmUuCj4+Cj4+IFRoaXMgaXMgbGVz cyBvYnZpb3VzIGlmIHdlIHNpZ25hbCB0aGF0IHZtX2V2ZW50IHJlc3BvbnNlcyBhcmUgYXZhaWxh YmxlCj4+IGltbWVkaWF0ZWx5IGFmdGVyIHByb2Nlc3NpbmcgZWFjaCBvbmUgKHdoaWNoIGdyZWF0 bHkgcmVkdWNlcyB0aGUgY2hhbmNlcwo+PiBvZiBhIHJhY2UgaGFwcGVuaW5nKSwgYW5kIG1vcmUg b2J2aW91cyB3aXRoIGd1ZXN0cyB0aGF0IGhhdmUgMiAob3IgbW9yZSkKPj4gVkNQVXMgd2hlcmUg YWxsIG9mIHRoZW0gYXJlIHBhdXNlZCB3YWl0aW5nIGZvciBhIHZtX2V2ZW50IHJlcGx5LCBhbmQg YWxsCj4+IG9mIHRoZW0gYXJlIHdva2VuIHVwIGF0IHRoZSBzYW1lIHRpbWUsIGFmdGVyIHByb2Nl c3NpbmcgYWxsIG9mIHRoZQo+PiBldmVudHMsIGFuZCBhc2tlZCB0byBlbXVsYXRlLgo+Pgo+PiBJ IGRvIGJlbGlldmUgdGhhdCBzb21ld2hlcmUgaW4gWGVuIGVtdWxhdGluZyBpbiB0aGlzIG1hbm5l ciBjb3VsZCBvY2N1ciwKPj4gc28gSSBob3BlIHRvIG1ha2UgZW11bGF0aW9uIGdlbmVyYWxseSBz YWZlci4KPj4KPj4gQXMgZm9yIG5vdCBmaXhpbmcgdGhlIF93aG9sZV8gaXNzdWUsIGFzIEphbiBo YXMgcmlnaHRseSBwb2ludGVkIG91dCwKPj4gdGhhdCdzIGEgcmF0aGVyIGRpZmZpY3VsdCB0aGlu ZyB0byBkby4KPiAKPiBUbyBiZSBob25lc3QsIGp1c3QgaGF2aW5nIHJlbWVtYmVyZWQgdGhhdCB3 ZSBkbyB0aGUgd3JpdGUgYmFjayBmb3IgbG9ja2VkCj4gaW5zdHJ1Y3Rpb25zIHVzaW5nIENNUFhD SEcsIEknZCBmaXJzdCBvZiBhbGwgbGlrZSB0byBzZWUgYSBwcm9wZXIgZGVzY3JpcHRpb24KPiBv ZiAidGhlIF93aG9sZV8gaXNzdWUiLgoKSSBiZWxpZXZlIGF0IGxlYXN0IHBhcnQgb2YgdGhlIGlz c3VlIGhhcyB0byBkbyB3aXRoIHRoZSBjb21tZW50IG9uIGxpbmUKMTAxMyBmcm9tIHhlbi9hcmNo L3g4Ni9odm0vZW11bGF0ZS5jOgoKIDk5NCBzdGF0aWMgaW50IGh2bWVtdWxfY21weGNoZygKIDk5 NSAgICAgZW51bSB4ODZfc2VnbWVudCBzZWcsCiA5OTYgICAgIHVuc2lnbmVkIGxvbmcgb2Zmc2V0 LAogOTk3ICAgICB2b2lkICpwX29sZCwKIDk5OCAgICAgdm9pZCAqcF9uZXcsCiA5OTkgICAgIHVu c2lnbmVkIGludCBieXRlcywKMTAwMCAgICAgc3RydWN0IHg4Nl9lbXVsYXRlX2N0eHQgKmN0eHQp CjEwMDEgewoxMDAyICAgICBzdHJ1Y3QgaHZtX2VtdWxhdGVfY3R4dCAqaHZtZW11bF9jdHh0ID0K MTAwMyAgICAgICAgIGNvbnRhaW5lcl9vZihjdHh0LCBzdHJ1Y3QgaHZtX2VtdWxhdGVfY3R4dCwg Y3R4dCk7CjEwMDQKMTAwNSAgICAgaWYgKCB1bmxpa2VseShodm1lbXVsX2N0eHQtPnNldF9jb250 ZXh0KSApCjEwMDYgICAgIHsKMTAwNyAgICAgICAgIGludCByYyA9IHNldF9jb250ZXh0X2RhdGEo cF9uZXcsIGJ5dGVzKTsKMTAwOAoxMDA5ICAgICAgICAgaWYgKCByYyAhPSBYODZFTVVMX09LQVkg KQoxMDEwICAgICAgICAgICAgIHJldHVybiByYzsKMTAxMSAgICAgfQoxMDEyCjEwMTMgICAgIC8q IEZpeCB0aGlzIGluIGNhc2UgdGhlIGd1ZXN0IGlzIHJlYWxseSByZWx5aW5nIG9uIHItbS13CmF0 b21pY2l0eS4gKi8KMTAxNCAgICAgcmV0dXJuIGh2bWVtdWxfd3JpdGUoc2VnLCBvZmZzZXQsIHBf bmV3LCBieXRlcywgY3R4dCk7CjEwMTUgfQoKClRoYW5rcywKUmF6dmFuCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0 Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=