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 08:46:55 -0600 Message-ID: <58DE87FF020000780014B66E@prv-mh.provo.novell.com> References: <1490361899-18303-1-git-send-email-rcojocaru@bitdefender.com> <58DA510A0200007800148F6F@prv-mh.provo.novell.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> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <2e799e78-9a6b-cf92-a98d-009920258f77@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+IE9uIDMxLjAzLjE3IGF0IDExOjU2LCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3Jv dGU6Cj4gT24gMDMvMzEvMjAxNyAxMDozNCBBTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+IE9u IDMxLjAzLjE3IGF0IDA4OjE3LCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3JvdGU6Cj4+ PiBPbiAwMy8zMC8yMDE3IDA2OjQ3IFBNLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4gU3BlYWtp bmcgb2YgZW11bGF0ZWQgTU1JTywgSSd2ZSBnb3QgdGhpcyB3aGVuIHRoZSBndWVzdCB3YXMgY3Jh c2hpbmcKPj4+Pj4gaW1tZWRpYXRlbHkgKHByZSBSRVRSWSBsb29wKToKPj4+Pj4KPj4+Pj4gIE1N SU8gZW11bGF0aW9uIGZhaWxlZDogZDN2OCAzMmJpdCBAIDAwMDg6ODI2NzlmM2MgLT4gZjAgMGYg YmEgMzAgMDAgNzIKPj4+Pj4gMDcgOGIgY2IgZTggZGEgNGIgZmYgZmYgOGIgNDUKPj4+Pgo+Pj4+ IFRoYXQncyBhIEJUUiwgd2hpY2ggd2Ugc2hvdWxkIGJlIGVtdWxhdGluZyBmaW5lLiBNb3JlIGlu Zm9ybWF0aW9uCj4+Pj4gd291bGQgbmVlZCB0byBiZSBjb2xsZWN0ZWQgdG8gaGF2ZSBhIGNoYW5j ZSB0byB1bmRlcnN0YW5kIHdoYXQKPj4+PiBtaWdodCBiZSBnb2luZyBvbmUgKGZpcnN0IG9mIGFs bCB0aGUgdmlydHVhbCBhbmQgcGh5c2ljYWwgbWVtb3J5Cj4+Pj4gYWRkcmVzcyB0aGlzIHdhcyB0 cnlpbmcgdG8gYWN0IG9uKS4KPj4+Cj4+PiBSaWdodCwgdGhlIEJUUiBwYXJ0IHNob3VsZCBiZSBm aW5lLCBidXQgSSB0aGluayB0aGUgTE9DSyBwYXJ0IGlzIHdoYXQncwo+Pj4gY2F1c2luZyB0aGUg aXNzdWUuIEkndmUgZG9uZSBhIGZldyBtb3JlIHRlc3QgcnVucyB0byBzZWUgd2hhdCByZXR1cm4K Pj4+IFJFVFJZIChkdW1waW5nIHRoZSBpbnN0cnVjdGlvbiB3aXRoIGFuICIocikiIHByZWZpeCB0 byBkaXN0aW5ndWlzaCBmcm9tCj4+PiB0aGUgVU5IQU5ETEVBQkxFIGR1bXApLCBhbmQgYSBjb3Vw bGUgb2YgaW5zdHJ1Y3Rpb25zIHJldHVybiBSRVRSWSAoQlRSCj4+PiBhbmQgWEFERCwgYm90aCBM T0NLLXByZWZpeGVkLCB3aGljaCBtZWFucyB0aGV5IG5vdyBpbnZvbHZlIENNUFhDSEcKPj4+IGhh bmRsZXIsIHdoaWNoIHByZXN1bWFibHkgbm93IGZhaWxzIC0gcG9zc2libHkgc2ltcGx5IGJlY2F1 c2UgaXQncwo+Pj4gYWx3YXlzIExPQ0tlZCBpbiBteSBwYXRjaCk6Cj4+IAo+PiBXZWxsLCBhbGwg b2YgdGhhdCBsb29rcyB0byBiZSBleHBlY3RlZCBiZWhhdmlvci4gSSdtIGFmcmFpZCBJIGRvbid0 IHNlZQo+PiBob3cgdGhpcyBpbmZvcm1hdGlvbiBoZWxwcyB1bmRlcnN0YW5kaW5nIHRoZSBNTUlP IGVtdWxhdGlvbiBmYWlsdXJlCj4+IGFib3ZlLgo+IAo+IEkndmUgbWFuYWdlZCB0byBvYnRhaW4g dGhpcyBsb2cgb2YgZW11bGF0aW9uIGVycm9yczoKPiBodHRwczovL3Bhc3RlYmluLmNvbS9Fc3kx U2tIeCAKPiAKPiBUaGUgInZpcnR1YWwgYWRkcmVzcyIgbGluZXMgdGhhdCBhcmUgbm90IGZvbGxv d2VkIGJ5IGFueSAiTWVtIGV2ZW50Igo+IGxpbmUgY29ycmVzcG9uZCB0byBDTVhDSEdfRkFJTEVE IHJldHVybiBjb2Rlcy4KPiAKPiBUaGUgdmVyeSBsYXN0IGxpbmUgaXMgYSBNTUlPIGVtdWxhdGlv biBmYWlsZWQuCj4gCj4gSXQncyBwcm9iYWJseSBpbXBvcnRhbnQgdGhhdCB0aGlzIGhhcHBlbnMg d2l0aCB0aGUgbW9kZWwgd2hlcmUKPiBodm1fZW11bGF0ZV9vbmVfdm1fZXZlbnQoKSBkb2VzIF9u b3RfIHJlLXRyeSB0aGUgZW11bGF0aW9uIHVudGlsIGl0Cj4gc3VjY2VlZHMuIFRoZSBvdGhlciBt b2RlbCBhbGxvd3MgbWUgdG8gZ28gZnVydGhlciB3aXRoIHRoZSBndWVzdCwgYnV0Cj4gZXZlbnR1 YWxseSBJIGdldCB0aW1lb3V0LXJlbGF0ZWQgQlNPRHMgb3IgdGhlIGd1ZXN0IGJlY29tZXMgdW5y ZXNwb25zaXZlLgoKSW50ZXJlc3RpbmcuIFlvdSBkaWRuJ3QgY2xhcmlmeSB3aGF0IHRoZSBwcmlu dGVkICJvZmZzZXQiIHZhbHVlcyBhcmUsCmFuZCBpdCBkb2Vzbid0IGxvb2sgbGlrZSB0aGVzZSBo YXZlIGFueSBjb3JyZWxhdGlvbiB3aXRoIHRoZSB1bmRlcmx5aW5nCihndWVzdCkgcGh5c2ljYWwg YWRkcmVzcywgd2hpY2ggd2Ugd291bGQgYWxzbyB3YW50IHRvIHNlZS4gQW5kIHRoZW4KaXQgc3Ry aWtlcyBtZSBhcyBvZGQgdGhhdCBpbiB0aGVzZSBsYXN0IGxpbmVzCgooWEVOKSBNZW0gZXZlbnQg KFJFVFJZKSBlbXVsYXRpb24gZmFpbGVkOiBkNXY4IDMyYml0IEAgMDAwODo4MjZiYjg2MSAtPiBm MCAwZiBiYSAzMCAwMCA3MiAwNyA4YiBjYiBlOCBkYSA0YiBmZiBmZiA4YiA0NQooWEVOKSB2aXJ0 dWFsIGFkZHJlc3M6IDB4ZmZkMDgwZjAsIG9mZnNldDogNDI5MTg1NDU3NgooWEVOKSBNTUlPIGVt dWxhdGlvbiBmYWlsZWQ6IGQ1djggMzJiaXQgQCAwMDA4OjgyNjU1ZjNjIC0+IGYwIDBmIGJhIDMw IDAwIDcyIDA3IDhiIGNiIGU4IGRhIDRiIGZmIGZmIDhiIDQ1Cgp0aGUgaW5zdHJ1Y3Rpb24gcG9p bnRlcnMgYW5kIHZpcnR1YWwgYWRkcmVzc2VzIGFyZSBkaWZmZXJlbnQsIGJ1dCB0aGUKY29kZSBi eXRlcyBhcmUgZXhhY3RseSB0aGUgc2FtZS4gVGhpcyBkb2Vzbid0IHNlZW0gdmVyeSBsaWtlbHks IHNvIEkKd29uZGVyIHdoZXRoZXIgdGhlcmUncyBhbiBpc3N1ZSB3aXRoIHVzIHdyb25nbHkgcmUt dXNpbmcgcHJldmlvdXNseQpmZXRjaGVkIGluc24gYnl0ZXMuIChPZiBjb3Vyc2UgSSdkIGJlIGhh cHB5IHRvIGJlIHByb3ZlbiB3cm9uZyB3aXRoCnRoaXMgZ3Vlc3NpbmcsIGJ5IHlvdSBjaGVja2lu ZyB0aGUgaW52b2x2ZWQgYmluYXJ5L2llcy4pCgpKYW4KCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZl bEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK