From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH RFC] x86/emulate: implement hvmemul_cmpxchg() with an actual CMPXCHG Date: Fri, 31 Mar 2017 09:04:42 -0600 Message-ID: <58DE8C2A020000780014B6BF@prv-mh.provo.novell.com> References: <1490361899-18303-1-git-send-email-rcojocaru@bitdefender.com> <925827a5-b346-1733-3c0a-64eaa7b3e251@bitdefender.com> <58DA5B7E020000780014900C@prv-mh.provo.novell.com> <58DBD8FF020000780014A113@prv-mh.provo.novell.com> <185bbccb-0156-07fe-d060-6135cae07caf@bitdefender.com> <3e753894-4727-5d4f-1ced-9be09c035e2f@bitdefender.com> <58DD10BD020000780014AA0E@prv-mh.provo.novell.com> <11554a95-1be5-3ee3-fd76-a3bde650ebe0@bitdefender.com> <58DD3081020000780014AB39@prv-mh.provo.novell.com> <58DD44AE020000780014ACF2@prv-mh.provo.novell.com> <36d0e322-407c-16dd-8831-ebc2f7f33021@bitdefender.com> <58DE22BF020000780014B070@prv-mh.provo.novell.com> <2e799e78-9a6b-cf92-a98d-009920258f77@bitdefender.com> <58DE87FF020000780014B66E@prv-mh.provo.novell.com> <70fa19a1-e11e-d729-9dbd-ead8d06a00fa@bitdefender.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <70fa19a1-e11e-d729-9dbd-ead8d06a00fa@bitdefender.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Razvan Cojocaru Cc: andrew.cooper3@citrix.com, paul.durrant@citrix.com, Tim Deegan , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDMxLjAzLjE3IGF0IDE3OjAxLCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3Jv dGU6Cj4gT24gMDMvMzEvMjAxNyAwNTo0NiBQTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+IE9u IDMxLjAzLjE3IGF0IDExOjU2LCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3JvdGU6Cj4+ PiBPbiAwMy8zMS8yMDE3IDEwOjM0IEFNLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+PiBPbiAz MS4wMy4xNyBhdCAwODoxNywgPHJjb2pvY2FydUBiaXRkZWZlbmRlci5jb20+IHdyb3RlOgo+Pj4+ PiBPbiAwMy8zMC8yMDE3IDA2OjQ3IFBNLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+PiBTcGVh a2luZyBvZiBlbXVsYXRlZCBNTUlPLCBJJ3ZlIGdvdCB0aGlzIHdoZW4gdGhlIGd1ZXN0IHdhcyBj cmFzaGluZwo+Pj4+Pj4+IGltbWVkaWF0ZWx5IChwcmUgUkVUUlkgbG9vcCk6Cj4+Pj4+Pj4KPj4+ Pj4+PiAgTU1JTyBlbXVsYXRpb24gZmFpbGVkOiBkM3Y4IDMyYml0IEAgMDAwODo4MjY3OWYzYyAt PiBmMCAwZiBiYSAzMCAwMCA3Mgo+Pj4+Pj4+IDA3IDhiIGNiIGU4IGRhIDRiIGZmIGZmIDhiIDQ1 Cj4+Pj4+Pgo+Pj4+Pj4gVGhhdCdzIGEgQlRSLCB3aGljaCB3ZSBzaG91bGQgYmUgZW11bGF0aW5n IGZpbmUuIE1vcmUgaW5mb3JtYXRpb24KPj4+Pj4+IHdvdWxkIG5lZWQgdG8gYmUgY29sbGVjdGVk IHRvIGhhdmUgYSBjaGFuY2UgdG8gdW5kZXJzdGFuZCB3aGF0Cj4+Pj4+PiBtaWdodCBiZSBnb2lu ZyBvbmUgKGZpcnN0IG9mIGFsbCB0aGUgdmlydHVhbCBhbmQgcGh5c2ljYWwgbWVtb3J5Cj4+Pj4+ PiBhZGRyZXNzIHRoaXMgd2FzIHRyeWluZyB0byBhY3Qgb24pLgo+Pj4+Pgo+Pj4+PiBSaWdodCwg dGhlIEJUUiBwYXJ0IHNob3VsZCBiZSBmaW5lLCBidXQgSSB0aGluayB0aGUgTE9DSyBwYXJ0IGlz IHdoYXQncwo+Pj4+PiBjYXVzaW5nIHRoZSBpc3N1ZS4gSSd2ZSBkb25lIGEgZmV3IG1vcmUgdGVz dCBydW5zIHRvIHNlZSB3aGF0IHJldHVybgo+Pj4+PiBSRVRSWSAoZHVtcGluZyB0aGUgaW5zdHJ1 Y3Rpb24gd2l0aCBhbiAiKHIpIiBwcmVmaXggdG8gZGlzdGluZ3Vpc2ggZnJvbQo+Pj4+PiB0aGUg VU5IQU5ETEVBQkxFIGR1bXApLCBhbmQgYSBjb3VwbGUgb2YgaW5zdHJ1Y3Rpb25zIHJldHVybiBS RVRSWSAoQlRSCj4+Pj4+IGFuZCBYQURELCBib3RoIExPQ0stcHJlZml4ZWQsIHdoaWNoIG1lYW5z IHRoZXkgbm93IGludm9sdmUgQ01QWENIRwo+Pj4+PiBoYW5kbGVyLCB3aGljaCBwcmVzdW1hYmx5 IG5vdyBmYWlscyAtIHBvc3NpYmx5IHNpbXBseSBiZWNhdXNlIGl0J3MKPj4+Pj4gYWx3YXlzIExP Q0tlZCBpbiBteSBwYXRjaCk6Cj4+Pj4KPj4+PiBXZWxsLCBhbGwgb2YgdGhhdCBsb29rcyB0byBi ZSBleHBlY3RlZCBiZWhhdmlvci4gSSdtIGFmcmFpZCBJIGRvbid0IHNlZQo+Pj4+IGhvdyB0aGlz IGluZm9ybWF0aW9uIGhlbHBzIHVuZGVyc3RhbmRpbmcgdGhlIE1NSU8gZW11bGF0aW9uIGZhaWx1 cmUKPj4+PiBhYm92ZS4KPj4+Cj4+PiBJJ3ZlIG1hbmFnZWQgdG8gb2J0YWluIHRoaXMgbG9nIG9m IGVtdWxhdGlvbiBlcnJvcnM6Cj4+PiBodHRwczovL3Bhc3RlYmluLmNvbS9Fc3kxU2tIeCAKPj4+ Cj4+PiBUaGUgInZpcnR1YWwgYWRkcmVzcyIgbGluZXMgdGhhdCBhcmUgbm90IGZvbGxvd2VkIGJ5 IGFueSAiTWVtIGV2ZW50Igo+Pj4gbGluZSBjb3JyZXNwb25kIHRvIENNWENIR19GQUlMRUQgcmV0 dXJuIGNvZGVzLgo+Pj4KPj4+IFRoZSB2ZXJ5IGxhc3QgbGluZSBpcyBhIE1NSU8gZW11bGF0aW9u IGZhaWxlZC4KPj4+Cj4+PiBJdCdzIHByb2JhYmx5IGltcG9ydGFudCB0aGF0IHRoaXMgaGFwcGVu cyB3aXRoIHRoZSBtb2RlbCB3aGVyZQo+Pj4gaHZtX2VtdWxhdGVfb25lX3ZtX2V2ZW50KCkgZG9l cyBfbm90XyByZS10cnkgdGhlIGVtdWxhdGlvbiB1bnRpbCBpdAo+Pj4gc3VjY2VlZHMuIFRoZSBv dGhlciBtb2RlbCBhbGxvd3MgbWUgdG8gZ28gZnVydGhlciB3aXRoIHRoZSBndWVzdCwgYnV0Cj4+ PiBldmVudHVhbGx5IEkgZ2V0IHRpbWVvdXQtcmVsYXRlZCBCU09EcyBvciB0aGUgZ3Vlc3QgYmVj b21lcyB1bnJlc3BvbnNpdmUuCj4+IAo+PiBJbnRlcmVzdGluZy4gWW91IGRpZG4ndCBjbGFyaWZ5 IHdoYXQgdGhlIHByaW50ZWQgIm9mZnNldCIgdmFsdWVzIGFyZSwKPj4gYW5kIGl0IGRvZXNuJ3Qg bG9vayBsaWtlIHRoZXNlIGhhdmUgYW55IGNvcnJlbGF0aW9uIHdpdGggdGhlIHVuZGVybHlpbmcK Pj4gKGd1ZXN0KSBwaHlzaWNhbCBhZGRyZXNzLCB3aGljaCB3ZSB3b3VsZCBhbHNvIHdhbnQgdG8g c2VlLiBBbmQgdGhlbgo+PiBpdCBzdHJpa2VzIG1lIGFzIG9kZCB0aGF0IGluIHRoZXNlIGxhc3Qg bGluZXMKPj4gCj4+IChYRU4pIE1lbSBldmVudCAoUkVUUlkpIGVtdWxhdGlvbiBmYWlsZWQ6IGQ1 djggMzJiaXQgQCAwMDA4OjgyNmJiODYxIC0+IGYwIDBmIAo+IGJhIDMwIDAwIDcyIDA3IDhiIGNi IGU4IGRhIDRiIGZmIGZmIDhiIDQ1Cj4+IChYRU4pIHZpcnR1YWwgYWRkcmVzczogMHhmZmQwODBm MCwgb2Zmc2V0OiA0MjkxODU0NTc2Cj4+IChYRU4pIE1NSU8gZW11bGF0aW9uIGZhaWxlZDogZDV2 OCAzMmJpdCBAIDAwMDg6ODI2NTVmM2MgLT4gZjAgMGYgYmEgMzAgMDAgNzIgCj4gMDcgOGIgY2Ig ZTggZGEgNGIgZmYgZmYgOGIgNDUKPj4gCj4+IHRoZSBpbnN0cnVjdGlvbiBwb2ludGVycyBhbmQg dmlydHVhbCBhZGRyZXNzZXMgYXJlIGRpZmZlcmVudCwgYnV0IHRoZQo+PiBjb2RlIGJ5dGVzIGFy ZSBleGFjdGx5IHRoZSBzYW1lLiBUaGlzIGRvZXNuJ3Qgc2VlbSB2ZXJ5IGxpa2VseSwgc28gSQo+ PiB3b25kZXIgd2hldGhlciB0aGVyZSdzIGFuIGlzc3VlIHdpdGggdXMgd3JvbmdseSByZS11c2lu ZyBwcmV2aW91c2x5Cj4+IGZldGNoZWQgaW5zbiBieXRlcy4gKE9mIGNvdXJzZSBJJ2QgYmUgaGFw cHkgdG8gYmUgcHJvdmVuIHdyb25nIHdpdGgKPj4gdGhpcyBndWVzc2luZywgYnkgeW91IGNoZWNr aW5nIHRoZSBpbnZvbHZlZCBiaW5hcnkvaWVzLikKPiAKPiBPZmZzZXQgaXMgdGhlIGFjdHVhbCB2 YWx1ZSBvZiB0aGUgIm9mZnNldCIgcGFyYW1ldGVyIG9mCj4gaHZtZW11bF9jbXB4Y2hnKCkuCgpU aGF0J3Mgbm90IHZlcnkgdXNlZnVsIHRoZW4sIGFzIGZvciBmbGF0IHNlZ21lbnRzICJvZmZzZXQi ID09CiJ2aXJ0dWFsIGFkZHJlc3MiIChpLmUuIHlvdSBtZXJlbHkgcmUtcHJpbnQgaW4gZGVjaW1h bCB3aGF0IHlvdSd2ZQphbHJlYWR5IHByaW50ZWQgaW4gaGV4KS4KCkphbgoKCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxp c3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZl bAo=