From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Hellstrom Subject: Re: about mmap dma-buf and sync Date: Mon, 24 Aug 2015 11:50:45 +0200 Message-ID: <55DAE8F5.6010302@shipmail.org> References: <55D50442.5080102@intel.com> <55D57837.4080301@vmware.com> <55D7AF11.9090809@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx2.bahnhof.se (mx2.bahnhof.se [213.80.101.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2A9666E86A for ; Mon, 24 Aug 2015 02:50:57 -0700 (PDT) In-Reply-To: <55D7AF11.9090809@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Tiago Vignatti Cc: Daniel Vetter , Thomas Hellstrom , "dri-devel@lists.freedesktop.org" List-Id: dri-devel@lists.freedesktop.org SGkhCgpPbiAwOC8yMi8yMDE1IDAxOjA2IEFNLCBUaWFnbyBWaWduYXR0aSB3cm90ZToKPiBIaSBi YWNrIQo+Cj4gT24gMDgvMjAvMjAxNSAwMzo0OCBBTSwgVGhvbWFzIEhlbGxzdHJvbSB3cm90ZToK Pj4gSGksIFRpYWdvIQo+Cj4gU29tZXRoaW5nIHRoYXQgdGhlIENocm9tZSBPUyBmb2xrcyB0b2xk IG1lIHRvZGF5IGlzIHdoZXRoZXIgd2UgY291bGQKPiBjaGFuZ2UgdGhlIHN5bmMgQVBJIHRvIHVz ZSBhIHN5c2NhbGwgZm9yIHRoYXQgaW5zdGVhZC4gUmVhc29uIGZvciB0aGF0Cj4gaXMgdG8gZXZl bnR1YWxseSBmaXQgdGhpcyBpbiBuaWNlbHkgaW4gdGhlaXIgc2FuZGJveCBhcmNoaXRlY3R1cmUK PiByZXF1aXJlbWVudHMsIHNvIHlldCBhbm90aGVyIGlvY3RsIHdvdWxkbid0IG5lZWQgdG8gYmUg d2hpdGUtbGlzdGVkCj4gZm9yIHRoZSB1bnByaXZpbGVkZ2VkIHByb2Nlc3MuCj4KPiBIb3cgZG9l cyB0aGF0IGNoYW5nZSB0aGUgZ2FtZSwgZm9yIGV4YW1wbGUgcmVnYXJkaW5nIHRoZSBkZXRhaWxz IHdlCj4gYmVlbiB0YWxraW5nIGhlcmUgYWJvdXQgbWFrZSB0aGUgc3luYyBtYW5kYXRvcnk/IENh biB3ZSByZXVzZSwgc2F5Cj4gbXN5bmMoMikgZm9yIHRoYXQgZm9yIGV4YW1wbGU/CgpUbyBtZSwg dGhlIG1lY2hhbmlzbSBpdHNlbGYgaXMgdGhlIG1vc3QgaW1wb3J0YW50LCBidXQgSSB0aGluayBp dCBzaG91bGQKYmUgbXVjaCBlYXNpZXIgdG8gaGF2ZSBhbiBJT0NUTCBhY2NlcHRlZCBzaW5jZSB0 aGUgZnVuY3Rpb25hbGl0eSBpcwpsaW1pdGVkIHRvIGRtYS1idWZzLgoKSW4gYW55IGNhc2UsIElk ZWFsbHkgSSdkIHdhbnQgdGhlIHN0cnVjdCBkbWFfYnVmX3N5bmMgbG9vayBzb21ldGhpbmcgbGlr ZQoKZW51bSBkbWFfYnVmX3N5bmNfZmxhZ3MgewoJRE1BX0JVRl9TWU5DX1JFQUQgPSAoMSA8PCAw KSwKCURNQV9CVUZfU1lOQ19XUklURSA9ICgyIDw8IDApLAoJRE1BX0JVRl9TWU5DX1JXID0gKDMg PDwgMCksCglETUFfQlVGX1NZTkNfU1RBUlQgPSAoMCA8PCAyKSwKCURNQV9CVUZfU1lOQ19FTkQg PSAoMSA8PCAyKSwKCglETUFfQlVGX1NZTkNfVkFMSURfRkxBR1NfTUFTSyA9IERNQV9CVUZfU1lO Q19SVyB8CgkJRE1BX0JVRl9TWU5DX0VORAp9OwoKCi8qIGJlZ2luL2VuZCBkbWEtYnVmIGZ1bmN0 aW9ucyB1c2VkIGZvciB1c2Vyc3BhY2UgbW1hcC4gKi8Kc3RydWN0IGRtYV9idWZfc3luYyB7Cgll bnVtIGRtYV9idWZfc3luY19mbGFncyBmbGFnczsKCV9fdTY0IHg7CglfX3U2NCB3aWR0aDsKCgkv KiAyRCBTeW5jIHBhcmFtZXRlcnMgKi8KCV9fdTY0IHN0cmlkZTsKCV9fdTY0IHk7CglfX3U2NCBo ZWlnaHQ7Cgp9CgoKU28gYWdhaW4sIHdoeSB1c2UgYSAyRCBzeW5jIGluIHRoZSBmaXJzdCBwbGFj ZSB3aGVuIGl0J3MgcHJvYmFibHkgcG9zc2libGUgdG8gYmF0Y2ggMUQgc3luY3MgaW4gdGhlIGRy aXZlcj8KSXQgYWxsIGJvaWxzIGRvd24gdG8gdGhlIG51bWJlciBvZiBzeXNjYWxscyByZXF1aXJl ZCwgYW5kIGFsc28gdGhlIGZhY3QgdGhhdCBpdCdzIHByb2JhYmx5IG5vdCB0cml2aWFsIHRvIGJh dGNoIHN5bmMgY2FsbHMgaW4gdGhlIHJlYWQtd3JpdGUgY2FzZS4gT25lIGNhbiwgYWdhaW4sIGFy Z3VlIHRoYXQgdGhlcmUgbWlnaHQgYmUgM0QgY2FzZXMgb3Igb3RoZXIgb2JzY3VyZSBzeW5jIGNh c2VzLApidXQgaW4gdGhhdCBjYXNlLCBsZXQncyBpbXBsZW1lbnQgdGhlbSBpbiB0aGUgZnV0dXJl IGlmIHRoZSBvdmVyaGVhZCBiZWNvbWVzIHVuYmVhcmFibGUuIElmIHRoZSBzeW5jIG1lY2hhbmlz bSBnZXRzIGVzdGFibGlzaGVkIGFzCm1hbmRhdG9yeSwgdGhlIHByb2JsZW0gd2lsbCBzb2x2ZSBp dHNlbGYuIEFuZCBhdCBsZWFzdCBub3cgd2UgY292ZXIgdGhlIG1vc3QgY29tbW9uIGNhc2UgYW5k IHdlIGRvbid0IG5lZWQgdG8gYWRkIGEgbmV3IG11bHRpcGxleGluZwptZWNoYW5pc20gaW4gdGhl IHN5bmMgSU9DVEwgc2luY2Ugd2UgYWxyZWFkeSBoYXZlIG9uZSBpbiB0aGUgSU9DVEwgbWVjaGFu aXNtLiBXZSBjYW4gc2ltcGx5IGFkZCBhIG5ldyBzeW5jIElPQ1RMIGZvciBuZXcgb2JzY3VyZSBz eW5jIGNhc2VzIGlmIGRlc2lyZWQuCgpBbHNvLCBpbiBmYWN0IEkgYmVsaWV2ZSB0aGlzIGFsc28g Z2l2ZXMgdXMgYSBoaW50IHdoZXRoZXIgdG8gdXNlIHN5Y2FsbHMgb3IgSU9DVExzOiBJZiB3ZSB3 YW50IHRvIG1haW50YWluIHRoZSBwb3NzaWJpbGl0eSB0byBleHRlbmQgdGhlIHN5bmNocm9uaXph dGlvbiBtZWNoYW5pc20sIEkgc3Ryb25nbHkgYmVsaWV2ZSB3ZSBuZWVkIHRvIHVzZSBhbiBJT0NU TC4KCi9UaG9tYXMKCgo+Cj4gQmVzdCBSZWdhcmRzLAo+Cj4gVGlhZ28KPiBfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwo+IGRyaS1kZXZlbCBtYWlsaW5nIGxp c3QKPiBkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCj4gaHR0cDovL2xpc3RzLmZyZWVk ZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJp LWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3Jn L21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==