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 18:56:12 +0200 Message-ID: <55DB4CAC.6070404@vmware.com> References: <55D50442.5080102@intel.com> <55D57837.4080301@vmware.com> <55D7AF11.9090809@intel.com> <55DAE8F5.6010302@shipmail.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com [208.91.2.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 46B346E31A for ; Mon, 24 Aug 2015 09:56:18 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Daniel Stone Cc: "dri-devel@lists.freedesktop.org" , Daniel Vetter List-Id: dri-devel@lists.freedesktop.org SGksIERhbmllbCwKCk9uIDA4LzI0LzIwMTUgMDU6NTIgUE0sIERhbmllbCBTdG9uZSB3cm90ZToK PiBIaSBUaG9tYXMsCj4KPiBPbiAyNCBBdWd1c3QgMjAxNSBhdCAxMDo1MCwgVGhvbWFzIEhlbGxz dHJvbSA8dGhvbWFzQHNoaXBtYWlsLm9yZz4gd3JvdGU6Cj4+IEluIGFueSBjYXNlLCBJZGVhbGx5 IEknZCB3YW50IHRoZSBzdHJ1Y3QgZG1hX2J1Zl9zeW5jIGxvb2sgc29tZXRoaW5nIGxpa2UKPj4K Pj4gZW51bSBkbWFfYnVmX3N5bmNfZmxhZ3Mgewo+PiAgICAgICAgIERNQV9CVUZfU1lOQ19SRUFE ID0gKDEgPDwgMCksCj4+ICAgICAgICAgRE1BX0JVRl9TWU5DX1dSSVRFID0gKDIgPDwgMCksCj4+ ICAgICAgICAgRE1BX0JVRl9TWU5DX1JXID0gKDMgPDwgMCksCj4+ICAgICAgICAgRE1BX0JVRl9T WU5DX1NUQVJUID0gKDAgPDwgMiksCj4+ICAgICAgICAgRE1BX0JVRl9TWU5DX0VORCA9ICgxIDw8 IDIpLAo+Pgo+PiAgICAgICAgIERNQV9CVUZfU1lOQ19WQUxJRF9GTEFHU19NQVNLID0gRE1BX0JV Rl9TWU5DX1JXIHwKPj4gICAgICAgICAgICAgICAgIERNQV9CVUZfU1lOQ19FTkQKPj4gfTsKPj4K Pj4KPj4gLyogYmVnaW4vZW5kIGRtYS1idWYgZnVuY3Rpb25zIHVzZWQgZm9yIHVzZXJzcGFjZSBt bWFwLiAqLwo+PiBzdHJ1Y3QgZG1hX2J1Zl9zeW5jIHsKPj4gICAgICAgICBlbnVtIGRtYV9idWZf c3luY19mbGFncyBmbGFnczsKPj4gICAgICAgICBfX3U2NCB4Owo+PiAgICAgICAgIF9fdTY0IHdp ZHRoOwo+Pgo+PiAgICAgICAgIC8qIDJEIFN5bmMgcGFyYW1ldGVycyAqLwo+PiAgICAgICAgIF9f dTY0IHN0cmlkZTsKPj4gICAgICAgICBfX3U2NCB5Owo+PiAgICAgICAgIF9fdTY0IGhlaWdodDsK Pj4KPj4gfQo+Pgo+Pgo+PiBTbyBhZ2Fpbiwgd2h5IHVzZSBhIDJEIHN5bmMgaW4gdGhlIGZpcnN0 IHBsYWNlIHdoZW4gaXQncyBwcm9iYWJseSBwb3NzaWJsZSB0byBiYXRjaCAxRCBzeW5jcyBpbiB0 aGUgZHJpdmVyPwo+PiBJdCBhbGwgYm9pbHMgZG93biB0byB0aGUgbnVtYmVyIG9mIHN5c2NhbGxz IHJlcXVpcmVkLCBhbmQgYWxzbyB0aGUgZmFjdCB0aGF0IGl0J3MgcHJvYmFibHkgbm90IHRyaXZp YWwgdG8gYmF0Y2ggc3luYyBjYWxscyBpbiB0aGUgcmVhZC13cml0ZSBjYXNlLiBPbmUgY2FuLCBh Z2FpbiwgYXJndWUgdGhhdCB0aGVyZSBtaWdodCBiZSAzRCBjYXNlcyBvciBvdGhlciBvYnNjdXJl IHN5bmMgY2FzZXMsCj4+IGJ1dCBpbiB0aGF0IGNhc2UsIGxldCdzIGltcGxlbWVudCB0aGVtIGlu IHRoZSBmdXR1cmUgaWYgdGhlIG92ZXJoZWFkIGJlY29tZXMgdW5iZWFyYWJsZS4gSWYgdGhlIHN5 bmMgbWVjaGFuaXNtIGdldHMgZXN0YWJsaXNoZWQgYXMKPj4gbWFuZGF0b3J5LCB0aGUgcHJvYmxl bSB3aWxsIHNvbHZlIGl0c2VsZi4gQW5kIGF0IGxlYXN0IG5vdyB3ZSBjb3ZlciB0aGUgbW9zdCBj b21tb24gY2FzZSBhbmQgd2UgZG9uJ3QgbmVlZCB0byBhZGQgYSBuZXcgbXVsdGlwbGV4aW5nCj4+ IG1lY2hhbmlzbSBpbiB0aGUgc3luYyBJT0NUTCBzaW5jZSB3ZSBhbHJlYWR5IGhhdmUgb25lIGlu IHRoZSBJT0NUTCBtZWNoYW5pc20uIFdlIGNhbiBzaW1wbHkgYWRkIGEgbmV3IHN5bmMgSU9DVEwg Zm9yIG5ldyBvYnNjdXJlIHN5bmMgY2FzZXMgaWYgZGVzaXJlZC4KPiBJIHN0aWxsIGRvbid0IHRo aW5rIHRoaXMgYW1lbGlvcmF0ZXMgdGhlIG5lZWQgZm9yIGJhdGNoaW5nOiBjb25zaWRlcgo+IHRo ZSBjYXNlIHdoZXJlIHlvdSB1cGRhdGUgdHdvIGRpc2pvaW50IHNjcmVlbiByZWdpb25zIGFuZCB3 YW50IHRoZW0KPiBib3RoIGZsdXNoZWQuIEVpdGhlciB5b3UgaXNzdWUgdHdvIHNlcGFyYXRlIHN5 bmMgY2FsbHMgKHdoaWNoIGNhbiBiZQo+IGRpc2FkdmFudGFnZW91cyBwZXJmb3JtYW5jZS13aXNl IG9uIHNvbWUgaGFyZHdhcmUgLyBzZXR1cHMpLCBvciB5b3UKPiBhY2N1bXVsYXRlIHRoZSByZWdp b25zIGFuZCBvbmx5IGZsdXNoIGxhdGVyLiBTbyBlaXRoZXIgdHdvIGlvY3RscyAob25lCj4gaW4g dGhlIHN0eWxlIG9mIGRpcnR5ZmIgYW5kIG9uZSB0byBwZXJmb3JtIHRoZSBzeW5jL2ZsdXNoOyB5 b3UgY2FuCj4gc2hvcnRjdXQgdG8gYXNzdW1lIHRoZSBmdWxsIGJ1ZmZlciB3YXMgZGFtYWdlZCBp ZiB0aGUgZm9ybWVyIGlzCj4gbWlzc2luZyksIG9yIG9uZSBsaWtlIHRoaXM6Cj4KPiBzdHJ1Y3Qg ZG1hX2J1Zl9zeW5jXzJkIHsKPiAgICAgICAgIGVudW0gZG1hX2J1Zl9zeW5jX2ZsYWdzIGZsYWdz Owo+Cj4gICAgICAgICBfX3U2NCBzdHJpZGVfYnl0ZXM7Cj4gICAgICAgICBfX3UzMiBieXRlc19w ZXJfcGl4ZWw7Cj4gICAgICAgICBfX3UzMiBudW1fcmVnaW9uczsKPgo+ICAgICAgICAgc3RydWN0 IHsKPiAgICAgICAgICAgICAgICAgX191NjQgeDsKPiAgICAgICAgICAgICAgICAgX191NjQgeTsK PiAgICAgICAgICAgICAgICAgX191NjQgd2lkdGg7Cj4gICAgICAgICAgICAgICAgIF9fdTY0IGhl aWdodDsKPiAgICAgICAgIH0gcmVnaW9uc1tdOwo+IH07Cj4KPiBDaGVlcnMsCj4gRGFuaWVsCgpG aW5lIHdpdGggbWUsIGFsdGhvdWdoIHBlcmhhcHMgYnl0ZXNfcGVyX3BpeGVsIGlzIGEgYml0IHJl ZHVuZGFudD8KCi9UaG9tYXMKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJp LWRldmVsCg==