From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Chew Subject: Re: CUDA fixed VA allocations and sparse mappings Date: Tue, 7 Jul 2015 11:47:10 -0700 Message-ID: <20150707184710.GA31624@achew-linux64.nvidia.com> References: <20150707004249.GC27924@achew-linux64.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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: "nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" , "dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" List-Id: nouveau.vger.kernel.org T24gVHVlLCBKdWwgMDcsIDIwMTUgYXQgMTE6Mjk6MzhBTSAtMDQwMCwgSWxpYSBNaXJraW4gd3Jv dGU6Cj4gT24gTW9uLCBKdWwgNiwgMjAxNSBhdCA4OjQyIFBNLCBBbmRyZXcgQ2hldyA8YWNoZXdA bnZpZGlhLmNvbT4gd3JvdGU6Cj4gPiBUaGVzZSBpb2N0bHMganVzdCBjYWxsIGludG8gdGhlIGFs bG9jYXRvciB0byBhbGxvY2F0ZSBhIHJhbmdlIG9mIGFkZHJlc3NlcywKPiA+IHJlc3VsdGluZyBp biBhIHN0cnVjdCBudmttX3ZtYSB0aGF0IHRyYWNrcyB0aGF0IGFsbG9jYXRpb24gKG9yIHJlbGVh c2VzIHRoZQo+ID4gc3RydWN0IG52a21fdm1hIGJhY2sgaW50byB0aGUgdmlydHVhbCBhZGRyZXNz IHBvb2wgaW4gdGhlIGNhc2Ugb2YgdGhlIGZyZWUKPiA+IGlvY3RsKS4gIElmIE5PVVZFQVVfQVNf QUxMT0NfRkxBR1NfRklYRURfT0ZGU0VUIGlzIHNldCwgb2Zmc2V0IHNwZWNpZmllcyB0aGUKPiA+ IHJlcXVlc3RlZCB2aXJ0dWFsIGFkZHJlc3MuICBPdGhlcndpc2UsIGFuIGFyYml0cmFyeSBhZGRy ZXNzIHdpbGwgYmUKPiA+IGFsbG9jYXRlZC4KPiAKPiBXZWxsLCB0aGlzIGNhbid0IGp1c3QgYmUg YW4gYWRkcmVzcyBzcGFjZS4gWW91IHN0aWxsIG5lZWQgYm8ncywgaWYKPiB0aGlzIGlzIHRvIHdv cmsgd2l0aCBub3V2ZWF1IC0tIGl0IGhhcyB0byBrbm93IHdoZW4gdG8gc3dhcCB0aGluZ3MgaW4K PiBhbmQgb3V0LCB3aGVuIHRoZXkncmUgdXNlZCwgZXRjLiAoYW5kL29yIG1vdmUgYmV0d2VlbiBW UkFNIGFuZCBHQVJUCj4gYW5kIHN5c3RlbS9zd2FwKS4gSSBzdXNwZWN0IHRoYXQgeW91ciB0YXJn ZXQgaGVyZSBhcmUgdGhlIEdLMjBBIGFuZAo+IEdNMjBCIGNoaXBzIHdoaWNoIGRvbid0IGhhdmUg ZGVkaWNhdGVkIFZSQU0sIGJ1dCB0aGUgaW9jdGwncyBuZWVkIHRvCj4gd29yayBmb3IgZXZlcnl0 aGluZy4KPiAKPiBXb3VsZCBpdCBiZSBzdWZmaWNpZW50IHRvIGV4dGVuZCBOT1VWRUFVX0dFTV9O RVcgb3IgY3JlYXRlIGEKPiBOT1VWRUFVX0dFTV9ORVdfRklYRUQgb3Igc29tZXRoaW5nPyBJT1cs IHdoeSBkbyBoYXZlIHRvIHNlcGFyYXRlIHRoZQo+IGNvbmNlcHQgb2YgYSBHRU0gb2JqZWN0IGFu ZCBhIFZNIGFsbG9jYXRpb24/CgpZb3UncmUgY29ycmVjdC4gIFRoaXMgaXMgZm9yIGdrMjBhIGFu ZCBnbTIwYi4KClRoZSB0aGluZyB0aGVzZSBwcm9wb3NlZCBpb2N0bHMgYXJlIHN1cHBvc2VkIHRv IGFjY29tcGxpc2ggaXMgdG8gcmVzZXJ2ZSwKYWhlYWQgb2YgdGltZSwgYSBwb3J0aW9uIG9mIHRo ZSBhZGRyZXNzIHNwYWNlLiAgU28gYXQgdGhpcyB0aW1lLCB0aGVyZQpyZWFsbHkgYXJlbid0IGFu eSBidWZmZXIgb2JqZWN0cyB5ZXQsIGFuZCB0aGVyZSdzIG5vdGhpbmcgdG8gYmUgbWFwcGVkIHRv CnRoZSBHTU1VLiAgVGhhdCBwYXJ0IHdvdWxkIGNvbWUgbGF0ZXIuCgo+ID4gSW4gYWRkaXRpb24g dG8gdGhpcywgYSB3YXkgdG8gbWFwL3VubWFwIGJ1ZmZlcnMgaXMgbmVlZGVkLiAgT3JkaW5hcmls eSwgb25lCj4gPiB3b3VsZCBqdXN0IHVzZSBEUk1fSU9DVExfUFJJTUVfRkRfVE9fSEFORExFIHRv IGltcG9ydCBhbmQgbWFwIGEgZG1hYnVmIGludG8KPiA+IGdlbS4gIEhvd2V2ZXIsIHRoaXMgaW9j dGwgd2lsbCB0cnkgdG8gZ3JhYiB0aGUgdmlydHVhbCBhZGRyZXNzIHJhbmdlIGZvciB0aGlzCj4g PiBidWZmZXIsIHdoaWNoIHdpbGwgZmFpbCBpbiB0aGUgQ1VEQSBjYXNlIHNpbmNlIHRoZSB2aXJ0 dWFsIGFkZHJlc3MgcmFuZ2UKPiA+IGhhcyBiZWVuIHJlc2VydmVkIGFoZWFkIG9mIHRpbWUuICBT byB3ZSBwZXJoYXBzIGludHJvZHVjZSBhIHNldCBvZiBpb2N0bHMKPiA+IHRvIG1hcC91bm1hcCBi dWZmZXJzIG9uIHRvcCBvZiBhbiBhbHJlYWR5IGV4aXN0aW5nIHZpcnR1YWwgYWRkcmVzcyBhbGxv Y2F0aW9uLgo+IAo+IE15IHN1Z2dlc3Rpb24gYWJvdmUgaXMgYW4gYWx0ZXJuYXRpdmUgdG8gdGhp cywgcmlnaHQ/IEkgdGhpbmsgZG1hYnVmcwo+IHRlbmQgdG8gYmUgdXNlZCBmb3Igc2hhcmluZyBi ZXR3ZWVuIGRldmljZXMuIEkgc3VzcGVjdCB0aGVyZSdzIG1vcmUKPiBnb2luZyBvbiBoZXJlIHRo YXQgSSBkb24ndCB1bmRlcnN0YW5kIHRob3VnaCAtLSBJIGFzc3VtZSB0aGUgQ1VEQQo+IHVzZS1j YXNlIGlzIHNpbWlsYXIgdG8gdGhlIEhTQSB1c2UtY2FzZSAtLSBiZWluZyBhYmxlIHRvIGJ1aWxk IHVwIGRhdGEKPiBzdHJ1Y3R1cmVzIHRoYXQgcG9pbnQgdG8gb25lIGFub3RoZXIgb24gdGhlIENQ VSBhbmQgdGhlbiBwcm9jZXNzIHRoZW0KPiBvbiB0aGUgR1BVPyBDYW4geW91IGRldGFpbCBhIHNw ZWNpZmljIHVzZS1jYXNlIHBlcmhhcHMsIGluY2x1ZGluZyB0aGUKPiBpbnRlcmFjdGlvbnMgd2l0 aCB0aGUgR1BVIGFuZCBpdHMgYWRkcmVzcyBzcGFjZT8KClRoZSB3aG9sZSBkbWFidWZzIHRoaW5n IGlzIGtpbmQgb2YgYSBzaWRlIGlzc3VlLiAgSSdsbCB0YWtlIGEgbG9vayBhdApOT1VWRUFVX0dF TV9ORVcsIGJ1dCB0aGF0IGNvdWxkIGJlIGFuIGFsdGVybmF0aXZlIHRvIHRoaXMsIG1heWJlLCBp ZgpleHRlbmRlZCAob3Igd2UgbWFrZSBhIG5ldyBOT1VWRUFVX0dFTV9ORVdfRklYRUQsIGFzIHlv dSBzdWdnZXN0ZWQpLgpDcnVjaWFsbHksIHRoZSBOT1VWRUFVX0dFTV9ORVdfRklYRUQgb3BlcmF0 aW9uIHNob3VsZG4ndCByZXN1bHQgaW4gdHJ5aW5nCnRvIGdldCBhIHZpcnR1YWwgYWRkcmVzcyBy ZWdpb24gYW5kIHRoZW4gZmFpbGluZyBiZWNhdXNlIGEgcHJldmlvdXMKb3BlcmF0aW9uIChzZWUg YWJvdmUpIGhhcyByZXNlcnZlZCBpdCBhbHJlYWR5LgoKVGhlIHVzZSBjYXNlIGlzIGV4YWN0bHkg YXMgeW91IGRlc2NyaWJlLiAgVGhlcmUgYXJlIGRhdGEgc3RydWN0dXJlcyBidWlsdAp1cCB0aGF0 IGNvbnRhaW4gQ1BVIHBvaW50ZXJzLCBhbmQgdGhvc2UgcG9pbnRlcnMgbmVlZCB0byBtYWtlIHNl bnNlIHRvCnRoZSBHUFUgYXMgd2VsbC4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KTm91dmVhdSBtYWlsaW5nIGxpc3QKTm91dmVhdUBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL25v dXZlYXUK