From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Jackson Subject: Re: Device model operation hypercall (DMOP, re qemu depriv) Date: Wed, 3 Aug 2016 14:37:02 +0100 Message-ID: <22433.62334.847018.432276@mariner.uk.xensource.com> References: <579A3A62.1020700@citrix.com> <22431.13158.46970.556765@mariner.uk.xensource.com> <579F5F900200007800101468@prv-mh.provo.novell.com> <20160802113808.GG22419@citrix.com> <22433.51108.959688.504038@mariner.uk.xensource.com> <57A1F9CB0200007800102312@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bUwM8-0008UN-14 for xen-devel@lists.xenproject.org; Wed, 03 Aug 2016 13:37:08 +0000 In-Reply-To: <57A1F9CB0200007800102312@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: StefanoStabellini , Wei Liu , George Dunlap , Andrew Cooper , Tim Deegan , David Vrabel , Anthony Perard , xen-devel , dgdegra@tycho.nsa.gov List-Id: xen-devel@lists.xenproject.org SmFuIEJldWxpY2ggd3JpdGVzICgiUmU6IERldmljZSBtb2RlbCBvcGVyYXRpb24gaHlwZXJjYWxs IChETU9QLCByZSBxZW11IGRlcHJpdikiKToKPiBPbiAwMy4wOC4xNiBhdCAxMjoyOSwgPGlhbi5q YWNrc29uQGV1LmNpdHJpeC5jb20+IHdyb3RlOgo+ID4gSSB0aG91Z2h0IGl0IHVzZWZ1bCB0byBz ZXQgb3V0IHRoZSBETU9QIHByb3Bvc2FsIGZyb20gZmlyc3QKPiA+IHByaW5jaXBsZXMsIHdpdGgg Y2xlYXIgbW90aXZhdGlvbiwgZGlzY3Vzc2lvbiBvZiBub3QtY2hvc2VuCj4gPiBhbHRlcm5hdGl2 ZXMsIGFuZCBvZiBjb3Vyc2Ugd2l0aCBhIGNsZWFyIHN0YXRlbWVudCBvZiB0aGUgcHJpbmNpcGxl cwo+ID4gb2Ygb3BlcmF0aW9uIGFuZCBvZiB0aGUgc2VjdXJpdHkgZGVzaWduLgo+IAo+IE9rYXk7 IG5ldmVydGhlbGVzcyBJIGRpZCBnZXQgdGhlIGZlZWxpbmcgdGhhdCBzb21lIG9mIHRoaXMgd2Fz Cj4gcHJvbXB0ZWQgYnkgdGhlIGh2bWN0bCBzZXJpZXMgcG9zdGluZy4KCldlbGwsIEkgdGhpbmsg dGhlIEhWTUNUTCBzZXJpZXMgaXMgYW4gaW1wb3J0YW50IHBhcnQgb2YgdGhpcwpjb252ZXJzYXRp b24gLSBldmVuIHRob3VnaCB0aGlzIERNT1AgaWRlYSBpcyBtb3RpdmF0ZWQgYnkgdGhlIHFlbXUK ZGVwcml2IHByb3Bvc2FscyAoaW5pdGlhdGVkIG1vc3RseSBieSBTdGVmYW5vIGluIHRoZSBsYXN0 IHJlbGVhc2UKY3ljbGUpLgoKPiA+IERvZXMgdGhhdCBtZWFuIHRoYXQgZnVuY3Rpb25hbGl0eSBl eHBvc2VkIGJ5IGFsbCB0aGUgcHJvb3Bvc2VkIEhWTUNUTHMKPiA+IGlzIGN1cnJlbnRseSBhdmFp bGFibGUgdG8gc3R1YmRvbXMgPwo+IAo+IFRoYXQgc2VyaWVzIG9ubHkgbW92ZXMgY29kZSBmcm9t IG9uZSBoeXBlcmNhbGwgdG8gYW5vdGhlciAobmV3KSBvbmUsCj4gd2l0aG91dCBhbnkgc2VjdXJp dHkgaW1wbGljYXRpb25zIGF0IGFsbC4gV2hhdCBoYXMgYmVlbiBhdmFpbGFibGUgdG8KPiBzdHVi ZG9tcyBwcmlvciB0byB0aGF0IHNlcmllcyB3aWxsIGJlIGF2YWlsYWJsZSB0aGUgc2FtZSB3YXkg b25jZSBpdAo+IGdvdCBhcHBsaWVkLgoKU28gd2hhdCB5b3UgbWVhbiBpcyB0aGF0IGluIEhWTUNU TCwgdGhlIHByaXZpbGVnZSBjaGVjayBpcyByZXRhaW5lZCBpbgp0aGUgaW5kaXZpZHVhbCBIVk1D VEwgc3ViLW9wZXJhdGlvbiA/ICAoSWUgd2hhdCB1c2VkIHRvIGJlIElTX1BSSVYgb3IKSVNfUFJJ Vl9GT1IgLSBhbmQgaW1wbGljaXRseSwgc29tZSBzdWItb3BzIHdvdWxkIGJlIElTX1BSSVYgYW5k IHNvbWUKSVNfUFJJVl9GT1IuKQoKQnV0IGxvb2tpbmcgYXQgeW91ciB2MiAwMS8xMSwgSSBzZWUg dGhpcyBpbiBkb19odm1jdGw6CgogICArICAgIHJjID0geHNtX2h2bV9jb250cm9sKFhTTV9ETV9Q UklWLCBkLCBvcC5jbWQpOwogICArICAgIGlmICggcmMgKQogICArICAgIHsKICAgKyAgICAgICAg cmN1X3VubG9ja19kb21haW4oZCk7CiAgICsgICAgICAgIHJldHVybiByYzsKICAgKyAgICB9CgpB bmQgbG9va2luZyBhdCB2MiAwMi8xMSwgSSBkaWRuJ3Qgc2VlIGFueSBwcml2aWxlZ2UgY2hlY2sg aW4gdGhlCnNwZWNpZmljIGh5cGVyY2FsbC4KCldpdGggRE1PUCBpdCB3b3VsZCBtYWtlIHNlbnNl IGZvciB0aGUgcHJpdmlsZWdlIGNoZWNrIHRvIGJlCklTX1BSSVZfRk9SLCBpbiB0aGUgRE1PUCBk aXNwYXRjaGVyLiAgQnV0IGl0IHNlZW1zIHRoYXQgdGhpcyBwcml2aWxlZ2UKY2hlY2sgYWxyZWFk eSBleGlzdHMgaW4gSFZNQ1RMIGluIHRoZSByaWdodCBmb3JtLgoKU28gQUZBSUNUIEhWTUNUTHMg YWxyZWFkeSBndWFyYW50ZWUgbm90IHRvIGhhdmUgYW4gYWR2ZXJzZSBpbXBhY3Qgb24KdGhlIHdo b2xlIHN5c3RlbS4gIElmIHRoYXQgd2VyZW4ndCB0aGUgY2FzZSwgdGhlbiBhIHN0dWIgZG0gY291 bGQKZXhwbG9pdCB0aGUgc2l0dWF0aW9uLgoKSXMgdGhlIGF1ZGl0IHRoYXQgaXMgcmVxdWlyZWQs IHRvIGNoZWNrIHRoYXQgdGhlIERNT1AgZG9lc24ndCBoYXZlIGFuCmFkdmVyc2UgZWZmZWN0IG9u IHRoZSBfY2FsbGluZyBkb21haW5fID8gIEFGQUlDVCBtb3N0IEhWTUNUTHMvRE1PUHMKaGF2ZSAv bm8vIGVmZmVjdCBvbiB0aGUgY2FsbGluZyBkb21haW4sIG90aGVyIHRoYW4gYXMgcGFydCBvZiBh cmd1bWVudApwYXNzaW5nLiAgU28gdGhhdCBhdWRpdCBzaG91bGQgYmUgZWFzeS4KClNvIEkgYW0g Y29uZnVzZWQuICBXaGF0IGFtIEkgbWlzc2luZyA/Cgo+ID4gSWYgdGhlIDAxLyBwYXRjaCBjb250 YWlucyBzdWNoIHByb21pc2VzLCB0aGVuIGxvZ2ljYWxseSB0aGUgMDIvIHBhdGNoCj4gPiB3aGlj aCBpbnRyb2R1Y2VzIHRoZSBmaXJzdCBETU9QIGlzIGV4dGVuZGluZyB0aGF0IHByb21pc2UgdG8g dGhhdAo+ID4gb3BlcmF0aW9uLiAgSXQgaXMgYXQgdGhhdCBwb2ludCB0aGF0IHRoZSBzZWN1cml0 eSBkZWNpc2lvbiBzaG91bGQgYmUKPiA+IG1hZGUuCj4gCj4gQ29ycmVjdC4gWWV0IGFnYWluIHRo ZSBvcmlnaW5hbCBnb2FsIG9mIHRoZSBzZXJpZXMgd2FzIGp1c3QgcHJvcGVyCj4gc2VwYXJhdGlv biBvZiB0d28gZ3JvdXBzIG9mIG9wZXJhdGlvbnMgdGhhdCBzaG91bGQgbmV2ZXIgaGF2ZQo+IGJl ZW4gYWxsIHRocm93biB1bmRlciB0aGUgc2FtZSBoeXBlcmNhbGwuCgpXaGF0IEkgYW0gZG9pbmcg aXMgcHJlc2VudGluZyBhbm90aGVyLCBhZGRpdGlvbmFsIGdvYWwuICBJIGRvbid0CmRpc3B1dGUg dGhlIHVzZWZ1bG5lc3Mgb2YgdGhlIEhWTUNUTCBjbGVhbnVwLiAgQnV0IEkgd2FudCB0bwp1bmRl cnN0YW5kIG91ciBmdXR1cmUgaW50ZW50aW9ucy4KCkluIHBhcnRpY3VsYXIsIGFzIGEgcHJvcG9u ZW50IG9mIHRoZSBETU9QIGlkZWEsIEkgd2FudCB0byBhdm9pZCB0aGUKc2l0dWF0aW9uIHRoYXQg bXkgaWRlYSBpcyBibG9ja2VkIHNvbWVob3cgYnkgYSBjb25mbGljdGluZyBzZXJpZXMuCgo+ID4g Tm93LCB0aGVyZSBtYXkgYmUgb3RoZXIgd2F5cyB0byByZXByZXNlbnQvcmVjb3JkIHRoZSBzZWN1 cml0eSBzdGF0dXMuCj4gPiBCdXQgaXQgd2lsbCBiZSBuZWNlc3NhcnkgdG8gZWl0aGVyIChpKSBh dm9pZCB2aW9sYXRpbmcgdGhlIERNT1AKPiA+IHNlY3VyaXR5IHByb21pc2UsIGJ5IG1ha2luZyBx dWVzdGlvbmFibGUgY2FsbHMgbm90IGF2YWlsYWJsZSB2aWEgRE1PUAo+ID4gb3IgKGlpKSB0cnlp bmcgdG8gcmV0cm9maXQgdGhlIHNlY3VyaXR5IHByb21pc2UgdG8gRE1PUCBsYXRlci4KPiA+IAo+ ID4gSSB0aGluayAoaWkpIGlzIG5vdCBhIGdvb2QgYXBwcm9hY2guICBJdCB3b3VsZCBhbW91bnQg dG8gaW50cm9kdWNpbmcgYQo+ID4gd2hvbGUgbmV3IHNldCBvZiBpbnRlcmZhY2VzLCBhbmQgdGhl biBsYXRlciB0cnlpbmcgdG8gcmVkZWZpbmUgdGhlbSB0bwo+ID4gaGF2ZSBhIHBhcnRpY3VsYXIg c2VjdXJpdHkgcHJvcGVydHkgd2hpY2ggd2FzIG5vdCBvcmlnaW5hbGx5IHRoZXJlLgo+IAo+IEkg YWdyZWUgdGhhdCAoaSkgd291bGQgYmUgdGhlIGJldHRlciBhcHByb2FjaCwgYnV0IEkgZG9uJ3Qg dGhpbmsgSQo+IGNhbiBhc3Nlc3Mgd2hlbiBJIHdvdWxkIGZpbmQgdGhlIHRpbWUgdG8gZG8gdGhl IHJlcXVpcmVkIGF1ZGl0aW5nCj4gb2YgYWxsIGludm9sdmVkIGNvZGUuIFBsdXMgSSBkb24ndCBz ZWUgdGhlIGRpZmZlcmVuY2UgYmV0d2VlbiBnb2luZwo+IHRoZSAoaWkpIHJvdXRlIHdpdGggdGhl IHByZXNlbnRlZCBodm1jdGwgc2VyaWVzIHZzIGtlZXBpbmcgdGhpbmdzIGFzCj4gdGhleSBhcmUg KHVuZGVyIGh2bW9wKSAtIGluIGJvdGggY2FzZXMgdGhlIHNlY3VyaXR5IHByb21pc2Ugd2lsbAo+ IG5lZWQgdG8gYmUgcmV0cm9maXQgb250byBleGlzdGluZyBjb2RlLgoKSWYgd2UgZG9uJ3QgYXBw bHkgSFZNQ1RMLCB3ZSBjYW4gaW50cm9kdWNlIERNT1AgYW5kIHRoZW4gaW5kaXZpZHVhbGx5Cm1v dmUgaHlwZXJjYWxscyBmcm9tIGh2bW9wIHRvIERNT1AgYXMgdGhleSBhcmUgYXVkaXRlZC4KCldv dWxkIGEgc2ltaWxhciBhcHByb2FjaCBiZSBhY2NlcHRhYmxlIGV2ZW4gYWZ0ZXIgSFZNQ1RMID8K ClRoYXQgaXMsIHRoZSBmb2xsb3dpbmcgcGxhbjoKCjEuIEFwcGx5IEhWTUNUTCByaWdodCBhd2F5 LiAgVGhpcyBzb2x2ZXMgdGhlIGNsZWFudXAgcHJvYmxlbSwKICAgYnV0IGxlYXZlcyB0aGUgcWVt dSBkZXByaXYgcHJvYmxlbSB1bnNvbHZlZC4KCjIuIEFmdGVyIHRoZSBuZWNlc3NhcnkgZGlzY3Vz c2lvbiB0byB1bmRlcnN0YW5kIGFuZCByZWZpbmUgdGhlIERNT1AKICAgZGVzaWduLCBjcmVhdGUg YSBuZXcgRE1PUCBoeXBlcmNhbGwgd2l0aCBhcHByb3ByaWF0ZSBzZWN1cml0eQogICBwcm9taXNl cyBhbmQgd2hhdGV2ZXIgc3RhYmlsaXR5IHByb21pc2VzIGFyZSBhZ3JlZWQsIGJ1dCB3aXRoIG5v CiAgIHN1Yi1vcHMuCgozLiBNb3ZlIGVhY2ggSFZNQ1RMIHRvIERNT1AsIG9uZSBieSBvbmUsIGFz IGl0IGlzIGF1ZGl0ZWQuCgo0LiBQZXJoYXBzIHNvbWUgSFZNQ1RMcyB3aWxsIHJlbWFpbiB3aGlj aCBhcmUgaW5oZXJlbnRseSB1bnN1aXRhYmxlCiAgIGZvciB1c2Ugd2l0aCBxZW11IGRlcHJpdi4g IElmIG5vdCwgcGVyaGFwcyBldmVudHVhbGx5IGRlbGV0ZSBIVk1DVEwKICAgZW50aXJlbHksIG9y IGxlYXZlIGl0IGVtcHR5ICh3aXRoIG5vIHN1Ym9wcykuCgpUaGlzIGhhcyB0aGUgZG93bnNpZGUg dGhhdCB3ZSBlbmQgdXAgbW92aW5nIGFsbCB0aGUgRE1PUHMgdHdpY2UuICBCdXQKaXQgZG9lcyBh bGxvdyB1cyB0byBzZXBhcmF0ZSB0aGUgYXVkaXQgd29yayBmcm9tIHRoZSBjbGVhbnVwL3Jlb3Jn LgoKUmVnYXJkcywKSWFuLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==