From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: further post-Meltdown-bad-aid performance thoughts Date: Mon, 22 Jan 2018 17:11:50 +0000 Message-ID: References: <5A6210B502000078001A06A5@prv-mh.provo.novell.com> <6134e80b-8fd0-8a7d-61c8-df5892685c63@citrix.com> <5A622C9602000078001A0847@prv-mh.provo.novell.com> <5A65BC0102000078001A0ED5@prv-mh.provo.novell.com> <5A65F57B02000078001A11B7@prv-mh.provo.novell.com> <6d6c7f70-1702-d9f7-a734-a5da0b71b66f@citrix.com> <5A6627CA02000078001A13A5@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1edfdW-0000eg-Ez for xen-devel@lists.xenproject.org; Mon, 22 Jan 2018 17:11:58 +0000 In-Reply-To: <5A6627CA02000078001A13A5@prv-mh.provo.novell.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: George Dunlap , Andrew Cooper , xen-devel List-Id: xen-devel@lists.xenproject.org T24gMDEvMjIvMjAxOCAwNTowNCBQTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gT24gMjIuMDEu MTggYXQgMTY6MTUsIDxnZW9yZ2UuZHVubGFwQGNpdHJpeC5jb20+IHdyb3RlOgo+PiBPbiAwMS8y Mi8yMDE4IDAxOjMwIFBNLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+IE9uIDIyLjAxLjE4IGF0 IDEzOjMzLCA8Z2VvcmdlLmR1bmxhcEBjaXRyaXguY29tPiB3cm90ZToKPj4+PiBXaGF0IEknbSBw cm9wb3NpbmcgaXMgc29tZXRoaW5nIGxpa2UgdGhpczoKPj4+Pgo+Pj4+ICogV2UgaGF2ZSBhICJn bG9iYWwiIHJlZ2lvbiBvZiBYZW4gbWVtb3J5IHRoYXQgaXMgbWFwcGVkIGJ5IGFsbAo+Pj4+IHBy b2Nlc3NvcnMuICBUaGlzIHdpbGwgY29udGFpbiBldmVyeXRoaW5nIHdlIGNvbnNpZGVyIG5vdCBz ZW5zaXRpdmU7Cj4+Pj4gaW5jbHVkaW5nIFhlbiB0ZXh0IHNlZ21lbnRzLCBhbmQgbW9zdCBkb21h aW4gYW5kIHZjcHUgZGF0YS4gIEJ1dCBpdCB3aWxsCj4+Pj4gKm5vdCogbWFwIGFsbCBvZiBob3N0 IG1lbW9yeSwgbm9yIGhhdmUgYWNjZXNzIHRvIHNlbnNpdGl2ZSBkYXRhLCBzdWNoIGFzCj4+Pj4g dmNwdSByZWdpc3RlciBzdGF0ZS4KPj4+Pgo+Pj4+ICogV2UgaGF2ZSBwZXItY3B1ICJsb2NhbCIg cmVnaW9ucy4gIEluIHRoaXMgcmVnaW9uIHdlIHdpbGwgbWFwLAo+Pj4+IG9uLWRlbWFuZCwgZ3Vl c3QgbWVtb3J5IHdoaWNoIGlzIG5lZWRlZCB0byBwZXJmb3JtIGN1cnJlbnQgb3BlcmF0aW9ucy4K Pj4+PiAoV2UgY2FuIGNvbnNpZGVyIGhvdyBzdHJpY3RseSB3ZSBuZWVkIHRvIHVubWFwIG1lbW9y eSBhZnRlciB1c2luZyBpdC4pCj4+Pj4gV2Ugd2lsbCBhbHNvIG1hcCB0aGUgY3VycmVudCB2Y3B1 J3MgcmVnaXN0ZXJzLgo+Pj4+Cj4+Pj4gKiBPbiBlbnRyeSB0byBhIDY0LWJpdCBQViBndWVzdCwg d2UgZG9uJ3QgY2hhbmdlIHRoZSBtYXBwaW5nIGF0IGFsbC4KPj4+Pgo+Pj4+IE5vdywgbm8gbWF0 dGVyIHdoYXQgdGhlIHNwZWN1bGF0aXZlIGF0dGFjayAtLSBTUDEsIFNQMiwgb3IgU1AzIC0tIGEg dmNwdQo+Pj4+IGNhbiBvbmx5IGFjY2VzcyBpdHMgb3duIFJBTSBhbmQgcmVnaXN0ZXJzLiAgVGhl cmUncyBubyBleHRyYSBvdmVyaGVhZCB0bwo+Pj4+IGNvbnRleHQgc3dpdGNoaW5nIGludG8gb3Ig b3V0IG9mIHRoZSBoeXBlcnZpc29yLgo+Pj4KPj4+IEFuZCB3ZSB3b3VsZCBvcGVuIGJhY2sgdXAg dGhlIFNQMyB2YXJpYW50IG9mIGd1ZXN0IHVzZXIgbW9kZQo+Pj4gYXR0YWNraW5nIGl0cyBvd24g a2VybmVsIGJ5IGdvaW5nIHRocm91Z2ggdGhlIFhlbiBtYXBwaW5ncy4gSQo+Pj4gY2FuJ3QgZXhj bHVkZSB0aGF0IHZhcmlhbnRzIG9mIFNQMSAobGVzcyBsaWtlbHkgU1AyKSBhbGxvd2luZyBpbmRp cmVjdAo+Pj4gZ3Vlc3QtdXNlciAtPiBndWVzdC1rZXJuZWwgYXR0YWNrcyBjb3VsZG4ndCBiZSBm b3VuZC4KPj4KPj4gSG93PyAgWGVuIGRvZXNuJ3QgaGF2ZSB0aGUgZ3Vlc3Qga2VybmVsIG1lbW9y eSBtYXBwZWQgd2hlbiBpdCdzIG5vdAo+PiB1c2luZyBpdC4KPiAKPiBPaCwgc28geW91IG1lYW4g dG8gZG8gYXdheSB3aXRoIHRoZSBkaXJlY3QgbWFwIGFsdG9nZXRoZXI/CgpZZXMuIDotKSAgVGhl IGRpcmVjdCBtYXAgaXMgKnRoZSogY29yZSByZWFzb24gd2h5IHRoZSBTUCoKdnVsbmVyYWJpbGl0 aWVzIGFyZSBzbyBkYW5nZXJvdXMuICBJZiB0aGUgKm9ubHkqIHRoaW5nIHdlIGRpZCB3YXMgZ2V0 CnJpZCBvZiB0aGUgZGlyZWN0IG1hcCwgd2l0aG91dCBkb2luZyAqYW55dGhpbmcqIGVsc2UsIHdl IHdvdWxkIGFsbW9zdAplbnRpcmVseSBtaXRpZ2F0ZSB0aGUgZWZmZWN0IG9mIGFsbCBvZiB0aGUg YXR0YWNrcy4KCiAtR2VvcmdlCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9q ZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVu LWRldmVs