From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH SpectreV1+L1TF v4 03/11] config: introduce L1TF_LFENCE option Date: Fri, 01 Feb 2019 01:02:54 -0700 Message-ID: <5C53FD2E0200007800213075@prv1-mh.provo.novell.com> References: <1548244285-30813-1-git-send-email-nmanthey@amazon.de> <1548244285-30813-4-git-send-email-nmanthey@amazon.de> <5C4AE16D0200007800211142@prv1-mh.provo.novell.com> <40beffd4-89dc-35ad-2631-2695ecd373c6@citrix.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 1gpTmw-0005uT-Nn for xen-devel@lists.xenproject.org; Fri, 01 Feb 2019 08:03:02 +0000 In-Reply-To: <40beffd4-89dc-35ad-2631-2695ecd373c6@citrix.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Andrew Cooper Cc: Stefano Stabellini , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Tim Deegan , Ian Jackson , Dario Faggioli , Martin Pohlack , Julien Grall , nmanthey@amazon.de, "Martin Mazein(amazein)" , xen-devel , Julian Stecklina , David Woodhouse , Bjoern Doebel List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDMxLjAxLjE5IGF0IDIzOjM5LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3Jv dGU6Cj4gT24gMjUvMDEvMjAxOSAxMDoxNCwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+IE9uIDI0 LjAxLjE5IGF0IDIyOjI5LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+PiBX b3JzZSBpcyB0aGUgImV2YWx1YXRlIGNvbmRpdGlvbiwgc3Rhc2ggcmVzdWx0LCBmZW5jZSwgdXNl IHZhcmlhYmxlIgo+Pj4gb3B0aW9uLCB3aGljaCBpcyBhbG1vc3QgY29tcGxldGVseSB1c2VsZXNz LiAgSWYgeW91IHdvcmsgb3V0IHRoZQo+Pj4gcmVzdWx0aW5nIGluc3RydWN0aW9uIHN0cmVhbSwg eW91J2xsIGhhdmUgYSBjb25kaXRpb25hbCBleHByZXNzaW9uCj4+PiBjYWxjdWxhdGVkIGRvd24g aW50byBhIHJlZ2lzdGVyLCB0aGVuIGEgZmVuY2UsIHRoZW4gYSB0ZXN0IHJlZ2lzdGVyIGFuZAo+ Pj4gY29uZGl0aW9uYWwganVtcCBpbnRvIG9uZSBvZiB0d28gYmFzaWMgYmxvY2tzLiAgVGhpcyB0 YWtlcyB0aGUgcGVyZiBoaXQsCj4+PiBhbmQgZG9lc24ndCBwcm90ZWN0IGVpdGhlciBvZiB0aGUg YmFzaWMgYmxvY2tzIGZvciBzcGVjdWxhdGl2ZQo+Pj4gbWlzLWV4ZWN1dGlvbi4KPj4gSG93IGRv ZXMgaXQgbm90IHByb3RlY3QgYW55dGhpbmc/IEl0IHNocmlua3MgdGhlIHNwZWN1bGF0aW9uIHdp bmRvdwo+PiB0byBqdXN0IHRoZSByZWdpc3RlciB0ZXN0IGFuZCBjb25kaXRpb25hbCBicmFuY2gs Cj4gCj4gQSBzcGVjdWxhdGlvbiB3aW5kb3cgc3RhcnRzIGF0IGEgbnVtYmVyIG9mIGFyYml0cmFy eSBwb2ludHMsIGFuZCBwZXJzaXN0Cj4gdW50aWwgdGhlIHByb2Nlc3NvciBoYXMgY29uZmlybWVk IHRoZSBzcGVjdWxhdGlvbiBwcmVjb25kaXRpb24gd2FzIHRydWUKPiBvciBmYWxzZS4gIFRoZXJl IGNhbiBiZSBtdWx0aXBsZSBvdmVybGFwcGluZyBzcGVjdWxhdGl2ZSB3aW5kb3dzIG9wZW4gYXQK PiBhIHNpbmdsZSB0aW1lLgo+IAo+PiB3aGljaCBvdWdodCB0byBiZQo+PiBmYXIgc21hbGxlciB0 aGFuIHRoYXQgYmVoaW5kIGEgbWVtb3J5IGFjY2VzcyB3aGljaCBmYWlscyB0byBoaXQgYW55Cj4+ IG9mIHRoZSBjYWNoZXMgKGFuZCBwZXJoYXBzIGV2ZW4gYW55IG9mIHRoZSBUTEJzKS4gVGhpcyBp cyB0aGUgbW9yZQo+PiB0aGF0IExGRU5DRSBkb2VzIHNwZWNpZmljYWxseSBub3QgcHJldmVudCBp bnNuIGZldGNoaW5nIGZyb20KPj4gY29udGludWluZy4KPiAKPiBJJ20gYWZyYWlkIHRoYXQgaXNu J3QgcmVsZXZhbnQuCj4gCj4gRm9yIHRoZSBhdHRhY2sgZGVzY3JpYmVkIGluIHRoaXMgc2VyaWVz LCB0aGUgc3BlY3VsYXRpb24gd2luZG93IHdoaWNoCj4gbWF0dGVycyBzdGFydHMgd2l0aCBhIGNv bmRpdGlvbmFsIGp1bXAuICBJbiB0aGlzIHNjZW5hcmlvLCB0aGUgZmFjdCB0aGF0Cj4geW91IGhh dmUgc3Rhc2hlZCB0aGUgdmFsdWUgYW5kIGlzc3VlZCBhIGZlbmNlIGRvZXNuJ3Qgc3RvcCBhbiBh dHRhY2tlcgo+IGZyb20gY29udHJvbGxpbmcgdGhlIGNvbmRpdGlvbmFsIGp1bXAuCj4gCj4gVGhl IGxmZW5jZSBkb2Vzbid0IGludGVyYWN0IHdpdGggdGhlIGJyYW5jaCBwcmVkaWN0b3IuICBBbnkg cG9pc29uZWQKPiBwcmVkaWN0aW9ucyB3aWxsIHN1cnZpdmUuCj4gCj4gQXMgYSByZXN1bHQsIHRo ZSBvbmx5IHNhZmUgY291cnNlIG9mIGFjdGlvbiBpcyB0byBsZXQgdGhlIHByb2Nlc3Nvcgo+IGZv bGxvdyB0aGUgcHJlZGljdGlvbiwgKnRoZW4qIHdhaXQgZm9yIHNwZWN1bGF0aW9uIHRvIGNhdGNo IHVwIHdpdGgKPiByZWFsaXR5IGFuZCBzZWUgd2hldGhlciB0aGUgcHJlZGljdGlvbiB3YXMgY29y cmVjdC4gIEFzIHN1Y2gsIGNvZGUgaXMKPiBvbmx5IHNhZmUgd2hlbiB0aGUgZmVuY2UgaXMgYXQg dGhlIGhlYWQgb2YgYm90aCBiYXNpYyBibG9ja3MuCj4gCj4+IFRoYXQgc2FpZCBJIGFncmVlIHRo YXQgdGhlIExGRU5DRSB3b3VsZCBiZXR0ZXIgc2l0IGJldHdlZW4gdGhlCj4+IHJlZ2lzdGVyIHRl c3QgYW5kIHRoZSBjb25kaXRpb25hbCBicmFuY2gsIGJ1dCBhcyB3ZSd2ZSBzYWlkIHNvIG1hbnkK Pj4gdGltZXMgYmVmb3JlIC0gdGhpcyBjYW4ndCBiZSBhY2hpZXZlZCB3aXRob3V0IGNvbXBpbGVy IHN1cHBvcnQuCj4gCj4gSXQgYWxzbyBkb2Vzbid0IGZpeCB0aGUgcHJvYmxlbS4KPiAKPiBCb3Ro IG9mIHRoZXNlIGV4YW1wbGVzIGRvIG5hcnJvdyB0aGUgc3BlY3VsYXRpb24gdG8ganVzdCBoYXZp bmcgZWFjaAo+IGJhc2ljIGJsb2NrIGVudGVyZWQgd2l0aCBlYWNoIG90aGVycyBsZWdpdGltYXRl IGVudHJ5IGNvbmRpdGlvbiwgYnV0IHRoZQo+IGZvbGxvd2luZyBjb2RlIHNhbXBsZSBpcyBzdGls bCB2dWxuZXJhYmxlIHRvIGxlYWthZ2UgdW5kZXIgdGhlc2UgdHdvCj4gcmVsYXRlZCBzdHJhdGVn aWVzLgo+IAo+IGludCBmb28oaW50IGEsIGludCBiLCBpbnQgYykKPiB7Cj4gICAgIGlmICggZXZh bF9ub3NwZWMoYSkgKQo+ICAgICAgICAgcmV0dXJuIGFycmF5X2JbYl07Cj4gICAgIGVsc2UKPiAg ICAgICAgIHJldHVybiBhcnJheV9jW2NdOwo+IH0KCkFsbCBmaW5lLCBidXQgYXMgeW91IHNheSwg c3BlY3VsYXRpb24gc3RhcnRzIGF0IHRoZSBjb25kaXRpb25hbApicmFuY2guIElmIHRoZSBMRkVO Q0Ugc2l0cyBpbW1lZGlhdGVseSBhaGVhZCBvZiBpdCwgaG93IGZhciBjYW4Kc3BlY3VsYXRpb24g YWN0dWFsbHkgbWFrZSBpdCBiZWZvcmUgaXQgZ2V0cyBjYW5jZWxlZD8gSSdtIG5vdApwdXR0aW5n IHVuZGVyIHF1ZXN0aW9uIHRoYXQgdGhlIGJlc3Qgd2UgY2FuIGRvIGlzIGFkZGluZyBvbmUKZmVu Y2Ugb24gZWFjaCBzaWRlLCBidXQgYXMgd2UncmUgYW55d2F5IGRlYmF0aW5nIGhvdyB0bwpiYWxh bmNlIGFkZGVkIHNlY3VyaXR5IHZzIGxvc3QgcGVyZm9ybWFuY2UsIEkgcmVtYWluIG5vdCBmdWxs eQpjb252aW5jZWQgdGhhdCB0aGlzIGlzbid0IGFuIG9wdGlvbiBzb21lb25lIG1heSB3YW50IHRv IHBpY2suCgo+PiBUaGVuIGFnYWluLCBmb2xsb3dpbmcgYW4gZWFybGllciByZXBseSBvZiBtaW5l IG9uIGFub3RoZXIgc3ViLQo+PiB0aHJlYWQsIG5vdGhpbmcgcmVhbGx5IHByZXZlbnRzIHRoZSBj b21waWxlciBmcm9tIG1vdmluZyBhaGVhZAo+PiBhbmQgZm9sZGluZyB0aGUgdHdvIExGRU5DRXMg b2YgdGhlICJib3RoIGJyYW5jaGVzIiBtb2RlbCBpbnRvCj4+IG9uZS4gSXQganVzdCBzbyBoYXBw ZW5zIHRoYXQgYXBwYXJlbnRseSByaWdodCBub3cgdGhpcyBuZXZlcgo+PiBvY2N1cnMgKGFzc3Vt aW5nIE5vcmJlcnQgaGFzIGRvbmUgZnVsbCBnZW5lcmF0ZWQgY29kZSBhbmFseXNpcwo+PiB0byBj b25maXJtIHRoZSBpbnRlbmRlZCBwbGFjZW1lbnQpLgo+IAo+IEZvbGxvd2luZyBvbiBmcm9tIHRo YXQgb3RoZXIgdGhyZWFkLCBldmFsX25vc3BlYygpIGlzIG9ubHkgdXNlZnVsIGlmIHdlCj4gY2Fu IGd1YXJhbnRlZSB0aGF0IGl0IHBsYWNlcyBmZW5jZXMgYXQgdGhlIGhlYWQgb2YgZWFjaCBiYXNp YyBibG9jaywKPiByYXRoZXIgdGhhbiBlbHNld2hlcmUuCgpXZSBjbGVhcmx5IGFncmVlIG9uIHRo aXMgYXNwZWN0LiBUaGUgcXVlc3Rpb25hYmxlIHBvaW50IHRob3VnaAppc24ndCB3aGF0IGlzIHVz ZWZ1bCwgYnV0IHdoYXQgdGhlIGNvbXBpbGVyIG1pZ2h0IHBvc3NpYmx5IGRvIHdpdGgKdGhlIGNv bnN0cnVjdHMgd2UgYWRkLgoKSmFuCgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhl bnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5m by94ZW4tZGV2ZWw=