From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH SpectreV1+L1TF v5 9/9] common/memory: block speculative out-of-bound accesses Date: Wed, 06 Feb 2019 08:25:35 -0700 Message-ID: <5C5AFC6F020000780021459B@prv1-mh.provo.novell.com> References: <1548772997-32742-1-git-send-email-nmanthey@amazon.de> <1548772997-32742-10-git-send-email-nmanthey@amazon.de> <5C4ED1D402000078002119E6@prv1-mh.provo.novell.com> <9C03B9BA0200004637554D14@prv1-mh.provo.novell.com> <00FAA7AF020000F8B1E090C7@prv1-mh.provo.novell.com> <20F3469E02000096B1E090C7@prv1-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] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grP56-0004N1-Ty for xen-devel@lists.xenproject.org; Wed, 06 Feb 2019 15:25:44 +0000 In-Reply-To: <20F3469E02000096B1E090C7@prv1-mh.provo.novell.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: nmanthey@amazon.de Cc: Juergen Gross , Tim Deegan , Stefano Stabellini , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Dario Faggioli , Martin Pohlack , Julien Grall , David Woodhouse , "Martin Mazein(amazein)" , xen-devel , Julian Stecklina , Bjoern Doebel List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDI5LjAxLjE5IGF0IDE1OjQzLCA8bm1hbnRoZXlAYW1hem9uLmRlPiB3cm90ZToKPiBA QCAtMzMsMTAgKzM0LDEwIEBAIHVuc2lnbmVkIGxvbmcgX19yZWFkX21vc3RseSBwZHhfZ3JvdXBf dmFsaWRbQklUU19UT19MT05HUygKPiAgCj4gIGJvb2wgX19tZm5fdmFsaWQodW5zaWduZWQgbG9u ZyBtZm4pCj4gIHsKPiAtICAgIHJldHVybiBsaWtlbHkobWZuIDwgbWF4X3BhZ2UpICYmCj4gLSAg ICAgICAgICAgbGlrZWx5KCEobWZuICYgcGZuX2hvbGVfbWFzaykpICYmCj4gLSAgICAgICAgICAg bGlrZWx5KHRlc3RfYml0KHBmbl90b19wZHgobWZuKSAvIFBEWF9HUk9VUF9DT1VOVCwKPiAtICAg ICAgICAgICAgICAgICAgICAgICAgICAgcGR4X2dyb3VwX3ZhbGlkKSk7Cj4gKyAgICByZXR1cm4g ZXZhbHVhdGVfbm9zcGVjKGxpa2VseShtZm4gPCBtYXhfcGFnZSkgJiYKPiArICAgICAgICAgICAg ICAgICAgICAgICAgICAgbGlrZWx5KCEobWZuICYgcGZuX2hvbGVfbWFzaykpICYmCj4gKyAgICAg ICAgICAgICAgICAgICAgICAgICAgIGxpa2VseSh0ZXN0X2JpdChwZm5fdG9fcGR4KG1mbikgLyBQ RFhfR1JPVVBfQ09VTlQsCj4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICBwZHhfZ3JvdXBfdmFsaWQpKSk7CgpPdGhlciB0aGFuIGluIHRoZSBxdWVzdGlvbmFibGUg Z3JhbnQgdGFibGUgY2FzZSwgaGVyZSBJIGFncmVlIHRoYXQKeW91IHdhbnQgdG8gd3JhcCB0aGUg ZW50aXJlIGNvbnN0cnVjdC4gVGhpcyBoYXMgYW4gdW53YW50ZWQgZWZmZWN0CnRob3VnaDogVGhl IHRlc3RfYml0KCkgbWF5IHN0aWxsIGJlIHNwZWN1bGF0ZWQgaW50byB3aXRoIGFuIG91dC1vZi0K Ym91bmRzIG1mbi4gKEFzIG1lbnRpb25lZCBlbHNld2hlcmUsIG9wZXJhdGlvbnMgb24gYml0IGFy cmF5cyBhcmUKYW4gb3BlbiBpc3N1ZSBhbHRvZ2V0aGVyLikgSSB0aGVyZWZvcmUgdGhpbmsgeW91 IHdhbnQgdG8gc3BsaXQgdGhpcyBpbnRvCnR3bzoKCmJvb2wgX19tZm5fdmFsaWQodW5zaWduZWQg bG9uZyBtZm4pCnsKICAgIHJldHVybiBsaWtlbHkoZXZhbHVhdGVfbm9zcGVjKG1mbiA8IG1heF9w YWdlKSkgJiYKICAgICAgICAgICBldmFsdWF0ZV9ub3NwZWMobGlrZWx5KCEobWZuICYgcGZuX2hv bGVfbWFzaykpICYmCiAgICAgICAgICAgICAgICAgICAgICAgICAgIGxpa2VseSh0ZXN0X2JpdChw Zm5fdG9fcGR4KG1mbikgLyBQRFhfR1JPVVBfQ09VTlQsCiAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICBwZHhfZ3JvdXBfdmFsaWQpKSk7Cn0KCkphbgoKCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGlu ZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnBy b2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs