From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH v2 hmm 03/11] mm/hmm: Hold a mmgrab from hmm to mm Date: Fri, 7 Jun 2019 09:36:47 -0300 Message-ID: <20190607123647.GC14802@ziepe.ca> References: <20190606184438.31646-1-jgg@ziepe.ca> <20190606184438.31646-4-jgg@ziepe.ca> <48fcaa19-6ac3-59d0-cd51-455abeca7cdb@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <48fcaa19-6ac3-59d0-cd51-455abeca7cdb-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: John Hubbard Cc: Andrea Arcangeli , Ralph Campbell , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Felix.Kuehling-5C7GfCeVMHo@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, Jerome Glisse , amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: dri-devel@lists.freedesktop.org T24gVGh1LCBKdW4gMDYsIDIwMTkgYXQgMDc6NDQ6NThQTSAtMDcwMCwgSm9obiBIdWJiYXJkIHdy b3RlOgo+IE9uIDYvNi8xOSAxMTo0NCBBTSwgSmFzb24gR3VudGhvcnBlIHdyb3RlOgo+ID4gRnJv bTogSmFzb24gR3VudGhvcnBlIDxqZ2dAbWVsbGFub3guY29tPgo+ID4gCj4gPiBTbyBsb25nIGEg YSBzdHJ1Y3QgaG1tIHBvaW50ZXIgZXhpc3RzLCBzbyBzaG91bGQgdGhlIHN0cnVjdCBtbSBpdCBp cwo+ID4gbGlua2VkIHRvby4gSG9sZCB0aGUgbW1ncmFiKCkgYXMgc29vbiBhcyBhIGhtbSBpcyBj cmVhdGVkLCBhbmQgbW1kcm9wKCkgaXQKPiA+IG9uY2UgdGhlIGhtbSByZWZjb3VudCBnb2VzIHRv IHplcm8uCj4gPiAKPiA+IFNpbmNlIG1tZHJvcCgpIChpZSBhIDAga3JlZiBvbiBzdHJ1Y3QgbW0p IGlzIG5vdyBpbXBvc3NpYmxlIHdpdGggYSAhTlVMTAo+ID4gbW0tPmhtbSBkZWxldGUgdGhlIGht bV9obW1fZGVzdHJveSgpLgo+ID4gCj4gPiBTaWduZWQtb2ZmLWJ5OiBKYXNvbiBHdW50aG9ycGUg PGpnZ0BtZWxsYW5veC5jb20+Cj4gPiBSZXZpZXdlZC1ieTogSsOpcsO0bWUgR2xpc3NlIDxqZ2xp c3NlQHJlZGhhdC5jb20+Cj4gPiB2MjoKPiA+ICAtIEZpeCBlcnJvciB1bndpbmQgcGF0aHMgaW4g aG1tX2dldF9vcl9jcmVhdGUgKEplcm9tZS9KYXNvbikKPiA+ICBpbmNsdWRlL2xpbnV4L2htbS5o IHwgIDMgLS0tCj4gPiAga2VybmVsL2ZvcmsuYyAgICAgICB8ICAxIC0KPiA+ICBtbS9obW0uYyAg ICAgICAgICAgIHwgMjIgKysrKy0tLS0tLS0tLS0tLS0tLS0tLQo+ID4gIDMgZmlsZXMgY2hhbmdl ZCwgNCBpbnNlcnRpb25zKCspLCAyMiBkZWxldGlvbnMoLSkKPiA+IAo+ID4gZGlmZiAtLWdpdCBh L2luY2x1ZGUvbGludXgvaG1tLmggYi9pbmNsdWRlL2xpbnV4L2htbS5oCj4gPiBpbmRleCAyZDUx OTc5N2NiMTM0YS4uNGVlM2FjYWJlNWVkMjIgMTAwNjQ0Cj4gPiArKysgYi9pbmNsdWRlL2xpbnV4 L2htbS5oCj4gPiBAQCAtNTg2LDE0ICs1ODYsMTEgQEAgc3RhdGljIGlubGluZSBpbnQgaG1tX3Zt YV9mYXVsdChzdHJ1Y3QgaG1tX21pcnJvciAqbWlycm9yLAo+ID4gIH0KPiA+ICAKPiA+ICAvKiBC ZWxvdyBhcmUgZm9yIEhNTSBpbnRlcm5hbCB1c2Ugb25seSEgTm90IHRvIGJlIHVzZWQgYnkgZGV2 aWNlIGRyaXZlciEgKi8KPiA+IC12b2lkIGhtbV9tbV9kZXN0cm95KHN0cnVjdCBtbV9zdHJ1Y3Qg Km1tKTsKPiA+IC0KPiA+ICBzdGF0aWMgaW5saW5lIHZvaWQgaG1tX21tX2luaXQoc3RydWN0IG1t X3N0cnVjdCAqbW0pCj4gPiAgewo+ID4gIAltbS0+aG1tID0gTlVMTDsKPiA+ICB9Cj4gPiAgI2Vs c2UgLyogSVNfRU5BQkxFRChDT05GSUdfSE1NX01JUlJPUikgKi8KPiA+IC1zdGF0aWMgaW5saW5l IHZvaWQgaG1tX21tX2Rlc3Ryb3koc3RydWN0IG1tX3N0cnVjdCAqbW0pIHt9Cj4gPiAgc3RhdGlj IGlubGluZSB2b2lkIGhtbV9tbV9pbml0KHN0cnVjdCBtbV9zdHJ1Y3QgKm1tKSB7fQo+ID4gICNl bmRpZiAvKiBJU19FTkFCTEVEKENPTkZJR19ITU1fTUlSUk9SKSAqLwo+ID4gIAo+ID4gZGlmZiAt LWdpdCBhL2tlcm5lbC9mb3JrLmMgYi9rZXJuZWwvZm9yay5jCj4gPiBpbmRleCBiMmI4N2Q0NTBi ODBiNS4uNTg4Yzc2OGFlNzI0NTEgMTAwNjQ0Cj4gPiArKysgYi9rZXJuZWwvZm9yay5jCj4gPiBA QCAtNjczLDcgKzY3Myw2IEBAIHZvaWQgX19tbWRyb3Aoc3RydWN0IG1tX3N0cnVjdCAqbW0pCj4g PiAgCVdBUk5fT05fT05DRShtbSA9PSBjdXJyZW50LT5hY3RpdmVfbW0pOwo+ID4gIAltbV9mcmVl X3BnZChtbSk7Cj4gPiAgCWRlc3Ryb3lfY29udGV4dChtbSk7Cj4gPiAtCWhtbV9tbV9kZXN0cm95 KG1tKTsKPiAKPiAKPiBUaGlzIGlzIHBhcnRpY3VsYXJseSB3ZWxjb21lLCBub3QgdG8gaGF2ZSBh biAiSE1NIGlzIHNwZWNpYWwiIGNhc2UKPiBpbiBzdWNoIGEgY29yZSBwYXJ0IG9mIHByb2Nlc3Mv bW0gY29kZS4gCgpJIHdvdWxkIHZlcnkgbXVjaCBsaWtlIHRvIHByb3Bvc2Ugc29tZXRoaW5nIGxp a2UgJ3Blci1uZXQnIGZvciBzdHJ1Y3QKbW0sIGFzIHJkbWEgYWxzbyBuZWVkIHRvIGFkZCBzb21l IGRhdGEgdG8gZWFjaCBtbSB0byBtYWtlIGl0J3MgdXNlIG9mCm1tdSBub3RpZmllcnMgd29yayAo Zm9yIGJhc2ljYWxseSB0aGlzIHNhbWUgcmVhc29uIGFzIEhNTSkKClRoYW5rcywKSmFzb24KX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KYW1kLWdmeCBtYWls aW5nIGxpc3QKYW1kLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9hbWQtZ2Z4