From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH RFC] x86/emulate: implement hvmemul_cmpxchg() with an actual CMPXCHG Date: Tue, 28 Mar 2017 11:25:55 +0100 Message-ID: References: <1490361899-18303-1-git-send-email-rcojocaru@bitdefender.com> <58DA510A0200007800148F6F@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: <58DA510A0200007800148F6F@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 , Razvan Cojocaru Cc: paul.durrant@citrix.com, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gMjgvMDMvMTcgMTE6MDMsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDI4LjAzLjE3IGF0 IDExOjE0LCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3JvdGU6Cj4+IEknbSBub3Qgc3Vy ZSB0aGF0IHRoZSBSRVRSWSBtb2RlbCBpcyB3aGF0IHRoZSBndWVzdCBPUyBleHBlY3RzLiBBRkFJ SywgYQo+PiBmYWlsZWQgQ01QWENIRyBzaG91bGQgaGFwcGVuIGp1c3Qgb25jZSwgd2l0aCB0aGUg cHJvcGVyIHJlZ2lzdGVycyBhbmQgWkYKPj4gc2V0LiBUaGUgZ3Vlc3Qgc3VyZWx5IGV4cGVjdHMg bmVpdGhlciB0aGF0IHRoZSBpbnN0cnVjdGlvbiByZXN1bWUgdW50aWwKPj4gaXQgc3VjY2VlZHMs IG5vciB0aGF0IHNvbWUgaGlkZGVuIGxvb3AgZ29lcyBvbiBmb3IgYW4gdW5kZXRlcm1pbmF0ZQo+ PiBhbW1vdW50IG9mIHRpbWUgdW50aWwgYSBDTVBYQ0hHIHN1Y2NlZWRzLgo+IFRoZSBndWVzdCBk b2Vzbid0IG9ic2VydmUgdGhlIENNUFhDSEcgZmFpbGluZyAtIFJFVFJZIGxlYWRzIHRvCj4gdGhl IGluc3RydWN0aW9uIGJlaW5nIHJlc3RhcnRlZCBpbnN0ZWFkIG9mIGNvbXBsZXRlZC4KCkFuZCB0 aGlzIHByb2JhYmx5IGlzIHRoZSByb290IG9mIHRoZSBwcm9ibGVtLiAgQ01QWENIRyBvbiBhIGNv bnRlbmRlZApsb2NhdGlvbiBzaG91bGQgYmUgb2JzZXJ2ZWQgdG8gZmFpbCBmcm9tIHRoZSBndWVz dHMgcG9pbnQgb2Ygdmlldy4KCj4KPiBUaGVyZSBpcyBhIHNldmVyZSBkb3duc2lkZSB0byBNTUlP IGFjY2Vzc2VzIHdpdGggdGhpcyBtb2RlbAo+IHRob3VnaDogT3RoZXIgdGhhbiBmb3IgUkFNLCB3 ZSBzaG91bGRuJ3QgYmUgcmVhZGluZyAoYW5kIGV2ZW4KPiBsZXNzIHNvIHdyaXRpbmcpIHRoZSBt ZW1vcnkgbG9jYXRpb24gbW9yZSB0aGFuIG9uY2UuCgpXaXRoIE1NSU8sIHRoZSBoYXJkd2FyZSBh bmFsb2d5IGlzIHNlbmRpbmcgYSBzaW5nbGUgUENJZSB0cmFuc2FjdGlvbgp3aXRoIHRoZSBhdG9t aWMgZmxhZyBzZXQuCgpIb3dldmVyLCBhdG9taWMgb3B0aW9ucyBvbiBub24tUkFNIGxvY2F0aW9u cyB0ZW5kIG5vdCB0byBhY3R1YWxseSBiZQphdG9taWMgb24gcmVhbCBoYXJkd2FyZSBhbnl3YXks IHNvIHNvLWxvbmcgYXMgd2UgZG9uJ3QgbWFrZSBtdWx0aXBsZQpyZWFkcy93cml0ZXMsIHRoZSBs YWNrIG9mIGF0b21pY2l0eSB3b24ndCBiZSBhIHByb2JsZW0gaW4gcHJhY3RpY2UuCgo+Cj4+IFRo ZSBwaWN0dXJlIGlzIGZ1cnRoZXIgY29tcGxpY2F0ZWQgYnkgdGhlIHR3by1wYXJ0IGhhbmRsaW5n IG9mCj4+IGluc3RydWN0aW9ucyBpbiB4ODZfZW11bGF0ZSgpLiBGb3IgZXhhbXBsZSwgZm9yIENN UFhDSEcgd2UgaGF2ZToKPj4gWy4uLl0KPj4gSSBub3cgc2VlIHRoYXQgdGhpcyBpcyB3aHkgdXNp bmcgYSBzcGlubG9jayBvbmx5IGFyb3VuZCB0aGUgd3JpdGViYWNrCj4+IHBhcnQgZGlkIG5vdCBz b2x2ZSB0aGUgaXNzdWU6IGJvdGggdGhlIGNvbXBhcmUgcGFydCBhbmQgdGhlIHdyaXRlYmFjawo+ PiBwYXJ0IG5lZWQgdG8gYmUgcGFydCBvZiB0aGUgc2FtZSBhdG9taWMgb3BlcmF0aW9uIC0gbG9j ayBuZWVkcyB0byBiZQo+PiBhcXVpcmVkIGJlZm9yZSB0aGUgY21wIC8gWkYgcGFydC4KPiBObyBl eGFjdGx5OiBSTVcgaW5zbnMgcmVxdWlyZSB0aGUgbG9jayB0byBiZSBhY3F1aXJlZCBhaGVhZCBv Zgo+IHRoZSBtZW1vcnkgcmVhZCwgYW5kIGRyb3BwZWQgYWZ0ZXIgdGhlIG1lbW9yeSB3cml0ZS4K Pgo+PiBPcGluaW9ucyBhbmQgc3VnZ2VzdGlvbnMgYXJlIGFwcHJlY2lhdGVkLiBJZiBJJ20gbm90 IG1pc3Rha2VuLCBpdCBsb29rcwo+PiBsaWtlIHRoZSBzbXBfbG9jayBkZXNpZ24gaXMgdGhlIGJl dHRlciBzb2x1dGlvbiB0byB0aGUgcHJvYmxlbS4KPiBBbmRyZXcgaGFzIHRvbGQgbWUgdGhhdCB0 aGUgcmUtd29yayBvZiBob3cgd2UgZG8gbWVtb3J5IGFjY2Vzc2VzCj4gaW4gdGhlIGVtdWxhdG9y IGlzIHByZXR0eSBoaWdoIG9uIGhpcyBwcmlvcml0eSBsaXN0IG5vdy4gV2hldGhlciB3ZSdkCj4g d2FudCB0byBpbnRyb2R1Y2UgYW4gaW50ZXJpbSBzb2x1dGlvbiB0aGVyZWZvcmUgZGVwZW5kcyBv biB0aGUgdGltZQo+IHNjYWxlIHRvIHBvc3NpYmx5IHJlYWNoIHRoZSBvbmx5IHVsdGltYXRlbHkg Y29ycmVjdCBzb2x1dGlvbiAobm8gbG9uZ2VyCj4gYWN0aW5nIG9uIGludGVybWVkaWF0ZSBjb3Bp ZXMgb2YgdGhlIGRhdGEgY29taW5nIGZyb20gZ3Vlc3QgbWVtb3J5LAo+IHdoaWNoIGlzIG9ubHkg Y29ycmVjdCBmb3IgcGxhaW4gcmVhZHMgYW5kIHBsYWluIHdyaXRlcykuCgpUaGlzIHJlLWVuZm9y Y2VzIG15IG9waW5pb24gdGhhdCBtYXBwaW5nIHRoZSBkZXN0aW5hdGlvbiBhbmQgcG9pbnRpbmcg YQpzdHViIGF0IHRoZSBtYXBwaW5nIGlzIHRoZSBvbmx5IHZpYWJsZSBvcHRpb24uCgp+QW5kcmV3 CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2 ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVu Lm9yZy94ZW4tZGV2ZWwK