From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 4/8] dma-buf: add peer2peer flag Date: Tue, 3 Apr 2018 20:08:32 +0200 Message-ID: <20180403180832.GZ3881@phenom.ffwll.local> References: <20180325110000.2238-1-christian.koenig@amd.com> <20180325110000.2238-4-christian.koenig@amd.com> <20180329065753.GD3881@phenom.ffwll.local> <8b823458-8bdc-3217-572b-509a28aae742@gmail.com> <20180403090909.GN3881@phenom.ffwll.local> <20180403170645.GB5935@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20180403170645.GB5935-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: Jerome Glisse Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, christian.koenig-5C7GfCeVMHo@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org T24gVHVlLCBBcHIgMDMsIDIwMTggYXQgMDE6MDY6NDVQTSAtMDQwMCwgSmVyb21lIEdsaXNzZSB3 cm90ZToKPiBPbiBUdWUsIEFwciAwMywgMjAxOCBhdCAxMTowOTowOUFNICswMjAwLCBEYW5pZWwg VmV0dGVyIHdyb3RlOgo+ID4gT24gVGh1LCBNYXIgMjksIDIwMTggYXQgMDE6MzQ6MjRQTSArMDIw MCwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiA+ID4gQW0gMjkuMDMuMjAxOCB1bSAwODo1NyBz Y2hyaWViIERhbmllbCBWZXR0ZXI6Cj4gPiA+ID4gT24gU3VuLCBNYXIgMjUsIDIwMTggYXQgMTI6 NTk6NTZQTSArMDIwMCwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiA+ID4gPiA+IEFkZCBhIHBl ZXIycGVlciBmbGFnIG5vdGluZyB0aGF0IHRoZSBpbXBvcnRlciBjYW4gZGVhbCB3aXRoIGRldmlj ZQo+ID4gPiA+ID4gcmVzb3VyY2VzIHdoaWNoIGFyZSBub3QgYmFja2VkIGJ5IHBhZ2VzLgo+ID4g PiA+ID4gCj4gPiA+ID4gPiBTaWduZWQtb2ZmLWJ5OiBDaHJpc3RpYW4gS8O2bmlnIDxjaHJpc3Rp YW4ua29lbmlnQGFtZC5jb20+Cj4gPiA+ID4gVW0gc3RyaWN0bHkgc3BlYWtpbmcgdGhleSBhbGwg c2hvdWxkLCBidXQgdHRtIG5ldmVyIGJvdGhlcmVkIHRvIHVzZSB0aGUKPiA+ID4gPiByZWFsIGlu dGVyZmFjZXMgYnV0IGp1c3QgaGFja2VkIGFyb3VuZCB0aGUgcHJvdmlkZWQgc2cgbGlzdCwgZ3Jh YmJpbmcgdGhlCj4gPiA+ID4gdW5kZXJseWluZyBzdHJ1Y3QgcGFnZXMsIHRoZW4gcmVidWlsZGlu ZyZyZW1hcHBpbmcgdGhlIHNnIGxpc3QgYWdhaW4uCj4gPiA+IAo+ID4gPiBBY3R1YWxseSB0aGF0 IGlzbid0IGNvcnJlY3QuIFRUTSBjb252ZXJ0cyB0aGVtIHRvIGEgZG1hIGFkZHJlc3MgYXJyYXkK PiA+ID4gYmVjYXVzZSBkcml2ZXJzIG5lZWQgaXQgbGlrZSB0aGlzIChhdCBsZWFzdCBub3V2ZWF1 LCByYWRlb24gYW5kIGFtZGdwdSkuCj4gPiA+IAo+ID4gPiBJJ3ZlIGZpeGVkIHJhZGVvbiBhbmQg YW1kZ3B1IHRvIGJlIGFibGUgdG8gZGVhbCB3aXRob3V0IGl0IGFuZCBtYWlsZWQgd2l0aAo+ID4g PiBCZW4gYWJvdXQgbm91dmVhdSwgYnV0IHRoZSBvdXRjb21lIGlzIHRoZXkgZG9uJ3QgcmVhbGx5 IGtub3cuCj4gPiA+IAo+ID4gPiBUVE0gaXRzZWxmIGRvZXNuJ3QgaGF2ZSBhbnkgbmVlZCBmb3Ig dGhlIHBhZ2VzIG9uIGltcG9ydGVkIEJPcyAoeW91IGNhbid0Cj4gPiA+IG1tYXAgdGhlbSBhbnl3 YXkpLCB0aGUgcmVhbCB1bmRlcmx5aW5nIHByb2JsZW0gaXMgdGhhdCBzZyB0YWJsZXMgZG9lc24n dAo+ID4gPiBwcm92aWRlIHdoYXQgZHJpdmVycyBuZWVkLgo+ID4gPiAKPiA+ID4gSSB0aGluayB3 ZSBjb3VsZCByYXRoZXIgZWFzaWx5IGZpeCBzZyB0YWJsZXMsIGJ1dCB0aGF0IGlzIGEgdG90YWxs eSBzZXBhcmF0ZQo+ID4gPiB0YXNrLgo+ID4gCj4gPiBMb29raW5nIGF0IHBhdGNoIDgsIHRoZSBz ZyB0YWJsZSBzZWVtcyBwZXJmZWN0bHkgc3VmZmljaWVudCB0byBjb252ZXkgdGhlCj4gPiByaWdo dCBkbWEgYWRkcmVzc2VzIHRvIHRoZSBpbXBvcnRlci4gT2Zjb3Vyc2UgdGhlIGV4cG9ydGVyIGhh cyB0byBzZXQgdXAKPiA+IHRoZSByaWdodCBraW5kIG9mIGlvbW11IG1hcHBpbmdzIHRvIG1ha2Ug dGhpcyB3b3JrLgo+ID4gCj4gPiA+ID4gVGhlIGVudGlyZSBwb2ludCBvZiB1c2luZyBzZyBsaXN0 cyB3YXMgZXhhY3RseSB0byBhbGxvdyB0aGlzIHVzZSBjYXNlIG9mCj4gPiA+ID4gcGVlcjJwZWVy IGRtYSAob3Igd2VsbCBpbiBnZW5lcmFsIGhhdmUgc3BlY2lhbCBleHBvcnRlcnMgd2hpY2ggbWFu YWdlZAo+ID4gPiA+IG1lbW9yeS9JTyByYW5nZXMgbm90IGJhY2tlZCBieSBzdHJ1Y3QgcGFnZSku IFNvIGVzc2VudGlhbGx5IHlvdSdyZSBoYXZpbmcKPiA+ID4gPiBhICJJJ20gdG90YWxseSBub3Qg YnJva2VuIGZsYWciIGhlcmUuCj4gPiA+IAo+ID4gPiBObywgaW5kZXBlbmRlbnQgb2YgbmVlZGVk IHN0cnVjdCBwYWdlIHBvaW50ZXJzIHdlIG5lZWQgdG8gbm90ZSBpZiB0aGUKPiA+ID4gZXhwb3J0 ZXIgY2FuIGhhbmRsZSBwZWVyMnBlZXIgc3R1ZmYgZnJvbSB0aGUgaGFyZHdhcmUgc2lkZSBpbiBn ZW5lcmFsLgo+ID4gPiAKPiA+ID4gU28gd2hhdCBJJ3ZlIGRpZCBpcyBqdXN0IHRvIHNldCBwZWVy MnBlZXIgYWxsb3dlZCBvbiB0aGUgaW1wb3J0ZXIgYmVjYXVzZSBvZgo+ID4gPiB0aGUgZHJpdmVy IG5lZWRzIGFuZCBjbGVhciBpdCBpbiB0aGUgZXhwb3J0ZXIgaWYgdGhlIGhhcmR3YXJlIGNhbid0 IGhhbmRsZQo+ID4gPiB0aGF0Lgo+ID4gCj4gPiBUaGUgb25seSB0aGluZyB0aGUgaW1wb3J0ZXIg c2VlbXMgdG8gZG8gaXMgY2FsbCB0aGUKPiA+IHBjaV9wZWVyX3RyYWZmaWNfc3VwcG9ydGVkLCB3 aGljaCB0aGUgZXhwb3J0ZXIgY291bGQgY2FsbCB0b28uIFdoYXQgYW0gSQo+ID4gbWlzc2luZyAo c2luY2UgdGhlIHN0dXJjdF9wYWdlIHN0dWZmIHNvdW5kcyBsaWtlIGl0J3MgZml4ZWQgYWxyZWFk eSBieQo+ID4geW91KT8KPiA+IC1EYW5pZWwKPiAKPiBBRkFJSyBMb2dhbiBwYXRjaHNldCByZXF1 aXJlIHRvIHJlZ2lzdGVyIGFuZCBpbml0aWFsaXplIHN0cnVjdCBwYWdlCj4gZm9yIHRoZSBkZXZp Y2UgbWVtb3J5IHlvdSB3YW50IHRvIG1hcCAoZXhwb3J0IGZyb20gZXhwb3J0ZXIgcG9pbnQgb2YK PiB2aWV3KS4KPiAKPiBXaXRoIEdQVSB0aGlzIGlzbid0IHNvbWV0aGluZyB3ZSB3YW50LCBzdHJ1 Y3QgcGFnZSBpcyA+fj0gMl42IHNvIGZvcgo+IDRHQiBHUFUgPSAyXjYqMl4zMi8yXjEyID0gMl4y NiA9IDY0TUIgb2YgUkFNCj4gOEdCIEdQVSA9IDJeNioyXjMzLzJeMTIgPSAyXjI3ID0gMTI4TUIg b2YgUkFNCj4gMTZHQiBHUFUgPSAyXjYqMl4zNC8yXjEyID0gMl4yOCA9IDI1Nk1CIG9mIFJBTQo+ IDMyR0IgR1BVID0gMl42KjJeMzQvMl4xMiA9IDJeMjkgPSA1MTJNQiBvZiBSQU0KPiAKPiBBbGwg dGhpcyBpcyBtb3N0bHkgd2FzdGVkIGFzIG9ubHkgYSBzbWFsbCBzdWItc2V0ICh0aGF0IGNhbiBu b3QgYmUKPiBjb25zdHJhaW50IHRvIHNwZWNpZmljIHJhbmdlKSB3aWxsIGV2ZXIgYmUgZXhwb3J0 ZWQgYXQgYW55IHBvaW50IGluCj4gdGltZS4gRm9yIEdQVSB3b3JrIGxvYWQgdGhpcyBpcyBoYXJk bHkganVzdGlmaWFibGUsIGV2ZW4gZm9yIEhNTSBpCj4gZG8gbm90IHBsYW4gdG8gcmVnaXN0ZXIg YWxsIHRob3NlIHBhZ2VzLgo+IAo+IEhlbmNlIHdoeSBpIGFyZ3VlIHRoYXQgZG1hX21hcF9yZXNv dXJjZSgpIGxpa2UgdXNlIGJ5IENocmlzdGlhbiBpcwo+IGdvb2QgZW5vdWdoIGZvciB1cy4gUGVv cGxlIHRoYXQgY2FyZSBhYm91dCBTRyBjYW4gZml4IHRoYXQgYnV0IGkKPiByYXRoZXIgbm90IGhh dmUgdG8gZGVwZW5kIG9uIHRoYXQgYW5kIHdhc3RlIHN5c3RlbSBtZW1vcnkuCgpJIGRpZCBub3Qg bWVhbiB5b3Ugc2hvdWxkIGRtYV9tYXBfc2cvcGFnZS4gSSBqdXN0IG1lYW50IHRoYXQgdXNpbmcK ZG1hX21hcF9yZXNvdXJjZSB0byBmaWxsIG9ubHkgdGhlIGRtYSBhZGRyZXNzIHBhcnQgb2YgdGhl IHNnIHRhYmxlIHNlZW1zCnBlcmZlY3RseSBzdWZmaWNpZW50LiBBbmQgdGhhdCdzIGV4YWN0bHkg d2h5IHRoZSBpbXBvcnRlciBnZXRzIGFuIGFscmVhZHkKbWFwcGVkIHNnIHRhYmxlLCBzbyB0aGF0 IGl0IGRvZXNuJ3QgaGF2ZSB0byBjYWxsIGRtYV9tYXBfc2cgb24gc29tZXRoaW5nCnRoYXQgZG1h X21hcF9zZyBjYW4ndCBoYW5kbGUuCgpBc3N1bWluZyB5b3UgZ2V0IGFuIHNnIHRhYmxlIHRoYXQn cyBiZWVuIG1hcHBpbmcgYnkgY2FsbGluZyBkbWFfbWFwX3NnIHdhcwphbHdheXMgYSBiaXQgYSBj YXNlIG9mIGJlbmRpbmcgdGhlIGFic3RyYWN0aW9uIHRvIGF2b2lkIHR5cGluZyBjb2RlLiBUaGUK b25seSB0aGluZyBhbiBpbXBvcnRlciBldmVyIHNob3VsZCBoYXZlIGRvbmUgaXMgbG9vayBhdCB0 aGUgZG1hIGFkZHJlc3NlcwppbiB0aGF0IHNnIHRhYmxlLCBub3RoaW5nIGVsc2UuCgpBbmQgcDJw IHNlZW1zIHRvIHBlcmZlY3RseSBmaXQgaW50byB0aGlzIChzdXJwcmlzZSwgaXQgd2FzIG1lYW50 IHRvKS4KVGhhdCdzIHdoeSBJIHN1Z2dlc3RlZCB3ZSBhbm5vdGF0ZSB0aGUgYnJva2VuIGltcG9y dGVycyB3aG8gYXNzdW1lIHRoZSBzZwp0YWJsZSBpcyBtYXBwZWQgdXNpbmcgZG1hX21hcF9zZyBv ciBoYXMgYSBzdHJ1Y3RfcGFnZSBiYWNraW5nIHRoZSBtZW1vcnkKKGJ1dCB0aGVyZSBkb2Vzbid0 IHNlZW0gdG8gYmUgYW55IGxlZnQgaXQgc2VlbXMpIGluc3RlYWQgb2YgYW5ub3RhdGluZyB0aGUK b25lcyB0aGF0IGFyZW4ndCBicm9rZW4gd2l0aCBhIGZsYWcgdGhhdCdzIGNvbmZ1c2luZyAtIHlv dSBjb3VsZCBhbHNvIGhhdmUKYSBkbWEtYnVmIHNndCB0aGF0IHBvaW50cyBhdCBzb21lIG90aGVy IG1lbW9yeSB0aGF0IGRvZXNuJ3QgaGF2ZSBzdHJ1Y3QKcGFnZXMgYmFja2luZyBpdC4KCkFzaWRl OiBBdCBsZWFzdCBpbnRlcm5hbGx5IGluIGk5MTUgd2UndmUgYmVlbiB1c2luZyB0aGlzIGZvcmV2 ZXIgZm9yIG91cgpvd24gcHJpdmF0ZS9zdG9sZW4gbWVtb3J5LiBVbmZvcnR1bmF0ZWx5IG5vIG90 aGVyIGRldmljZSBjYW4gYWNjZXNzIHRoYXQKcmFuZ2Ugb2YgbWVtb3J5LCB3aGljaCBpcyB3aHkg d2UgZG9uJ3QgYWxsb3cgaXQgdG8gYmUgaW1wb3J0ZWQgdG8gYW55dGhpbmcKYnV0IGk5MTUgaXRz ZWxmLiBCdXQgaWYgdGhhdCBodyByZXN0cmljdGlvbiBkb2Vzbid0IGV4aXN0LCBpdCdkIHdvdWxk CndvcmsuCi1EYW5pZWwKLS0gCkRhbmllbCBWZXR0ZXIKU29mdHdhcmUgRW5naW5lZXIsIEludGVs IENvcnBvcmF0aW9uCmh0dHA6Ly9ibG9nLmZmd2xsLmNoCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmFtZC1nZnggbWFpbGluZyBsaXN0CmFtZC1nZnhAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4v bGlzdGluZm8vYW1kLWdmeAo=