From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Stultz Subject: Re: [EARLY RFC][PATCH] dma-buf: Add dma-buf heaps framework Date: Mon, 25 Feb 2019 22:20:12 -0800 Message-ID: References: <20190225143604.27511-1-afd@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by gabe.freedesktop.org (Postfix) with ESMTPS id AC27E89C1F for ; Tue, 26 Feb 2019 06:20:25 +0000 (UTC) Received: by mail-wm1-x341.google.com with SMTP id g20so383611wmh.5 for ; Mon, 25 Feb 2019 22:20:25 -0800 (PST) In-Reply-To: <20190225143604.27511-1-afd@ti.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: "Andrew F. Davis" Cc: Chenbo Feng , Alistair Strachan , Liam Mark , dri-devel List-Id: dri-devel@lists.freedesktop.org T24gTW9uLCBGZWIgMjUsIDIwMTkgYXQgNjozNiBBTSBBbmRyZXcgRi4gRGF2aXMgPGFmZEB0aS5j b20+IHdyb3RlOgo+Cj4gVGhpcyBmcmFtZXdvcmsgYWxsb3dzIGEgdW5pZmllZCB1c2Vyc3BhY2Ug aW50ZXJmYWNlIGZvciBkbWEtYnVmCj4gZXhwb3J0ZXJzLCBhbGxvd2luZyB1c2VybGFuZCB0byBh bGxvY2F0ZSBzcGVjaWZpYyB0eXBlcyBvZiBtZW1vcnkKPiBmb3IgdXNlIGluIGRtYS1idWYgc2hh cmluZy4KPgo+IEVhY2ggaGVhcCBpcyBnaXZlbiBpdHMgb3duIGRldmljZSBub2RlLCB3aGljaCBh IHVzZXIgY2FuIGFsbG9jYXRlCj4gYSBkbWEtYnVmIGZkIGZyb20gdXNpbmcgdGhlIERNQV9IRUFQ X0lPQ19BTExPQy4KPgo+IFNpZ25lZC1vZmYtYnk6IEFuZHJldyBGLiBEYXZpcyA8YWZkQHRpLmNv bT4KPiAtLS0KPgo+IEhlbGxvIGFsbCwKPgo+IEkgaGFkIGEgbGl0dGxlIGxlc3MgdGltZSBvdmVy IHRoZSB3ZWVrZW5kIHRoYW4gSSB0aG91Z2h0IEkgd291bGQgdG8KPiBjbGVhbiB0aGlzIHVwIG1v cmUgYW5kIGZpbmlzaCB0aGUgZmlyc3Qgc2V0IG9mIHVzZXIgaGVhcHMsIGJ1dCB3YW50ZWQKPiB0 byBnZXQgdGhpcyBvdXQgYW55d2F5Lgo+Cj4gSU9OIGluIGl0cyBjdXJyZW50IGZvcm0gYXNzdW1l cyBhIGxvdCBhYm91dCB0aGUgbWVtb3J5IGl0IGV4cG9ydHMgYW5kCj4gdGhlc2UgYXNzdW1wdGlv bnMgbGVhZCB0byByZXN0cmljdGlvbnMgb24gdGhlIGZ1bGwgcmFuZ2Ugb2Ygb3BlcmF0aW9ucwo+ IGRtYS1idWYncyBjYW4gcHJvZHVjZS4gRHVlIHRvIHRoaXMgaWYgd2UgYXJlIHRvIGFkZCB0aGlz IGFzIGFuIGV4dGVuc2lvbgo+IG9mIHRoZSBjb3JlIGRtYS1idWYgdGhlbiBpdCBzaG91bGQgb25s eSBiZSB0aGUgdXNlci1zcGFjZSBhZHZlcnRpc2VtZW50Cj4gYW5kIGFsbG9jYXRpb24gZnJvbnQt ZW5kLiBBbGwgZG1hLWJ1ZiBleHBvcnRpbmcgYW5kIG9wZXJhdGlvbiBuZWVkIHRvIGJlCj4gcGxh Y2VkIGluIHRoZSBjb250cm9sIG9mIHRoZSBleHBvcnRpbmcgaGVhcC4gVGhlIGNvcmUgYmVjb21l cyByYXRoZXIKPiBzbWFsbCwganVzdCBhIGZldyBodW5kcmVkIGxpbmVzIHlvdSBzZWUgaGVyZS4g VGhpcyBpcyBub3QgdG8gc2F5IHdlCj4gc2hvdWxkIG5vdCBwcm92aWRlIGhlbHBlcnMgdG8gbWFr ZSB0aGUgaGVhcCBleHBvcnRlcnMgbW9yZSBzaW1wbGUsIGJ1dAo+IHRoZXkgc2hvdWxkIG9ubHkg YmUgaGVscGVycyBhbmQgbm90IGVuZm9yY2VkIGJ5IHRoZSBjb3JlIGZyYW1ld29yay4KPgo+IEJh c2ljIHVzZSBtb2RlbCBoZXJlIGlzIGFuIGV4cG9ydGVyIChkZWRpY2F0ZWQgaGVhcCBtZW1vcnkg ZHJpdmVyLCBDTUEsCj4gU3lzdGVtLCBldGMuKSByZWdpc3RlcnMgd2l0aCB0aGUgZnJhbWV3b3Jr IGJ5IHByb3ZpZGluZyBhIHN0cnVjdAo+IGRtYV9oZWFwX2luZm8gd2hpY2ggZ2l2ZXMgdXMgdGhl IG5lZWRlZCBpbmZvIHRvIGV4cG9ydCB0aGlzIGhlYXAgdG8KPiB1c2Vyc3BhY2UgYXMgYSBkZXZp Y2Ugbm9kZS4gTmV4dCBhIHVzZXIgd2lsbCByZXF1ZXN0IGFuIGFsbG9jYXRpb24sCj4gdGhlIElP Q1RMIGlzIHBhcnNlZCBhbmQgdGhlIHJlcXVlc3QgbWFkZSB0byBhIGhlYXAgcHJvdmlkZWQgYWxs b2MoKSBvcC4KPiBUaGUgaGVhcCBzaG91bGQgcmV0dXJuIHRoZSBmaWxsZWQgb3V0IHN0cnVjdCBk bWFfaGVhcF9idWZmZXIsIGluY2x1ZGluZwo+IGV4cG9ydGluZyB0aGUgYnVmZmVyIGFzIGEgZG1h LWJ1Zi4gVGhpcyBkbWEtYnVmIHdlIHRoZW4gcmV0dXJuIHRvIHRoZQo+IHVzZXIgYXMgYSBmZC4g QnVmZmVyIGZyZWUgaXMgc3RpbGwgYSBiaXQgb3BlbiBhcyB3ZSBuZWVkIHRvIHVwZGF0ZSBzb21l Cj4gc3RhdHMgYW5kIGZyZWUgc29tZSBtZW1vcnksIGJ1dCB0aGUgcmVsZWFzZSBvcGVyYXRpb24g aXMgY29udHJvbGxlZCBieQo+IHRoZSBoZWFwIGV4cG9ydGVyLCBzbyBzb21lIGhvb2sgd2lsbCBo YXZlIHRvIGJlIGNyZWF0ZWQuCj4KPiBJdCBhbGwgbmVlZHMgYSBiaXQgbW9yZSB3b3JrLCBhbmQg SSdtIHN1cmUgSSdsbCBmaW5kIG1pc3NpbmcgcGFydHMgd2hlbgo+IEkgYWRkIHNvbWUgbW9yZSBo ZWFwcywgYnV0IGhvcGVmdWxseSB0aGlzIGZyYW1ld29yayBpcyBzaW1wbGUgZW5vdWdoIHRoYXQK PiBpdCBkb2VzIG5vdCBpbXBlZGUgdGhlIGltcGxlbWVudGF0aW9uIG9mIGFsbCBmdW5jdGlvbmFs aXR5IG9uY2UgcHJvdmlkZWQKPiBieSBJT04gKHNocmlua2VyLCBkZWxheWVkIGZyZWUpLCBub3Ig YW55IG5ldyBmdW5jdGlvbmFsaXR5IG5lZWRlZCBmb3IKPiBmdXR1cmUgaGVhcCBleHBvcnRpbmcg ZGV2aWNlcy4KCkkgdG9vayB5b3VyIHBhdGNoIGhlcmUsIG1hZGUgc29tZSBzbWFsbCByZXdvcmtz IGFzIEkgbWVudGlvbmVkCmVhcmxpZXIsIGFuZCB0cmllZCB0byBhZGQgc29tZSBnZW5lcmljIGhl bHBlcnMgYW5kIHRoZSBzeXN0ZW0gYW5kIGNtYQpoZWFwcyBpbnRlZ3JhdGVkLgoKWW91IGNhbiBm aW5kIHRoZSBjaGFuZ2VzIGFkZGVkIG9uIHRvcCBvZiB5b3VyIHBhdGNoIGhlcmU6Cmh0dHBzOi8v Z2l0LmxpbmFyby5vcmcvcGVvcGxlL2pvaG4uc3R1bHR6L2FuZHJvaWQtZGV2LmdpdC9sb2cvP2g9 ZGV2L2RtYS1idWYtaGVhcAoKSSBwcm9wb3NlIHdlIHNob3VsZCBzcXVpc2ggZG93biB0aGUgZmly c3QgdGhyZWUgY2hhbmdlcyBkb3duIGludG8gdGhlCmNvcmUgcGF0Y2ggaWYgeW91IGFncmVlLgoK VGhlIGhlbHBlciBmdW5jdGlvbnMgbmVlZCBzb21lIHdvcmsgYW5kIGNsZWFudXAsIHJpZ2h0IG5v dyBJJ20gb25seQpleHBvc2luZyB0aGUgZG1hYnVmIG9wcyBhbmQgcmVhbGlzdGljYWxseSBmb2xr cyB3aWxsIHByb2JhYmx5IHdhbnQgdG8KZmlsbCBwYXJ0IG9mIHRoZSBvcHMgd2l0aCBjdXN0b20g dGhpbmdzLgoKSXQgYm9vdHMgdy8gQU9TUCwgYW5kIGFsbG9jYXRpb25zIHNlZW0gdG8gd29yaywg YnV0IHRoZXJlJ3Mgc29tZXRoaW5nCndyb25nIHdpdGggdGhlIGRtYWJ1ZiBtbWFwaW5nIHdoaWNo IGNhc3VlcyB0aGUgaG9tZXNjcmVlbiB0byBjcmFzaApvdmVyIGFuZCBvdmVyLgoodXNlcmxhbmQg cGF0Y2hlcyB1cGRhdGVkIGhlcmU6Cmh0dHBzOi8vYW5kcm9pZC1yZXZpZXcuZ29vZ2xlc291cmNl LmNvbS9jL2RldmljZS9saW5hcm8vaGlrZXkvKy85MDk0MzYpCgpCdXQgdGhhdCdzIGFib3V0IGFz IGZhciBhcyBJIGNhbiBkbyB0b25pZ2h0LCBzbyBJJ20gY3Jhc2hpbmcgYW5kIHdpbGwKc2VlIHdo YXQgeW91IHRoaW5rIHRvbW9ycm93LiA6KQoKdGhhbmtzCi1qb2huCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJp LWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==