From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH 1/5] mm: return valid info from hmm_range_unregister Date: Wed, 3 Jul 2019 19:00:50 +0000 Message-ID: <20190703190045.GN18688@mellanox.com> References: <20190703184502.16234-1-hch@lst.de> <20190703184502.16234-2-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190703184502.16234-2-hch-jcswGhMUV9g@public.gmane.org> Content-Language: en-US Content-ID: <9EED1B508716C14685B4671208A7B4A6-wNKe6lTLrGecE4WynfumptQqCkab/8FMAL8bYrjMMd8@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: Christoph Hellwig Cc: Ralph Campbell , "nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" , "linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org" , Ben Skeggs List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBKdWwgMDMsIDIwMTkgYXQgMTE6NDQ6NThBTSAtMDcwMCwgQ2hyaXN0b3BoIEhlbGx3 aWcgd3JvdGU6Cj4gQ2hlY2tpbmcgcmFuZ2UtPnZhbGlkIGlzIHRyaXZpYWwgYW5kIGhhcyBubyBt ZWFuaW5nZnVsIGNvc3QsIGJ1dAo+IG5pY2VseSBzaW1wbGlmaWVzIHRoZSBmYXN0cGF0aCBpbiB0 eXBpY2FsIGNhbGxlcnMuICAKCkl0IHNob3VsZCBub3QgYmUgdGhlIHR5cGljYWwgY2FsbGVyLi4K Cj4gaG1tX3ZtYV9yYW5nZV9kb25lIGZ1bmN0aW9uLCB3aGljaCBub3cgaXMgYSB0cml2aWFsIHdy YXBwZXIgYXJvdW5kCj4gaG1tX3JhbmdlX3VucmVnaXN0ZXIuCj4gCj4gU2lnbmVkLW9mZi1ieTog Q2hyaXN0b3BoIEhlbGx3aWcgPGhjaEBsc3QuZGU+Cj4gUmV2aWV3ZWQtYnk6IFJhbHBoIENhbXBi ZWxsIDxyY2FtcGJlbGxAbnZpZGlhLmNvbT4KPiAgZHJpdmVycy9ncHUvZHJtL25vdXZlYXUvbm91 dmVhdV9zdm0uYyB8ICAyICstCj4gIGluY2x1ZGUvbGludXgvaG1tLmggICAgICAgICAgICAgICAg ICAgfCAxMSArLS0tLS0tLS0tLQo+ICBtbS9obW0uYyAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgIHwgIDcgKysrKysrLQo+ICAzIGZpbGVzIGNoYW5nZWQsIDggaW5zZXJ0aW9ucygrKSwgMTIg ZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9ub3V2ZWF1L25v dXZlYXVfc3ZtLmMgYi9kcml2ZXJzL2dwdS9kcm0vbm91dmVhdS9ub3V2ZWF1X3N2bS5jCj4gaW5k ZXggOGM5MjM3NGFmY2YyLi45ZDQwMTE0ZDc5NDkgMTAwNjQ0Cj4gKysrIGIvZHJpdmVycy9ncHUv ZHJtL25vdXZlYXUvbm91dmVhdV9zdm0uYwo+IEBAIC02NTIsNyArNjUyLDcgQEAgbm91dmVhdV9z dm1fZmF1bHQoc3RydWN0IG52aWZfbm90aWZ5ICpub3RpZnkpCj4gIAkJcmV0ID0gaG1tX3ZtYV9m YXVsdCgmc3ZtbS0+bWlycm9yLCAmcmFuZ2UsIHRydWUpOwo+ICAJCWlmIChyZXQgPT0gMCkgewo+ ICAJCQltdXRleF9sb2NrKCZzdm1tLT5tdXRleCk7Cj4gLQkJCWlmICghaG1tX3ZtYV9yYW5nZV9k b25lKCZyYW5nZSkpIHsKPiArCQkJaWYgKCFobW1fcmFuZ2VfdW5yZWdpc3RlcigmcmFuZ2UpKSB7 Cj4gIAkJCQltdXRleF91bmxvY2soJnN2bW0tPm11dGV4KTsKPiAgCQkJCWdvdG8gYWdhaW47Cj4g IAkJCX0KCkluIHRoaXMgY2FzZSBpZiB3ZSB0YWtlIHRoZSAnZ290byBhZ2FpbicgdGhlbiB3ZSBh cmUgcG9pbnRsZXNzbHkKcmVtb3ZpbmcgYW5kIHJlLWFkZGluZyB0aGUgcmFuZ2UuCgpUaGUgcGF0 dGVybiBpcyBzdXBwb3NlZCB0byBiZToKCiAgICBobW1fcmFuZ2VfcmVnaXN0ZXIoKQphZ2FpbjoK ICAgIC4uIHJlYWQgcGFnZSB0YWJsZXMgLi4KICAgIGxvY2sKICAgIGlmICghaG1tX3JhbmdlX3Zh bGlkKCkpCiAgICAgICAgdW5sb2NrCiAgICAgICAgZ290byBhZ2FpbgogICAgLi4gc2V0dXAgZGV2 aWNlIC4uCiAgICB1bmxvY2sKICAgIGhtbV9yYW5nZV91bnJlZ2lzdGVyKCkKCkkgZG9uJ3QgdGhp bmsgdGhlIEFQSSBzaG91bGQgYmUgZW5jb3VyYWdpbmcgc29tZSBzaG9ydGN1dCBoZXJlLi4KCldl IGNhbid0IGRvIHRoZSBhYm92ZSBwYXR0ZXJuIGJlY2F1c2UgdGhlIG9sZCBobW1fdm1hIEFQSSBk aWRuJ3QgYWxsb3cKaXQsIHdoaWNoIGlzIHByZXN1bWFibHkgYSByZWFzb24gd2h5IGl0IGlzIG9i c29sZXRlLgoKSSdkIHJhdGhlciBzZWUgZHJpdmVycyBtb3ZlIHRvIGEgY29uc2lzdGVudCBwYXR0 ZXJuIHNvIHdlIGNhbiB0aGVuCmVhc2lseSBob2lzdCB0aGUgc2VxY291bnQgbG9jayBzY2hlbWUg aW50byBzb21lIGNvbW1vbiBtbXUgbm90aWZpZXIKY29kZSwgYXMgZGlzY3Vzc2VkLgoKSmFzb24K X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTm91dmVhdSBt YWlsaW5nIGxpc3QKTm91dmVhdUBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5m cmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9ub3V2ZWF1