From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: Re: [PATCH v8 1/9] x86/xpti: avoid copying L4 page table contents when possible Date: Sat, 21 Apr 2018 19:11:33 +0200 Message-ID: <7a0d30e0-1c7c-c7f5-6bd0-81709ea3890a@suse.com> References: <20180418083051.8334-1-jgross@suse.com> <20180418083051.8334-2-jgross@suse.com> <5AD76E5A02000078001BC770@suse.com> <35756e6c-dc79-f0a1-df31-bca0495e3352@suse.com> <5AD847BD02000078001BC8D9@suse.com> <58b2d6ba-381d-4f4e-e0bb-bf6281ba6ac6@suse.com> <20180421133208.GA61756@deinos.phlegethon.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1f9w30-0006QZ-VP for xen-devel@lists.xenproject.org; Sat, 21 Apr 2018 17:11:38 +0000 In-Reply-To: <20180421133208.GA61756@deinos.phlegethon.org> Content-Language: de-DE List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Tim Deegan Cc: Andrew Cooper , Jan Beulich , xen-devel List-Id: xen-devel@lists.xenproject.org T24gMjEvMDQvMTggMTU6MzIsIFRpbSBEZWVnYW4gd3JvdGU6Cj4gSGksCj4gCj4gQXQgMDk6NDQg KzAyMDAgb24gMTkgQXByICgxNTI0MTMxMDgwKSwgSnVlcmdlbiBHcm9zcyB3cm90ZToKPj4+PiBT byBlaXRoZXIgSSdtIGFkZGluZyBzb21lIGtpbmQgb2YgbG9ja2luZy9yY3UsIG9yIEknbSBzd2l0 Y2hpbmcgdG8gdXNlCj4+Pj4gSVBJcyBhbmQgYWNjZXNzIHJvb3RfcGd0X2NoYW5nZWQgb25seSBs b2NhbGx5Lgo+Pj4+Cj4+Pj4gRG8geW91IGhhdmUgYW55IHByZWZlcmVuY2U/Cj4+Pgo+Pj4gU2lu Y2UgaXNzdWluZyBhbiBJUEkgaXMganVzdCBhIHNpbmdsZSBjYWxsLCBJJ2QgcHJlZmVyIG5vdCB0 byBoYXZlIG5ldyAobG9ja2luZywKPj4+IHJjdSwgb3Igd2hhdGV2ZXIgZWxzZSkgbG9naWMgYWRk ZWQgaGVyZS4gVW5sZXNzIG9mIGNvdXJzZSBzb21lb25lLCBpbgo+Pj4gcGFydGljdWxhciBUaW0s IHRoaW5rcyBzZW5kaW5nIGFuIElQSSBoZXJlIGlzIGEgcmF0aGVyIGJhZCBpZGVhLgo+IAo+IEFG QUlDUyB5b3UncmUgY2FsbGluZyB0aGlzIGZyb20gc2hhZG93IGNvZGUgd2hlbmV2ZXIgaXQgY2hh bmdlcyBhbgo+IEw0ZSwgc28gSSdkIHJhdGhlciBub3QgaGF2ZSBhbiBJUEkgaGVyZSBpZiB3ZSBk b24ndCBuZWVkIGl0Lgo+IAo+PiBBbm90aGVyIGFsdGVybmF0aXZlIHdvdWxkIGJlIHRvIHBhc3Mg YW5vdGhlciBmbGFnIHRvIHRoZSBjYWxsZXJzIHRvCj4+IHNpZ25hbCB0aGUgbmVlZCBmb3IgYSBm bHVzaC4gVGhpcyB3b3VsZCByZXF1aXJlIHF1aXRlIHNvbWUgbW9kaWZpY2F0aW9ucwo+PiB0byBz aGFkb3cgY29kZSBJJ2QgbGlrZSB0byBhdm9pZCwgdGhvdWdoLiBPVE9IIHRoaXMgd2F5IHdlIGNv dWxkIGNvbWJpbmUKPj4gZmx1c2hpbmcgdGhlIHRsYiBhbmQgdGhlIHJvb3QgcGFnZSB0YWJsZXMu IFRpbSwgYW55IHByZWZlcmVuY2VzPwo+IAo+IFRoaXMgc291bmRzIGEgcHJvbWlzaW5nIGRpcmVj dGlvbiBidXQgaXQgc2hvdWxkIGJlIGRvYWJsIHdpdGhvdXQgbWFqb3IKPiBzdXJnZXJ5IHRvIHRo ZSBzaGFkb3cgY29kZS4gIFRoZSBzaGFkb3cgY29kZSBhbHJlYWR5IGxlYXZlcyBvbGQgc2w0ZXMK PiB2aXNpYmxlIChpbiBUTEJzKSB3aGVuIGl0J3Mgc2FmZSB0byBkbyBzbywgc28gSSB0aGluayB0 aGUgcmlnaHQgcGxhY2UKPiB0byBob29rIHRoaXMgaXMgb24gdGhlIHJlY2VpdmluZyBzaWRlIG9m IHRoZSBUTEIgZmx1c2ggSVBJLiAgSU9XIGFzCj4gbG9uZyBhczoKPiAgLSB5b3UgY29weSB0aGUg TDQgb24gY29udGV4dCBzd2l0Y2g7IGFuZAo+ICAtIHlvdSBjb3B5IGl0IG9uIHRoZSBUTEIgZmx1 c2ggSVBJIGlzIHJlY2VpdmVkCj4gdGhlbiB5b3UgY2FuIHJlbHkgb24gdGhlIGV4aXN0aW5nIFRM QiBmbHVzaCBtZWNoYW5pc21zIHRvIGRvIHdoYXQgeW91IG5lZWQuCj4gQW5kIHNoYWRvdyBkb2Vz bid0IGhhdmUgdG8gYmVoYXZlIGRpZmZlcmVudGx5IGZyb20gJ25vcm1hbCcgUFYgTU0uCgpJdCBp cyBub3Qgc28gZWFzeS4gVGhlIHByb2JsZW0gaXMgdGhhdCBlLmcuIGEgcGFnZSBmYXVsdCB3aWxs IGZsdXNoIHRoZQpUTEIgZW50cnkgZm9yIHRoZSBwYWdlIGluIHF1ZXN0aW9uLCBidXQgaXQgd29u J3QgbGVhZCB0byB0aGUgTDQgdG8gYmUKY29waWVkLiBBZGRpdGlvbmFsbHkgYSBuZXcgaW50cm9k dWNlZCBwYWdlIHJlc3VsdGluZyBpbiBhIG5ldyBMNCBlbnRyeQp3b3VsZCBwb3NzaWJseSBuZXZl ciByZXN1bHQgaW4gcGlja2luZyB1cCB0aGUgbmV3IEw0IHNoYWRvdyBlbnRyeSBhcyBhClRMQiBm bHVzaCB3b3VsZG4ndCBiZSBuZWNlc3NhcnkgYW5kIHRoaXMgd291bGQgcmVzdWx0IGluIGFuIGVu ZGxlc3MKc3RyZWFtIG9mIHBhZ2UgZmF1bHRzLgoKSSB0cmllZCB0aGF0IGFwcHJvYWNoIGJlIGp1 c3QgZG9pbmcgYSBMNCBjb3B5IGluIGNhc2Ugb2YgYSBUTEIgZmx1c2ggSVBJCm9uIGFsbCBhZmZl Y3RlZCBjcHVzIGJ1dCB0aGlzIHdvdWxkbid0IGJlIGVub3VnaC4KClNvIHdoYXQgSSdkIG5lZWQg dG8gZG8gaXMgdG8gc2V0IGEgbmV3IGZsYWcgd2hlbiB3cml0aW5nIGEgTDQgZW50cnkgYW5kCmNh cnJ5IGl0IHVwIHRvIHRoZSBwb2ludCB3aGVyZSB0aGUgVExCIGZsdXNoIGlzIGRvbmUgdG8gYWRk IGEgTDQgY29weS4KQWxsIHRoZSBwbGFjZXMgd2hpY2ggd29uJ3QgZG8gYSBUTEIgZmx1c2ggdG9k YXkgd2lsbCBoYXZlIHRvIGFkZCBvbmUKZm9yIHRoZSBMNCBjb3B5LgoKPiBEbyB5b3UgdGhpbmsg aXQgbmVlZHMgbW9yZSAoaW4gcGFydGljdWxhciB0byBhdm9pZCB0aGUgTDQgY29weSBvbiBUTEIK PiBmbHVzaGVzPykgIFdvdWxkIGEgcGVyLWRvbWFpbiBmbGFnIGJlIGdvb2QgZW5vdWdoIGlmIHBl ci12Y3B1IGlzCj4gZGlmZmljdWx0PwoKCkp1ZXJnZW4KCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZl bEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxt YW4vbGlzdGluZm8veGVuLWRldmVs