From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 1/4] x86/alternatives: correct near branch check Date: Tue, 8 Mar 2016 17:33:57 +0000 Message-ID: <56DF0D05.8000800@citrix.com> References: <56D97AC102000078000D9537@prv-mh.provo.novell.com> <56D97F2102000078000D955D@prv-mh.provo.novell.com> <56DDA1B0.6060002@citrix.com> <56DDB2C002000078000DA128@prv-mh.provo.novell.com> <56DDA81F.2010507@citrix.com> <56DDB8AC02000078000DA163@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: <56DDB8AC02000078000DA163@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: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gMDcvMDMvMTYgMTY6MjEsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDA3LjAzLjE2IGF0 IDE3OjExLCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IE9uIDA3LzAzLzE2 IDE1OjU2LCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+IE9uIDA3LjAzLjE2IGF0IDE2OjQzLCA8 YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+Pj4gT24gMDQvMDMvMTYgMTE6Mjcs IEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+PiBNYWtlIHN1cmUgdGhlIG5lYXIgSk1QL0NBTEwgY2hl Y2sgZG9lc24ndCBjb25zdW1lIHVuaW5pdGlhbGl6ZWQKPj4+Pj4gZGF0YSwgbm90IGV2ZW4gaW4g YSBiZW5pZ24gd2F5LiBBbmQgcmVsYXggdGhlIGxlbmd0aCBjaGVjayBhdCBvbmNlLgo+Pj4+Pgo+ Pj4+PiBTaWduZWQtb2ZmLWJ5OiBKYW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+Cj4+Pj4+ Cj4+Pj4+IC0tLSBhL3hlbi9hcmNoL3g4Ni9hbHRlcm5hdGl2ZS5jCj4+Pj4+ICsrKyBiL3hlbi9h cmNoL3g4Ni9hbHRlcm5hdGl2ZS5jCj4+Pj4+IEBAIC0xNzQsNyArMTc0LDcgQEAgc3RhdGljIHZv aWQgX19pbml0IGFwcGx5X2FsdGVybmF0aXZlcyhzdAo+Pj4+PiAgICAgICAgICBtZW1jcHkoaW5z bmJ1ZiwgcmVwbGFjZW1lbnQsIGEtPnJlcGxhY2VtZW50bGVuKTsKPj4+Pj4gIAo+Pj4+PiAgICAg ICAgICAvKiAweGU4LzB4ZTkgYXJlIHJlbGF0aXZlIGJyYW5jaGVzOyBmaXggdGhlIG9mZnNldC4g Ki8KPj4+Pj4gLSAgICAgICAgaWYgKCAoKmluc25idWYgJiAweGZlKSA9PSAweGU4ICYmIGEtPnJl cGxhY2VtZW50bGVuID09IDUgKQo+Pj4+PiArICAgICAgICBpZiAoIGEtPnJlcGxhY2VtZW50bGVu ID49IDUgJiYgKCppbnNuYnVmICYgMHhmZSkgPT0gMHhlOCApCj4+Pj4+ICAgICAgICAgICAgICAq KHMzMiAqKShpbnNuYnVmICsgMSkgKz0gcmVwbGFjZW1lbnQgLSBpbnN0cjsKPj4+Pj4gIAo+Pj4+ PiAgICAgICAgICBhZGRfbm9wcyhpbnNuYnVmICsgYS0+cmVwbGFjZW1lbnRsZW4sCj4+Pj4+Cj4+ Pj4+Cj4+Pj4+Cj4+Pj4gU3dhcHBpbmcgdGhlIG9yZGVyIGlzIGRlZmluaXRlbHkgYSBnb29kIHRo aW5nLgo+Pj4+Cj4+Pj4gSG93ZXZlciwgcmVsYXhpbmcgdGhlIGxlbmd0aCBjaGVjayBzZWVtcyBs ZXNzIHNvLiAgYEU4IHJlbDMyYCBvciBgRTkKPj4+PiByZWwzMmAgZW5jb2RpbmdzIGFyZSBzdHJp Y3RseSA1IGJ5dGVzIGxvbmcuCj4+Pj4KPj4+PiBUaGVyZSBhcmUgY29tcGxpY2F0aW9ucyB3aXRo IHRoZSBgNjcgRXs4LDl9IHJlbDE2YCBlbmNvZGluZ3MsIGJ1dCB0aG9zZQo+Pj4+IGFyZSBub3Qg Y2F0ZXJlZCBmb3IgYW55d2F5LCBhbmQgdGhlIG1hbnVhbCB3YXJucyBhYm91dCB1bmRlZmluZWQK Pj4+PiBiZWhhdmlvdXIgaWYgdXNlZCBpbiBsb25nIG1vZGUuCj4+Pj4KPj4+PiBXaGF0IGlzIHlv dXIgdXNlY2FzZSBmb3IgcmVsYXhpbmcgdGhlIGNoZWNrPyAgSU1PLCBpZiBpdCBpc24ndCBleGFj dGx5IDUKPj4+PiBieXRlcyBsb25nLCB0aGVyZSBpcyBzb21lIGNvcnJ1cHRpb24gc29tZXdoZXJl IGFuZCB0aGUgcmVsb2NhdGlvbgo+Pj4+IHNob3VsZCd0IGhhcHBlbi4KPj4+IFRoZSByZWxheGF0 aW9uIGlzIHNvbGVseSBiZWNhdXNlIGF0IGxlYXN0IENBTEwgY291bGQgdmFsaWRseQo+Pj4gYmUg Zm9sbG93ZWQgYnkgZnVydGhlciBpbnN0cnVjdGlvbnMuCj4+IEJ1dCB3aXRob3V0IHNjYW5uaW5n IHRoZSBlbnRpcmUgcmVwbGFjZW1lbnQgYnVmZmVyLCB0aGVyZSBtaWdodCBiZSBvdGhlcgo+PiBy ZWxvY2F0aW9ucyBuZWVkaW5nIHRvIGhhcHBlbi4KPj4KPj4gVGhhdCB3b3VsZCByZXF1aXJlIGRl Y29kaW5nIHRoZSBpbnN0cnVjdGlvbnMsIHdoaWNoIGlzIGFuIGV4dHJlbWUgZmFmZi4gCj4+IEl0 IHdvdWxkIGJlIGJldHRlciB0byBsZWF2ZSBpdCBjdXJyZW50bHkgYXMtaXMgdG8gZWZmZWN0aXZl bHkgZGlzYWxsb3cKPj4gbWl4aW5nIGEgam1wL2NhbGwgcmVwbGFjZW1lbnQgd2l0aCBvdGhlciBj b2RlLCB0byBhdm9pZCB0aGUgc3VidGxlCj4+IGZhaWx1cmUgb2YgYSBzZWNvbmQgcmVsb2NhdGlv biBub3QgdGFraW5nIGVmZmVjdAo+IFdlbGwsIHN1Y2ggbWlzc2luZyBmdXJ0aGVyIGZpeHVwIHdv dWxkIGJlIG5vdGljZWQgaW1tZWRpYXRlbHkgYnkKPiBzb21lb25lIHRyeWluZyAodW5sZXNzIHRo ZSBwYXRjaCBjb2RlIHBhdGggbmV2ZXIgZ2V0cyBleGVjdXRlZCkuCj4gV2hlcmVhcyBhIHNpbXBs eSBhZGp1c3RtZW50IHRvIHJlZ2lzdGVyIHN0YXRlIHdvdWxkIHNlZW0gcXVpdGUKPiByZWFzb25h YmxlIHRvIGZvbGxvdyBhIGNhbGwuIFdoaWxlIHJpZ2h0IG5vdyB0aGUgc3Vic2VxdWVudAo+IHBh dGNoZXMgZG9uJ3QgZGVwZW5kIG9uIHRoaXMgYmVpbmcgPj0gb3IgPT0sIEkgdGhpbmsgaXQgd2Fz IHdyb25nCj4gdG8gYmUgPT0gZnJvbSB0aGUgYmVnaW5uaW5nLgo+Cj4gUGx1cyAtIHRoZXJlIGFy ZSBlbmRsZXNzIG90aGVyIHBvc3NpYmlsaXRpZXMgb2YgaW5zdHJ1Y3Rpb25zIG5lZWRpbmcKPiBm aXh1cHMgKG1vc3Qgbm90YWJseSBzdWNoIHdpdGggUklQLXJlbGF0aXZlIG1lbW9yeSBvcGVyYW5k cyksCj4gbm9uZSBvZiB3aGljaCBhcmUgZXZlbiByZW1vdGVseSByZWFzb25hYmxlIHRvIGRlYWwg d2l0aCBoZXJlLgo+IEkuZS4gbmFtZWx5IGluIHRoZSBhYnNlbmNlIG9mIGEgQ0FMTC9KTVAgdGhl IHNhbWUgaXNzdWUgd291bGQKPiBleGlzdCBhbnl3YXksIHdoaWNoIGlzIHdoeSBJJ20gbm90IG92 ZXJseSBjb25jZXJuZWQgb2YgdGhvc2UuCj4gQWxsIHdlIHdhbnQgaXMgYSBzcGVjaWZpYyBzcGVj aWFsIGNhc2UgdG8gYmUgdHJlYXRlZCBjb3JyZWN0bHkuCgpGYWlyIGVub3VnaC4gIFJldmlld2Vk LWJ5OiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPgoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcg bGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2 ZWwK