From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Christian_K=c3=b6nig?= Subject: Re: PCIe P2P access to GPU memory Date: Mon, 1 Oct 2018 20:12:52 +0200 Message-ID: <2eda0bdf-c532-9ef4-c66a-d85108092a20@amd.com> References: <5cf1c69bf7a14b4b7eaa9034ec6f70b1@nuetzel-hh.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from NAM01-BN3-obe.outbound.protection.outlook.com (mail-bn3nam01on0070.outbound.protection.outlook.com [104.47.33.70]) by gabe.freedesktop.org (Postfix) with ESMTPS id D746289E2A for ; Mon, 1 Oct 2018 18:13:11 +0000 (UTC) In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Dirk Eibach , Dieter@nuetzel-hh.de Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org SGkgRGlyaywKCj4gQW55IGlkZWFzPwpDb3VsZCBiZSBhbnl0aGluZy4gTW9zdCBsaWtlbHkgY2F1 c2UgaXMgdGhhdCBzb21lIGZ1bmN0aW9uIHRoaW5ncyB0aGUgCnR3byBkZXZpY2UgY2FuJ3QgY29t bXVuaWNhdGUgZGlyZWN0bHkgd2l0aCBlYWNoIG90aGVyLgoKUGxlYXNlIHByb3ZpZGUgYSBmdWxs IGRtZXNnIGFuZCAibHNwY2kgLXQgLW5uIC12IiBhcyBhdHRhY2htZW50IGFuZCBub3RlIAp3aGlj aCBkZXZpY2VzIHNob3VsZCBjb21tdW5pY2F0ZSB3aXRoIHdoaWNoLgoKSSdtIGN1cnJlbnRseSBv biB2YWNhdGlvbiBzbyBpdCBjb3VsZCB0YWtlIGEgd2hpbGUgdGlsbCBJIGhhdmUgdGltZSB0byAK bG9vayBkZWVwZXIgaW50byB0aGlzLgoKQ2hyaXN0aWFuLgoKQW0gMDEuMTAuMjAxOCB1bSAxNTow NyBzY2hyaWViIERpcmsgRWliYWNoOgo+IEhpIENocmlzdGlhbiwKPgo+IEkgdG9vayB0aGUgcmVw b3NpdG9yeSBEaWV0ZXIgc3VnZ2VzdGVkIGFuZCBnYXZlIGl0IGEgc3Bpbi4gSSBhbSBub3QKPiBz dXJlLCBpZiBJIGdvdCB0aGUgQVBJIHJpZ2h0Lgo+Cj4gSW4gdXNlcnNwYWNlIEkgY3JlYXRlIGEg Ym8gYW5kIGdldCBhIGZkLgo+IGJvID0gZ2JtX2JvX2NyZWF0ZShnYm0sIHcsIGgsIEdCTV9GT1JN QVRfQVJHQjg4ODgsIEdCTV9CT19VU0VfTElORUFSKTsKPiBkbWFidWZfZmQgPSBnYm1fYm9fZ2V0 X2ZkKGJvKTsKPgo+IFRoZW4gSSBwYXNzIHRoZSBmZCB0byB0aGUgZ3JhYmJlciBkcml2ZXIuIFRo ZXJlIEkgZ2V0IGEgc2d0LCB0aGF0IEkKPiB3YW50IHRvIHBhc3MgdG8gdGhlIERNQS1tYWNoaW5l Lgo+IHN0cnVjdCBkbWFfYnVmX2F0dGFjaF9pbmZvIGRtYV9idWZfYXR0YWNoX2luZm8gPSB7Cj4g ICAgICAuZGV2ID0gJmVuZ2luZS0+eGRldi0+cGRldi0+ZGV2LAo+ICAgICAgLnBlZXIycGVlciA9 IHRydWUsCj4gfTsKPiBkbWFfYnVmID0gZG1hX2J1Zl9nZXQoeGRtYV9kbWFfYnVmX2lvY3RsLmRt YV9idWZfZmQpOwo+IGRtYV9idWZfYXR0YWNoX2luZm8uZG1hYnVmID0gZG1hX2J1ZjsKPiBkbWFf YnVmX2F0dGFjaG1lbnQgPSBkbWFfYnVmX2F0dGFjaCgmZG1hX2J1Zl9hdHRhY2hfaW5mbyk7Cj4g c2d0ID0gZG1hX2J1Zl9tYXBfYXR0YWNobWVudChkbWFfYnVmX2F0dGFjaG1lbnQsIERNQV9UT19E RVZJQ0UpOwo+Cj4gQnV0IHRoZSBhZGRyZXNzZXMgaW4gdGhlIHNndCBkbyBub3QgbG9vayBsaWtl IFBDSWUgYWRkcmVzc2VzIGF0IGF0IGFsbC4KPgo+IEFueSBpZGVhcz8KPgo+IENoZWVycwo+IERp cmsKPiBBbSBTYS4sIDI5LiBTZXAuIDIwMTggdW0gMTE6NTMgVWhyIHNjaHJpZWIgRGlldGVyIE7D vHR6ZWwgPERpZXRlckBudWV0emVsLWhoLmRlPjoKPj4gSGVsbG8gRGlyaywKPj4KPj4gSSB0aGlu ayBDaHJpc3RpYW4gaXMgdGFsa2luZyBhYm91dCB0aGlzIGJyYW5jaDoKPj4KPj4gaHR0cHM6Ly9j Z2l0LmZyZWVkZXNrdG9wLm9yZy9+ZGVhdGhzaW1wbGUvbGludXgvbG9nLz9oPXAycAo+Pgo+PiBI aXMgJ2hvbWUnIGlzLCBoZXJlOgo+PiBodHRwczovL2NnaXQuZnJlZWRlc2t0b3Aub3JnL35kZWF0 aHNpbXBsZS9saW51eC8KPj4KPj4gSGFwcHkgaGFja2luZyEgOy0pCj4+Cj4+IERpZXRlcgo+Pgo+ PiBBbSAyOS4wOS4yMDE4IDEwOjE3LCBzY2hyaWViIERpcmsgRWliYWNoOgo+Pj4+IFRoaXMgaXMg d29yayBpbiBwcm9ncmVzcy4KPj4+Pgo+Pj4+IEkgcHVibGlzaGVkIHBhdGNoZXMgdG8gZW5hYmxl IERNQV9idWYgUDJQIGEgZmV3IG1vbnRocyBhZ28sIGJ1dCBub3cKPj4+PiBJJ20gd2FpdGluZyBm b3IgdGhlIFBDSSBzdWJzeXN0ZW0gdG8gcGljayB1cCBjb3JlIHN1cHBvcnQgZm9yIHRoaXMuCj4+ PiBHcmVhdCBuZXdzISBDYW4geW91IGdpdmUgbWUgYSBsaW5rIHRvIHRoaXMgc2VyaWVzIHNvIEkg Y2FuIGFscmVhZHkgaGF2ZQo+Pj4gYSBsb29rPwo+Pj4KPj4+PiBJIGNhbiBwcmVwYXJlIHlvdSBh IGJyYW5jaCBiYXNlZCBvbiBjdXJyZW50IHVwc3RyZWFtIGtlcm5lbCBuZXh0IHdlZWsKPj4+PiBp ZiB5b3Ugd2FudCB0byB0ZXN0IHRoaXMuCj4+PiBUaGF0IHdvdWxkIGJlIGF3ZXNvbWUsIHRoYW5r cy4KPj4+Cj4+PiBDaGVlcnMKPj4+IERpcmsKPj4+IF9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCj4+PiBkcmktZGV2ZWwgbWFpbGluZyBsaXN0Cj4+PiBkcmkt ZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCj4+PiBodHRwczovL2xpc3RzLmZyZWVkZXNrdG9w Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAoKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxA bGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxt YW4vbGlzdGluZm8vZHJpLWRldmVsCg==