From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCHv2 2/2] xen/privcmd: add ioctls for locking/unlocking hypercall buffers Date: Mon, 22 Aug 2016 18:24:47 +0100 Message-ID: <57BB355F.9020303@citrix.com> References: <1470323800-9481-1-git-send-email-david.vrabel@citrix.com> <1470323800-9481-3-git-send-email-david.vrabel@citrix.com> <57A383310200007800102DDD@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.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bbsy0-0005fB-0Y for xen-devel@lists.xenproject.org; Mon, 22 Aug 2016 17:24:56 +0000 In-Reply-To: <57A383310200007800102DDD@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 , David Vrabel Cc: Juergen Gross , xen-devel@lists.xenproject.org, Boris Ostrovsky List-Id: xen-devel@lists.xenproject.org T24gMDQvMDgvMTYgMTc6MDIsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDA0LjA4LjE2IGF0 IDE3OjE2LCA8ZGF2aWQudnJhYmVsQGNpdHJpeC5jb20+IHdyb3RlOgo+PiBVc2luZyBtbG9jaygp IGZvciBoeXBlcmNhbGwgYnVmZmVycyBpcyBub3Qgc3VmZmljaWVudCBzaW5jZSBtbG9ja2VkCj4+ IHBhZ2VzIGFyZSBzdGlsbCBzdWJqZWN0IHRvIGNvbXBhY3Rpb24gYW5kIHBhZ2UgbWlncmF0aW9u LiAgUGFnZQo+PiBtaWdyYXRpb24gY2FuIGJlIHByZXZlbnRlZCBieSB0YWtpbmcgYWRkaXRpb25h bCByZWZlcmVuY2VzIHRvIHRoZQo+PiBwYWdlcy4KPj4KPj4gSW50cm9kdWNlIHR3byBuZXcgaW9j dGxzOiBJT0NUTF9QUklWQ01EX0hDQUxMX0JVRl9MT0NLIGFuZAo+PiBJT0NUTF9QUklWQ01EX0hD QUxMX0JVRl9VTkxPQ0sgd2hpY2ggZ2V0IGFuZCBwdXQgdGhlIG5lY2Vzc2FyeSBwYWdlCj4+IHJl ZmVyZW5jZXMuICBUaGUgYnVmZmVycyBkbyBub3QgbmVlZCB0byBiZSBwYWdlIGFsaWduZWQgYW5k IHRoZXkgbWF5Cj4+IG92ZXJsYXAgd2l0aCBvdGhlciBidWZmZXJzLiAgSG93ZXZlciwgaXQgaXMg bm90IHBvc3NpYmxlIHRvIHBhcnRpYWxseQo+PiB1bmxvY2sgYSBidWZmZXIgKGkuZS4sIHRoZSBM T0NLL1VOTE9DSyBtdXN0IGFsd2F5cyBiZSBwYWlyZWQpLiAgQW55Cj4+IGxvY2tlZCBidWZmZXJz IGFyZSBhdXRvbWF0aWNhbGx5IHVubG9ja2VkIHdoZW4gdGhlIGZpbGUgZGVzY3JpcHRvciBpcwo+ PiBjbG9zZWQuCj4+Cj4+IEFuIGFsdGVybmF0aXZlIGFwcHJvYWNoIHdvdWxkIGJlIHRvIGV4dGVu ZCB0aGUgZHJpdmVyIHdpdGggYW4gaW9jdGwgdG8KPj4gcG9wdWxhdGUgYSBWTUEgd2l0aCAic3Bl Y2lhbCIsIG5vbi1taWdyYXRhYmxlIHBhZ2VzLiAgQnV0IHRoZQo+PiBMT0NLL1VOTE9DSyBpb2N0 bHMgYXJlIG1vcmUgZmxleGlibGUgYXMgdGhleSBhbGxvdyBhbnkgcGFnZSB0byBiZSB1c2VkCj4+ IGZvciBoeXBlcmNhbGxzIChlLmcuLCBzdGFjaywgbW1hcCdkIGZpbGVzLCBldGMuKS4gIFRoaXMg Y291bGQgYmUgdXNlZAo+PiB0byBtaW5pbWl6ZSBib3VuY2luZyBmb3IgcGVyZm9ybWFuY2UgY3Jp dGljYWwgaHlwZXJjYWxscy4KPj4KPj4gU2lnbmVkLW9mZi1ieTogRGF2aWQgVnJhYmVsIDxkYXZp ZC52cmFiZWxAY2l0cml4LmNvbT4KPiAKPiBSZXZpZXdlZC1ieTogSmFuIEJldWxpY2ggPGpiZXVs aWNoQHN1c2UuY29tPgo+IAo+IHdpdGggdHdvIHJlbWFya3M6IERvIHlvdSBub3QgY2FyZSBhYm91 dCBjb21wYXQgbW9kZSBjYWxsZXJzPwoKTm8uICBDb21wYXQgbW9kZSBjYWxsZXJzIGNhbid0IG1h a2UgaHlwZXJjYWxscyBzaW5jZSB0aGUgaHlwZXJ2aXNvciBBQkkKc3RydWN0dXJlcyBhcmVuJ3Qg Y29udmVydGVkIGFueXdoZXJlLgoKPiBjYXNlIHlvdSBpbmRlZWQgbWVhbiB0byBub3Qgc3VwcG9y dCB0aGVtLCBkb2VzIHRoZSBkZWZhdWx0Cj4gaGFuZGxpbmcgZW5zdXJlIHRoZXkgd2lsbCBzZWUg YW4gZXJyb3IgaW5zdGVhZCBvZiB5b3UgbWlzLWludGVycHJldGluZwo+IChhbmQgb3ZlcnJ1bm5p bmcpIHRoZSBwcmVzZW50ZWQgc3RydWN0dXJlPwoKSSB3aWxsIGxvb2sgYXQgdGhpcy4KCj4+ICtz dGF0aWMgc3RydWN0IHByaXZjbWRfaGJ1ZiAqcHJpdmNtZF9oYnVmX2FsbG9jKHN0cnVjdCBwcml2 Y21kX2hjYWxsX2J1ZiAqYnVmKQo+PiArewo+PiArCXN0cnVjdCBwcml2Y21kX2hidWYgKmhidWY7 Cj4+ICsJdW5zaWduZWQgbG9uZyBzdGFydCwgZW5kLCBucl9wYWdlczsKPj4gKwlpbnQgcmV0Owo+ PiArCj4+ICsJc3RhcnQgPSAodW5zaWduZWQgbG9uZylidWYtPnN0YXJ0ICYgUEFHRV9NQVNLOwo+ PiArCWVuZCA9IEFMSUdOKCh1bnNpZ25lZCBsb25nKWJ1Zi0+c3RhcnQgKyBidWYtPmxlbiwgUEFH RV9TSVpFKTsKPj4gKwlucl9wYWdlcyA9IChlbmQgLSBzdGFydCkgLyBQQUdFX1NJWkU7Cj4gCj4g U28gZW50cnkgcmUtdXNlIGlzIGJhc2VkIG9uIHRoZSBhY3R1YWwgbGVuZ3RoIHRoZSBjYWxsZXIg cGFzc2VkLAo+IHdoaWxlIHBhZ2UgdHJhY2tpbmcgb2YgY291cnNlIGlzIHBhZ2UgZ3JhbnVsYXIu IFdvdWxkbid0IGl0IG1ha2UKPiBzZW5zZSB0byByZS11c2UgZW50cmllcyBiYXNlZCBvbiB0aGUg cGFnZXMgdGhleSBlbmNvbXBhc3MsCj4gd2hpY2ggaW4gcGFydGljdWxhciB3b3VsZCBtZWFuIHRo YXQgdHdvIGRpc3RpbmN0IGJ1ZmZlcnMgb24gdGhlCj4gc2FtZSBwYWdlIHdvdWxkIGdldCBqdXN0 IGEgc2luZ2xlIGVudHJ5PwoKSWYgeW91IG1ha2UgdGhlIGVudHJpZXMgcGFnZSBhbGlnbmVkLCB5 b3UgY2FuJ3QgZ2l2ZSBhbHdheXMgZ2l2ZSBhbgplcnJvciB3aGVuIHRoZSB1c2VyIHVubG9ja3Mg c29tZXRoaW5nIG9mIHRoZSB3cm9uZyBzaXplLgoKRGF2aWQKCl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRl dmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=