From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH SpectreV1+L1TF v5 8/9] common/grant_table: block speculative out-of-bound accesses Date: Wed, 06 Feb 2019 08:53:04 -0700 Message-ID: <5C5B02E00200007800214606@prv1-mh.provo.novell.com> References: <1548772997-32742-1-git-send-email-nmanthey@amazon.de> <1548772997-32742-9-git-send-email-nmanthey@amazon.de> <5C4ED1D402000078002119E6@prv1-mh.provo.novell.com> <9C03B9BA0200004637554D14@prv1-mh.provo.novell.com> <00FAA7AF020000F8B1E090C7@prv1-mh.provo.novell.com> <0104A7AF020000F8B1E090C7@prv1-mh.provo.novell.com> <5C5AF49B0200007800214548@prv1-mh.provo.novell.com> <0f80318d-7454-2055-694c-c22b40a7ddb0@amazon.de> 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 1grPVh-0007I8-8N for xen-devel@lists.xenproject.org; Wed, 06 Feb 2019 15:53:13 +0000 In-Reply-To: <0f80318d-7454-2055-694c-c22b40a7ddb0@amazon.de> 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+IE9uIDA2LjAyLjE5IGF0IDE2OjA2LCA8bm1hbnRoZXlAYW1hem9uLmRlPiB3cm90ZToKPiBP biAyLzYvMTkgMTU6NTIsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+PiBPbiAyOS4wMS4xOSBhdCAx NTo0MywgPG5tYW50aGV5QGFtYXpvbi5kZT4gd3JvdGU6Cj4+PiBAQCAtOTYzLDYgKzk2NSw5IEBA IG1hcF9ncmFudF9yZWYoCj4+PiAgICAgICAgICBQSU5fRkFJTCh1bmxvY2tfb3V0LCBHTlRTVF9i YWRfZ250cmVmLCAiQmFkIHJlZiAlI3ggZm9yIGQlZFxuIiwKPj4+ICAgICAgICAgICAgICAgICAg IG9wLT5yZWYsIHJndC0+ZG9tYWluLT5kb21haW5faWQpOwo+Pj4gIAo+Pj4gKyAgICAvKiBNYWtl IHN1cmUgdGhlIGFib3ZlIGNoZWNrIGlzIG5vdCBieXBhc3NlZCBzcGVjdWxhdGl2ZWx5ICovCj4+ PiArICAgIG9wLT5yZWYgPSBhcnJheV9pbmRleF9ub3NwZWMob3AtPnJlZiwgbnJfZ3JhbnRfZW50 cmllcyhyZ3QpKTsKPj4+ICsKPj4+ICAgICAgYWN0ID0gYWN0aXZlX2VudHJ5X2FjcXVpcmUocmd0 LCBvcC0+cmVmKTsKPj4+ICAgICAgc2hhaCA9IHNoYXJlZF9lbnRyeV9oZWFkZXIocmd0LCBvcC0+ cmVmKTsKPj4+ICAgICAgc3RhdHVzID0gcmd0LT5ndF92ZXJzaW9uID09IDEgPyAmc2hhaC0+Zmxh Z3MgOiAmc3RhdHVzX2VudHJ5KHJndCwgb3AtPnJlZik7Cj4+IEp1c3QgRlRSIC0gdGhpcyBpcyBh IGNhc2Ugd2hlcmUgdGhlIGNoYW5nZSwgYWNjb3JkaW5nIHRvIHByaW9yCj4+IGRpc2N1c3Npb24s IGlzIHByZXR0eSB1bmxpa2VseSB0byBoZWxwIGF0IGFsbC4gVGhlIGNvbXBpbGVyIHdpbGwgaGF2 ZQo+PiBhIGhhcmQgdGltZSByZWFsaXppbmcgdGhhdCBpdCBjb3VsZCBrZWVwIHRoZSByZXN1bHQg aW4gYSByZWdpc3RlciBwYXN0Cj4+IHRoZSBhY3RpdmVfZW50cnlfYWNxdWlyZSgpIGludm9jYXRp b24sIGFzIHRoYXQgLSBkdWUgdG8gdGhlIHNwaW4KPj4gbG9jayBhY3F1aXJlZCB0aGVyZSAtIGFj dHMgYXMgYSBjb21waWxlciBiYXJyaWVyLiBBbmQgbG9va2luZyBhdAo+PiBnZW5lcmF0ZWQgY29k ZSAoZ2NjIDguMikgY29uZmlybXMgdGhhdCB0aGVyZSdzIGEgcmVsb2FkIGZyb20gdGhlCj4+IHN0 YWNrLgo+IEkgY291bGQgY2hhbmdlIHRoaXMgYmFjayB0byBhIHByaW9yIHZlcnNpb24gdGhhdCBw cm90ZWN0cyBlYWNoIHJlYWQKPiBvcGVyYXRpb24uCgpUaGF0IG9yIHVzZSBibG9ja19zcGVjdWxh dGlvbigpIHdpdGggYSBjb21tZW50IGV4cGxhaW5pbmcgd2h5LgoKQWxzbyAtIHdoeSBhcmUgdGhl cmUgbm8gY2hhbmdlcyBhdCBhbGwgdG8gdGhlIHVubWFwX2dyYW50X3JlZigpIC8KdW5tYXBfYW5k X3JlcGxhY2UoKSBjYWxsIHBhdGhzPyBOb3RlIGluIHBhcnRpY3VsYXIgdGhlIHNlY3VyaXR5CnJl bGF0ZWQgY29tbWVudCBuZXh0IHRvIHRoZSBib3VuZHMgY2hlY2sgb2Ygb3AtPnJlZiB0aGVyZS4g SSd2ZQpnb25lIHRocm91Z2ggZWFybGllciByZXZpZXcgcm91bmRzLCBidXQgSSBjb3VsZG4ndCBm aW5kIGFuIGluZGljYXRpb24KdGhhdCB0aGlzIG1pZ2h0IGhhdmUgYmVlbiB0aGUgcmVzdWx0IG9m IHJldmlldyBmZWVkYmFjay4KCkphbgoKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54 ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGlu Zm8veGVuLWRldmVs