From mboxrd@z Thu Jan 1 00:00:00 1970 From: Razvan Cojocaru Subject: Re: [PATCH RFC] x86/emulate: implement hvmemul_cmpxchg() with an actual CMPXCHG Date: Fri, 31 Mar 2017 18:01:39 +0300 Message-ID: <70fa19a1-e11e-d729-9dbd-ead8d06a00fa@bitdefender.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> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <58DE87FF020000780014B66E@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, paul.durrant@citrix.com, Tim Deegan , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gMDMvMzEvMjAxNyAwNTo0NiBQTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gT24gMzEuMDMu MTcgYXQgMTE6NTYsIDxyY29qb2NhcnVAYml0ZGVmZW5kZXIuY29tPiB3cm90ZToKPj4gT24gMDMv MzEvMjAxNyAxMDozNCBBTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+PiBPbiAzMS4wMy4xNyBh dCAwODoxNywgPHJjb2pvY2FydUBiaXRkZWZlbmRlci5jb20+IHdyb3RlOgo+Pj4+IE9uIDAzLzMw LzIwMTcgMDY6NDcgUE0sIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+Pj4gU3BlYWtpbmcgb2YgZW11 bGF0ZWQgTU1JTywgSSd2ZSBnb3QgdGhpcyB3aGVuIHRoZSBndWVzdCB3YXMgY3Jhc2hpbmcKPj4+ Pj4+IGltbWVkaWF0ZWx5IChwcmUgUkVUUlkgbG9vcCk6Cj4+Pj4+Pgo+Pj4+Pj4gIE1NSU8gZW11 bGF0aW9uIGZhaWxlZDogZDN2OCAzMmJpdCBAIDAwMDg6ODI2NzlmM2MgLT4gZjAgMGYgYmEgMzAg MDAgNzIKPj4+Pj4+IDA3IDhiIGNiIGU4IGRhIDRiIGZmIGZmIDhiIDQ1Cj4+Pj4+Cj4+Pj4+IFRo YXQncyBhIEJUUiwgd2hpY2ggd2Ugc2hvdWxkIGJlIGVtdWxhdGluZyBmaW5lLiBNb3JlIGluZm9y bWF0aW9uCj4+Pj4+IHdvdWxkIG5lZWQgdG8gYmUgY29sbGVjdGVkIHRvIGhhdmUgYSBjaGFuY2Ug dG8gdW5kZXJzdGFuZCB3aGF0Cj4+Pj4+IG1pZ2h0IGJlIGdvaW5nIG9uZSAoZmlyc3Qgb2YgYWxs IHRoZSB2aXJ0dWFsIGFuZCBwaHlzaWNhbCBtZW1vcnkKPj4+Pj4gYWRkcmVzcyB0aGlzIHdhcyB0 cnlpbmcgdG8gYWN0IG9uKS4KPj4+Pgo+Pj4+IFJpZ2h0LCB0aGUgQlRSIHBhcnQgc2hvdWxkIGJl IGZpbmUsIGJ1dCBJIHRoaW5rIHRoZSBMT0NLIHBhcnQgaXMgd2hhdCdzCj4+Pj4gY2F1c2luZyB0 aGUgaXNzdWUuIEkndmUgZG9uZSBhIGZldyBtb3JlIHRlc3QgcnVucyB0byBzZWUgd2hhdCByZXR1 cm4KPj4+PiBSRVRSWSAoZHVtcGluZyB0aGUgaW5zdHJ1Y3Rpb24gd2l0aCBhbiAiKHIpIiBwcmVm aXggdG8gZGlzdGluZ3Vpc2ggZnJvbQo+Pj4+IHRoZSBVTkhBTkRMRUFCTEUgZHVtcCksIGFuZCBh IGNvdXBsZSBvZiBpbnN0cnVjdGlvbnMgcmV0dXJuIFJFVFJZIChCVFIKPj4+PiBhbmQgWEFERCwg Ym90aCBMT0NLLXByZWZpeGVkLCB3aGljaCBtZWFucyB0aGV5IG5vdyBpbnZvbHZlIENNUFhDSEcK Pj4+PiBoYW5kbGVyLCB3aGljaCBwcmVzdW1hYmx5IG5vdyBmYWlscyAtIHBvc3NpYmx5IHNpbXBs eSBiZWNhdXNlIGl0J3MKPj4+PiBhbHdheXMgTE9DS2VkIGluIG15IHBhdGNoKToKPj4+Cj4+PiBX ZWxsLCBhbGwgb2YgdGhhdCBsb29rcyB0byBiZSBleHBlY3RlZCBiZWhhdmlvci4gSSdtIGFmcmFp ZCBJIGRvbid0IHNlZQo+Pj4gaG93IHRoaXMgaW5mb3JtYXRpb24gaGVscHMgdW5kZXJzdGFuZGlu ZyB0aGUgTU1JTyBlbXVsYXRpb24gZmFpbHVyZQo+Pj4gYWJvdmUuCj4+Cj4+IEkndmUgbWFuYWdl ZCB0byBvYnRhaW4gdGhpcyBsb2cgb2YgZW11bGF0aW9uIGVycm9yczoKPj4gaHR0cHM6Ly9wYXN0 ZWJpbi5jb20vRXN5MVNrSHggCj4+Cj4+IFRoZSAidmlydHVhbCBhZGRyZXNzIiBsaW5lcyB0aGF0 IGFyZSBub3QgZm9sbG93ZWQgYnkgYW55ICJNZW0gZXZlbnQiCj4+IGxpbmUgY29ycmVzcG9uZCB0 byBDTVhDSEdfRkFJTEVEIHJldHVybiBjb2Rlcy4KPj4KPj4gVGhlIHZlcnkgbGFzdCBsaW5lIGlz IGEgTU1JTyBlbXVsYXRpb24gZmFpbGVkLgo+Pgo+PiBJdCdzIHByb2JhYmx5IGltcG9ydGFudCB0 aGF0IHRoaXMgaGFwcGVucyB3aXRoIHRoZSBtb2RlbCB3aGVyZQo+PiBodm1fZW11bGF0ZV9vbmVf dm1fZXZlbnQoKSBkb2VzIF9ub3RfIHJlLXRyeSB0aGUgZW11bGF0aW9uIHVudGlsIGl0Cj4+IHN1 Y2NlZWRzLiBUaGUgb3RoZXIgbW9kZWwgYWxsb3dzIG1lIHRvIGdvIGZ1cnRoZXIgd2l0aCB0aGUg Z3Vlc3QsIGJ1dAo+PiBldmVudHVhbGx5IEkgZ2V0IHRpbWVvdXQtcmVsYXRlZCBCU09EcyBvciB0 aGUgZ3Vlc3QgYmVjb21lcyB1bnJlc3BvbnNpdmUuCj4gCj4gSW50ZXJlc3RpbmcuIFlvdSBkaWRu J3QgY2xhcmlmeSB3aGF0IHRoZSBwcmludGVkICJvZmZzZXQiIHZhbHVlcyBhcmUsCj4gYW5kIGl0 IGRvZXNuJ3QgbG9vayBsaWtlIHRoZXNlIGhhdmUgYW55IGNvcnJlbGF0aW9uIHdpdGggdGhlIHVu ZGVybHlpbmcKPiAoZ3Vlc3QpIHBoeXNpY2FsIGFkZHJlc3MsIHdoaWNoIHdlIHdvdWxkIGFsc28g d2FudCB0byBzZWUuIEFuZCB0aGVuCj4gaXQgc3RyaWtlcyBtZSBhcyBvZGQgdGhhdCBpbiB0aGVz ZSBsYXN0IGxpbmVzCj4gCj4gKFhFTikgTWVtIGV2ZW50IChSRVRSWSkgZW11bGF0aW9uIGZhaWxl ZDogZDV2OCAzMmJpdCBAIDAwMDg6ODI2YmI4NjEgLT4gZjAgMGYgYmEgMzAgMDAgNzIgMDcgOGIg Y2IgZTggZGEgNGIgZmYgZmYgOGIgNDUKPiAoWEVOKSB2aXJ0dWFsIGFkZHJlc3M6IDB4ZmZkMDgw ZjAsIG9mZnNldDogNDI5MTg1NDU3Ngo+IChYRU4pIE1NSU8gZW11bGF0aW9uIGZhaWxlZDogZDV2 OCAzMmJpdCBAIDAwMDg6ODI2NTVmM2MgLT4gZjAgMGYgYmEgMzAgMDAgNzIgMDcgOGIgY2IgZTgg ZGEgNGIgZmYgZmYgOGIgNDUKPiAKPiB0aGUgaW5zdHJ1Y3Rpb24gcG9pbnRlcnMgYW5kIHZpcnR1 YWwgYWRkcmVzc2VzIGFyZSBkaWZmZXJlbnQsIGJ1dCB0aGUKPiBjb2RlIGJ5dGVzIGFyZSBleGFj dGx5IHRoZSBzYW1lLiBUaGlzIGRvZXNuJ3Qgc2VlbSB2ZXJ5IGxpa2VseSwgc28gSQo+IHdvbmRl ciB3aGV0aGVyIHRoZXJlJ3MgYW4gaXNzdWUgd2l0aCB1cyB3cm9uZ2x5IHJlLXVzaW5nIHByZXZp b3VzbHkKPiBmZXRjaGVkIGluc24gYnl0ZXMuIChPZiBjb3Vyc2UgSSdkIGJlIGhhcHB5IHRvIGJl IHByb3ZlbiB3cm9uZyB3aXRoCj4gdGhpcyBndWVzc2luZywgYnkgeW91IGNoZWNraW5nIHRoZSBp bnZvbHZlZCBiaW5hcnkvaWVzLikKCk9mZnNldCBpcyB0aGUgYWN0dWFsIHZhbHVlIG9mIHRoZSAi b2Zmc2V0IiBwYXJhbWV0ZXIgb2YKaHZtZW11bF9jbXB4Y2hnKCkuIEknbGwgb3V0cHV0IG1vcmUg aW5mbyBhbmQgcmVjaGVjay4KCgpUaGFua3MsClJhenZhbgoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2 ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==