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spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1isMNJ-0004Bn-5o; Fri, 17 Jan 2020 07:49:01 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1isMNH-0004Bi-J5 for xen-devel@lists.xenproject.org; Fri, 17 Jan 2020 07:48:59 +0000 X-Inumbo-ID: d188e048-38fd-11ea-a985-bc764e2007e4 Received: from deinos.phlegethon.org (unknown [2001:41d0:8:b1d7::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id d188e048-38fd-11ea-a985-bc764e2007e4; Fri, 17 Jan 2020 07:48:58 +0000 (UTC) Received: from tjd by deinos.phlegethon.org with local (Exim 4.92.3 (FreeBSD)) (envelope-from ) id 1isMND-000NPr-Do; Fri, 17 Jan 2020 07:48:55 +0000 Date: Fri, 17 Jan 2020 07:48:55 +0000 From: Tim Deegan To: Roger Pau =?iso-8859-1?Q?Monn=E9?= Message-ID: <20200117074855.GB89813@deinos.phlegethon.org> References: <20200115111601.GN11738@Air-de-Roger> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200115111601.GN11738@Air-de-Roger> User-Agent: Mutt/1.11.1 (2018-12-01) X-SA-Known-Good: Yes X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tim@xen.org X-SA-Exim-Scanned: No (on deinos.phlegethon.org); SAEximRunCond expanded to false Subject: Re: [Xen-devel] Issues/improvements performing flush of guest TLBs X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Kevin Tian , Jan Beulich , Wei Liu , George Dunlap , Andrew Cooper , Jun Nakajima , xen-devel@lists.xenproject.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" SGksCgpBdCAxMjoxNiArMDEwMCBvbiAxNSBKYW4gKDE1NzkwOTA1NjEpLCBSb2dlciBQYXUgTW9u bsOpIHdyb3RlOgo+ICAtIFNoYWRvdzogaXQncyBub3QgY2xlYXIgdG8gbWUgZXhhY3RseSB3aGlj aCBwYXJ0cyBvZiBzaF91cGRhdGVfY3IzCj4gICAgYXJlIG5lZWRlZCBpbiBvcmRlciB0byBwZXJm b3JtIGEgZ3Vlc3QgVExCIGZsdXNoLiBJIHRoaW5rIGNhbGxpbmc6Cj4gCj4gI2lmIChTSEFET1df T1BUSU1JWkFUSU9OUyAmIFNIT1BUX1ZJUlRVQUxfVExCKQo+ICAgICAvKiBObyBsb25nZXIgc2Fm ZSB0byB1c2UgY2FjaGVkIGd2YS0+Z2ZuIHRyYW5zbGF0aW9ucyAqLwo+ICAgICB2dGxiX2ZsdXNo KHYpOwo+ICNlbmRpZgo+ICNpZiAoU0hBRE9XX09QVElNSVpBVElPTlMgJiBTSE9QVF9PVVRfT0Zf U1lOQykKPiAgICAgLyogTmVlZCB0byByZXN5bmMgYWxsIHRoZSBzaGFkb3cgZW50cmllcyBvbiBh IFRMQiBmbHVzaC4gKi8KPiAgICAgc2hhZG93X3Jlc3luY19jdXJyZW50X3ZjcHUodik7Cj4gI2Vu ZGlmCj4gCj4gICAgIGlmICggaXNfaHZtX2RvbWFpbihkKSApCj4gICAgICAgICAvKgo+ICAgICAg ICAgICogTGluZWFyIG1hcHBpbmdzIG1pZ2h0IGJlIGNhY2hlZCBpbiBub24tcm9vdCBtb2RlIHdo ZW4gQVNJRC9WUElEIGlzCj4gICAgICAgICAgKiBpbiB1c2UgYW5kIGhlbmNlIHRoZXkgbmVlZCB0 byBiZSBmbHVzaGVkIGhlcmUuCj4gICAgICAgICAgKi8KPiAgICAgICAgIGh2bV9hc2lkX2ZsdXNo X3ZjcHUodik7Cj4gCj4gICAgU2hvdWxkIGJlIGVub3VnaCBidXQgSSdtIG5vdCB2ZXJ5IGZhbWls aWFyIHdpdGggdGhlIHNoYWRvdyBjb2RlLAo+ICAgIGFuZCBoZW5jZSB3b3VsZCBsaWtlIHNvbWUg ZmVlZGJhY2sgZnJvbSBzb21lb25lIG1vcmUgZmFtaWxpYXIgd2l0aAo+ICAgIHNoYWRvdyBpbiBv cmRlciB0byBhc3NlcnQgZXhhY3RseSB3aGF0J3MgcmVxdWlyZWQgdG8gcGVyZm9ybSBhCj4gICAg Z3Vlc3QgVExCIGZsdXNoLgoKSSB3b3VsZCBhZHZpc2Uga2VlcGluZyB0aGUgd2hvbGUgdGhpbmcg dW50aWwgeW91IGhhdmUgbWVhc3VyZW1lbW50cwp0aGF0IHNob3cgdGhhdCBpdCdzIHdvcnRod2hp bGUgYmVpbmcgY2xldmVyIGhlcmUgKGUuZy4gdGhhdCB0aGUgSVBJCmNvc3RzIGRvbid0IGRvbWlu YXRlKS4KCkJ1dCBJIHRoaW5rIGZvciBzYWZldHkgd2UgbmVlZCBhdCBsZWFzdCB0aGUgY29kZSB5 b3UgbWVudGlvbiBhbmQgYWxzbzoKIC0gdGhlIGNvZGUgdGhhdCByZWxvYWRzIHRoZSBQQUUgdG9w LWxldmVsIGVudHJpZXM7IGFuZAogLSB0aGUgc2hhZG93X3Jlc3luY19vdGhlcl92Y3B1cygpIGF0 IHRoZSBlbmQuCgo+ICAgIEFsc28sIEFGQUlDVCBzaF91cGRhdGVfY3IzIGlzIG5vdCBzYWZlIHRv IGJlIGNhbGxlZCBvbiB2Q1BVcwo+ICAgIGN1cnJlbnRseSBydW5uaW5nIG9uIHJlbW90ZSBwQ1BV cywgYWxiZWl0IHRoZXJlIGFyZSBubyBhc3NlcnRpb25zCj4gICAgdG8gdGhhdCBlbmQuIEl0J3Mg YWxzbyBub3QgY2xlYXIgd2hpY2ggcGFydHMgb2Ygc2hfdXBkYXRlX2NyMyBhcmUKPiAgICBzYWZl IHRvIGJlIGNhbGxlZCB3aGlsZSB0aGUgdkNQVSBpcyBydW5uaW5nLgoKWWVhaCwgc2hfdXBkYXRl X2NyMyBtYWtlcyBhIGJ1bmNoIG9mIHN0YXRlIGNoYW5nZXMgYW5kIGFzc3VtZXMKdGhhdCB0aGUg dmNwdSBjYW4ndCBkbyBUTEIgbG9hZHMgcGFydC13YXkgdGhyb3VnaC4gIEl0IG1heSBiZSBwb3Nz aWJsZQp0byBkbyBzb21lIG9mIGl0IHJlbW90ZWx5IGJ1dCBhcyB5b3Ugc2F5IGl0IHdvdWxkIHRh a2UgYSBsb3Qgb2YKdGhpbmtpbmcsIGFuZCBpZiB0aGUgZ3Vlc3QgaXMgcnVubmluZyB5b3UncmUg Z29pbmcgdG8gbmVlZCBhbiBJUEkKYW55d2F5IHRvIGZsdXNoIHRoZSBhY3R1YWwgVExCLgoKPiBG V0lXLCB0aGVyZSBhbHNvIHNlZW1zIHRvIGJlIGEgbG90IG9mIHVubmVlZGVkIGZsdXNoZXMgb2Yg SFZNIGd1ZXN0cwo+IFRMQiwgYXMgZG9fdGxiX2ZsdXNoIHdpbGwgdW5jb25kaXRpb25hbGx5IGNs ZWFyIGFsbCBIVk0gZ3Vlc3QgVExCcyBvbgo+IHRoZSBwQ1BVIGJ5IGNhbGxpbmcgaHZtX2FzaWRf Zmx1c2hfY29yZSB3aGljaCBJIGRvbid0IHRoaW5rIGl0J3MKPiBuZWNlc3NhcnkvaW50ZW5kZWQg YnkgcXVpdGUgYSBsb3Qgb2YgdGhlIFhlbiBUTEIgZmx1c2ggY2FsbGVycy4gSQo+IGd1ZXNzIHRo aXMgd291bGQgYWxzbyB3YXJyYW50IGEgZGlmZmVyZW50IGRpc2N1c3Npb24sIGFzIHRoZXJlIHNl ZW1zCj4gdG8gYmUgcm9vbSBmb3IgaW1wcm92ZW1lbnQgaW4gdGhpcyBhcmVhLgoKVGhlcmUgbWF5 IGJlIHJvb20gZm9yIGltcHJvdmVtZW50LCBidXQgZG8gYmUgY2FyZWZ1bCAtIHRoZSBYZW4gTU0K c2FmZXR5IHJ1bGVzIGRlcGVuZCBvbiBUTEIgZmx1c2hlcyB3aGVuIGEgcGFnZSdzIHR5cGUgb3Ig b3duZXJzaGlwCmNoYW5nZXMsIGFuZCB0aGF0IGRvZXMgbWVhbiBmbHVzaGluZyBldmVuIHRoZSBn dWVzdCBUTEJzLiAgSVNUUgpkaXNjdXNzaW5nIHRoaXMgYXQgdGhlIHRpbWUgdGhhdCB2VExCcyB3 ZXJlIGludHJvZHVjZWQgYW5kIGRlY2lkaW5nCnRoYXQgaXQgd2Fzbid0IHdvcnRoIGFkZGluZyBh bGwgdGhlIHRyYWNraW5nIHRoYXQgd291bGQgYmUgbmVjZXNzYXJ5Owp0aGF0IG1heSBoYXZlIGNo YW5nZWQgbm93IHRoYXQgdGhlIHAybSBpbmZyYXN0cnVjdHVyZSBpcyBiZXR0ZXIKZGV2ZWxvcGVk LgoKQ2hlZXJzLAoKVGltLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVj dC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1k ZXZlbA==