From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: PCIe P2P access to GPU memory Date: Wed, 3 Oct 2018 11:06:07 +0200 Message-ID: <20181003090607.GA23685@phenom.ffwll.local> References: <856f3ee3-5f5c-f8a3-d9e2-d8f894aaf967@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by gabe.freedesktop.org (Postfix) with ESMTPS id 901696E170 for ; Wed, 3 Oct 2018 09:06:14 +0000 (UTC) Received: by mail-ed1-x534.google.com with SMTP id j62-v6so4621193edd.7 for ; Wed, 03 Oct 2018 02:06:14 -0700 (PDT) Content-Disposition: inline In-Reply-To: <856f3ee3-5f5c-f8a3-d9e2-d8f894aaf967@amd.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: "Koenig, Christian" Cc: "dirk.eibach@googlemail.com" , dri-devel List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBPY3QgMDMsIDIwMTggYXQgMDg6NTQ6NDRBTSArMDAwMCwgS29lbmlnLCBDaHJpc3Rp YW4gd3JvdGU6Cj4gQW0gMDMuMTAuMjAxOCB1bSAwOToxNCBzY2hyaWViIERhbmllbCBWZXR0ZXI6 Cj4gPiBPbiBTYXQsIFNlcCAyOSwgMjAxOCBhdCA5OjI3IEFNIEtvZW5pZywgQ2hyaXN0aWFuCj4g PiA8Q2hyaXN0aWFuLktvZW5pZ0BhbWQuY29tPiB3cm90ZToKPiA+PiBUaGlzIGlzIHdvcmsgaW4g cHJvZ3Jlc3MuCj4gPj4KPiA+PiBJIHB1Ymxpc2hlZCBwYXRjaGVzIHRvIGVuYWJsZSBETUFfYnVm IFAyUCBhIGZldyBtb250aHMgYWdvLCBidXQgbm93IEknbSB3YWl0aW5nIGZvciB0aGUgUENJIHN1 YnN5c3RlbSB0byBwaWNrIHVwIGNvcmUgc3VwcG9ydCBmb3IgdGhpcy4KPiA+Pgo+ID4+IEkgY2Fu IHByZXBhcmUgeW91IGEgYnJhbmNoIGJhc2VkIG9uIGN1cnJlbnQgdXBzdHJlYW0ga2VybmVsIG5l eHQgd2VlayBpZiB5b3Ugd2FudCB0byB0ZXN0IHRoaXMuCj4gPiBUaHJlYWQgaGlqYWNrLCBzaW5j ZSBJIGp1c3QgcmVhZCB0aGUgbHduIGFydGljbGUgb24gcDJwIGZvciBzdG9yYWdlIGZvbGtzOgo+ ID4KPiA+IGh0dHBzOi8vbHduLm5ldC9BcnRpY2xlcy83NjcyODEvCj4gPgo+ID4gVG90YWxseSBk b2Vzbid0IG1hdGNoIHdoYXQgSSByZW1lbWJlciBvZiB5b3VyIGRtYS1idWYgcDJwIHdvcmsuIERv IHdlCj4gPiBuZWVkIHRvIHJld29yaywgb3IgaXMgdGhpcyBzb21lIGtpbmQgb2YgaGlnaGVyLWxl dmVsIGludGVyZmFjZSBvbiB0b3AKPiA+IG9mIHRoZSByYXcgcDJwIHBjaSBzdHVmZj8gT3IgZG8g SSBtaXNyZW1lbWJlci4KPiAKPiBUaGUgUDJQIGZyb20gdGhlIHN0b3JhZ2UgZm9sa3MgYXJlIHNv bWUgbWl4IG9mIHJhdyBwMnAgY2FwYWJpbGl0eSAKPiBkZXRlY3Rpb24gZm9yIFBDSSBhbmQgaGln aGVyIGxldmVsIGludGVyZmFjZS4KPiAKPiBJJ20gYWN0dWFsbHkgd2FpdGluZyBmb3IgdGhhdCBz dHVmZiB0byBsYW5kIHRvIGV4dHJhY3QgdGhlIHAycCAKPiBjYXBhYmlsaXR5IGRldGVjdGlvbiBh bmQgdXNlIGl0IGZvciB0aGlzIERNQS1idWYgc3R1ZmYgYXMgd2VsbC4KPiAKPiBBbHRlcm5hdGl2 ZSB3b3VsZCBiZSB0byBjb252aW5jZSBMb2dhbiB0byBleHRyYWN0IHRoZSBjYXBhYmlsaXR5IAo+ IGRldGVjdGlvbiBpbiBoaXMgcGF0Y2ggc2V0IGFzIHdlbGwsIGJ1dCBzbyBmYXIgaGUgd2Fzbid0 IHZlcnkga2VlbiBhYm91dCAKPiB0aGF0LgoKU28gbm8gcGxhbiB0byBtYWtlIGRtYS1idWYgc29t ZSBraW5kIG9mIG9yY2hlc3RyYXRvciBhbmQgdXNlIHRoZSBwMnAKbWFwX3NnIHN0dWZmPyBUaGF0 IHNlZW1zIHRvIGJlIHRoZSBuZXcvYWRkaXRpb25hbCBiaXRzIEkgaGF2ZW4ndCBzZWVuIHlldCwK YW5kIEknbSB3b25kZXJlZCBob3cgd2Ugc2hvdWxkIGZpdCBkbWEtYnVmIGludG8gdGhhdCBwaWN0 dXJlLgotRGFuaWVsCgo+IAo+IENocmlzdGlhbi4KPiAKPiA+Cj4gPiBUaGFua3MsIERhbmllbAo+ ID4KPiA+PiBSZWdhcmRzLAo+ID4+IENocmlzdGlhbi4KPiA+Pgo+ID4+IEFtIDI5LjA5LjIwMTgg MDk6MDEgc2NocmllYiBEaXJrIEVpYmFjaCA8ZGlyay5laWJhY2hAZ29vZ2xlbWFpbC5jb20+Ogo+ ID4+IEkgd2FudCB0byBhY2Nlc3MgR1BVIFZSQU0gdmlhIFBDSWUgUDJQIGFjY2VzcywgbGlrZSBE aXJlY3RHTUEgYnV0IHdpdGgKPiA+PiBtYWlubGluZSBkcml2ZXJzLgo+ID4+IEkgY2FuIGFjcXVp cmUgYSBkbWFidWYgZnJvbSB0aGUgR1BVIGFuZCBwYXNzIGl0IHRvIG15IFBDSWUKPiA+PiBmcmFt ZWdyYWJiZXIuIEJ1dCBJIGRvbid0IHNlZSBhIHdheSB0byBnZXQgdGhlIFBDSWUgYnVzIGFkZHJl c3Mgb2YgdGhlCj4gPj4gdmlkZW8gbWVtb3J5IHdoaWNoIEkgbmVlZCBmb3IgdGhlIFAyUCB0cmFu c2Zlci4gSXMgdGhlcmUgYWxyZWFkeSBhbnkKPiA+PiBpbmZyYXN0cnVjdHVyZSBpbiBwbGFjZSBm b3IgZG9pbmcgdGhpcz8gSWYgbm90LCB3aGF0IHdvdWxkIGJlIHRoZQo+ID4+IHJpZ2h0IHdheSB0 byBpbXBsZW1lbnQgdGhpcz8gQWRkIGFub3RoZXIgY2FsbGJhY2sgdG8gdGhlIGRtYWJ1Zgo+ID4+ IHN0cnVjdD8KPiA+Pgo+ID4+IENoZWVycwo+ID4+IERpcmsKPiA+PiBfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwo+ID4+IGRyaS1kZXZlbCBtYWlsaW5nIGxp c3QKPiA+PiBkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCj4gPj4gaHR0cHM6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwKPiA+Cj4gPgo+IAoK LS0gCkRhbmllbCBWZXR0ZXIKU29mdHdhcmUgRW5naW5lZXIsIEludGVsIENvcnBvcmF0aW9uCmh0 dHA6Ly9ibG9nLmZmd2xsLmNoCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbAo=