From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 1/3] x86/pv: Introduce and use x86emul_read_dr() Date: Mon, 16 Apr 2018 13:18:09 +0100 Message-ID: References: <1523552156-20866-1-git-send-email-andrew.cooper3@citrix.com> <1523552156-20866-2-git-send-email-andrew.cooper3@citrix.com> <5AD06AEC02000078001BAF9A@prv1-mh.provo.novell.com> <5e53ca51-416e-77c3-9429-ae485d87cc77@citrix.com> <5AD0970F02000078001BB0B3@prv1-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <5AD0970F02000078001BB0B3@prv1-mh.provo.novell.com> Content-Language: en-GB List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: Juergen Gross , Xen-devel , Wei Liu , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org T24gMTMvMDQvMTggMTI6MzksIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDEzLjA0LjE4IGF0 IDEzOjE3LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IE9uIDEzLzA0LzE4 IDA5OjMxLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+IE9uIDEyLjA0LjE4IGF0IDE4OjU1LCA8 YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+Pj4gZG9fZ2V0X2RlYnVncmVnKCkg aGFzIHNldmVyYWwgYnVnczoKPj4+Pgo+Pj4+ICAqIFRoZSAlY3I0LmRlIGNvbmRpdGlvbiBpcyBp bnZlcnRlZC4gICVkcjQvNSBzaG91bGQgYmUgYWNjZXNzaWJsZSBvbmx5IHdoZW4KPj4+PiAgICAl Y3I0LmRlIGlzIGRpc2FibGVkLgo+Pj4+ICAqIFdoZW4gJWNyNC5kZSBpcyBkaXNhYmxlZCwgZW11 bGF0aW9uIHNob3VsZCB5aWVsZCAjVUQgcmF0aGVyIHRoYW4gY29tcGxldGUKPj4+PiAgICB3aXRo IHplcm8uCj4+Pj4gICogVXNpbmcgLUVJTlZBTCBmb3IgZXJyb3JzIGlzIGEgYnJva2VuIEFCSSwg YXMgaXQgb3ZlcmxhcHMgd2l0aCB2YWxpZCB2YWx1ZXMKPj4+PiAgICBuZWFyIHRoZSB0b3Agb2Yg dGhlIGFkZHJlc3Mgc3BhY2UuCj4+Pj4KPj4+PiBJbnRyb2R1Y2UgYSBjb21tb24geDg2ZW11bF9y ZWFkX2RyKCkgaGFuZGxlciAoYXMgd2Ugd2lsbCBldmVudHVhbGx5IHdhbnQgdG8KPj4+PiBhZGQg SFZNIHN1cHBvcnQpIHdoaWNoIHNlcGFyYXRlcyBpdHMgc3VjY2Vzcy9mYWlsdXJlIGluZGljYXRp b24gZnJvbSB0aGUgZGF0YQo+Pj4+IHZhbHVlLCBhbmQgaGF2ZSBkb19nZXRfZGVidWdyZWcoKSBj YWxsIGludG8gdGhlIGhhbmRsZXIuCj4+PiBUaGUgSFZNIHBhcnQgaGVyZSBpcyBzb3J0IG9mIHF1 ZXN0aW9uYWJsZSBiZWNhdXNlIG9mIHlvdXIgdXNlIG9mCj4+PiBjdXJyLT5hcmNoLnB2X3ZjcHUu Y3RybHJlZ1s0XS4KPj4gVGhhdCBpcyB3aGF0IHRoZSAibmVlZHMgZnVydGhlciBwbHVtYmluZyIg cmVmZXJzIHRvLCBhcyB3ZWxsIGFzIG5lZWRpbmcKPj4gaG9va3MgdG8gZ2V0L21vZGlmeSAlZHI2 LzcgZnJvbSB0aGUgVk1DQi9WTUNTLgo+Pgo+PiBIb3dldmVyLCB3ZSBhcmUgZ2FpbmluZyBhbiBp bmNyZWFzaW5nIGFtb3VudCBvZiBjb21tb24geDg2IGNvZGUgd2hpY2gKPj4gbmVlZHMgdG8gcmVh ZCBjb250cm9sIHJlZ2lzdGVyIHZhbHVlcywgYW5kIEkndmUgZ290IGEgcGxhbiB0byByZWZhY3Rv cgo+PiBhY3Jvc3MgdGhlIGJvYXJkIHRvIHYtPmFyY2guY3I0IChhbmQgc2ltaWxhcikuICBUaGVy ZSBpcyBubyBwb2ludCBoYXZpbmcKPj4gaWRlbnRpY2FsIGluZm9ybWF0aW9uIGluIGRpZmZlcmVu dCBwYXJ0cyBvZiBzdWItdW5pb25zLgo+IEkgYWdyZWUuCj4KPj4+IFRoaXMgaXMgYXBwcm9wcmlh dGUgZm9yIHRoZSBOVUxMIGN0eHQgY2FzZSwKPj4+IGJ1dCBpdCdzIGFscmVhZHkgYSBsYXllcmlu ZyB2aW9sYXRpb24gZm9yIHRoZSB1c2Ugb2YgdGhlIGZ1bmN0aW9uIGluCj4+PiBwcml2X29wX29w cywgd2hlcmUgdGhlIHJlYWRfY3IoKSBob29rIHNob3VsZCBiZSB1c2VkIGluc3RlYWQuCj4+IEht bSAtIGRvaW5nIHRoaXMsIHdoaWxlIHByb2JhYmx5IHRoZSBiZXR0ZXIgbG9uZyB0ZW1yIGNvdXJz ZSBvZiBhY3Rpb24sCj4+IHdvdWxkIHJlcXVpcmUgcGFzc2luZyB0aGUgb3BzIHN0cnVjdHVyZXMg ZG93biBpbnRvIHRoZSBjYWxsYmFja3MuCj4gVGhhdCBkb2Vzbid0IHNvdW5kIGxpa2UgYSBwcm9i bGVtLCB0aG91Z2ggLSB0aGUgaHlwZXJjYWxsIHBhdGggd291bGQKPiBwYXNzIE5VTEwgdGhlcmUg YXMgd2VsbC4KPgo+Pj4+ICtpbnQgeDg2ZW11bF9yZWFkX2RyKHVuc2lnbmVkIGludCByZWcsIHVu c2lnbmVkIGxvbmcgKnZhbCwKPj4+PiArICAgICAgICAgICAgICAgICAgICBzdHJ1Y3QgeDg2X2Vt dWxhdGVfY3R4dCAqY3R4dCkKPj4+PiArewo+Pj4+ICsgICAgc3RydWN0IHZjcHUgKmN1cnIgPSBj dXJyZW50Owo+Pj4+ICsKPj4+PiArICAgIC8qIEhWTSBzdXBwb3J0IHJlcXVpcmVzIGEgYml0IG1v cmUgcGx1bWJpbmcgYmVmb3JlIGl0IHdpbGwgd29yay4gKi8KPj4+PiArICAgIEFTU0VSVChpc19w dl92Y3B1KGN1cnIpKTsKPj4+PiArCj4+Pj4gKyAgICBzd2l0Y2ggKCByZWcgKQo+Pj4+ICsgICAg ewo+Pj4+ICsgICAgY2FzZSAwIC4uLiAzOgo+Pj4+ICsgICAgY2FzZSA2Ogo+Pj4+ICsgICAgICAg ICp2YWwgPSBjdXJyLT5hcmNoLmRlYnVncmVnW3JlZ107Cj4+Pj4gKyAgICAgICAgYnJlYWs7Cj4+ Pj4gKwo+Pj4+ICsgICAgY2FzZSA3Ogo+Pj4+ICsgICAgICAgICp2YWwgPSAoY3Vyci0+YXJjaC5k ZWJ1Z3JlZ1s3XSB8Cj4+Pj4gKyAgICAgICAgICAgICAgICBjdXJyLT5hcmNoLmRlYnVncmVnWzVd KTsKPj4+PiArICAgICAgICBicmVhazsKPj4+PiArCj4+Pj4gKyAgICBjYXNlIDQgLi4uIDU6Cj4+ Pj4gKyAgICAgICAgaWYgKCAhKGN1cnItPmFyY2gucHZfdmNwdS5jdHJscmVnWzRdICYgWDg2X0NS NF9ERSkgKQo+Pj4+ICsgICAgICAgIHsKPj4+PiArICAgICAgICAgICAgKnZhbCA9IGN1cnItPmFy Y2guZGVidWdyZWdbcmVnICsgMl07Cj4+Pj4gKyAgICAgICAgICAgIGJyZWFrOwo+Pj4gT25jZSBh dCBpdCwgd291bGRuJ3QgeW91IGJldHRlciBhbHNvIGZpeCB0aGUgbWlzc2luZyBPUmluZyBvZiBb NV0gaW50byB0aGUgRFI3IChyZWFsbHkKPj4+IERSNSkgdmFsdWUgaGVyZT8KPj4gWzVdIGlzIHpl cm8gd2hlbiAlY3I0LmRlIGlzIGNsZWFyIChzdWJqZWN0IHRvIGEgYnVnZml4IGluIHRoZSBzdWJz ZXF1ZW50Cj4+IHBhdGNoKSwgYXMgSU8gYnJlYWtwb2ludHMgYXJlIG9ubHkgdmFsaWQgdG8gdXNl IHdoZW4gJWNyNC5kZSBpcyBlbmFibGVkLgo+IE9oLCByaWdodCB5b3UgYXJlLgoKU28sIGFyZSB5 b3VyIGNvbW1lbnRzIHN1aXRhYmx5IGFkZHJlc3NlZD/CoCBJdCBpcyB1bmNsZWFyIHdoZXRoZXIg eW91CndhbnQgYW55IGNoYW5nZXMgdG8gYmUgbWFkZS4KCn5BbmRyZXcKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QK WGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5v cmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=