From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhang, Jerry (Junwei)" Subject: Re: [PATCH 2/4] dma-buf: lock the reservation object during (un)map_dma_buf v2 Date: Thu, 28 Jun 2018 17:53:59 +0800 Message-ID: <5B34B037.50105@amd.com> References: <20180622141103.1787-1-christian.koenig@amd.com> <20180622141103.1787-3-christian.koenig@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180622141103.1787-3-christian.koenig@amd.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: =?UTF-8?B?Q2hyaXN0aWFuIEvDtm5pZw==?= , daniel@ffwll.ch, sumit.semwal@linaro.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gMDYvMjIvMjAxOCAxMDoxMSBQTSwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKPiBGaXJzdCBz dGVwIHRvd2FyZHMgdW5waW5uZWQgRE1BIGJ1ZiBvcGVyYXRpb24uCj4KPiBJJ3ZlIGNoZWNrZWQg dGhlIERSTSBkcml2ZXJzIHRvIHBvdGVudGlhbCBsb2NraW5nIG9mIHRoZSByZXNlcnZhdGlvbgo+ IG9iamVjdCwgYnV0IGVzc2VudGlhbGx5IHdlIG5lZWQgdG8gYXVkaXQgYWxsIGltcGxlbWVudGF0 aW9ucyBvZiB0aGUKPiBkbWFfYnVmIF9vcHMgZm9yIHRoaXMgdG8gd29yay4KPgo+IHYyOiByZW9y ZGVyZWQKPgo+IFNpZ25lZC1vZmYtYnk6IENocmlzdGlhbiBLw7ZuaWcgPGNocmlzdGlhbi5rb2Vu aWdAYW1kLmNvbT4KCmxvb2tzIGdvb2QgZm9yIG1lLgoKUmV2aWV3ZWQtYnk6IEp1bndlaSBaaGFu ZyA8SmVycnkuWmhhbmdAYW1kLmNvbT4KCkplcnJ5Cj4gLS0tCj4gICBkcml2ZXJzL2RtYS1idWYv ZG1hLWJ1Zi5jIHwgOSArKysrKystLS0KPiAgIGluY2x1ZGUvbGludXgvZG1hLWJ1Zi5oICAgfCA0 ICsrKysKPiAgIDIgZmlsZXMgY2hhbmdlZCwgMTAgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMo LSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS1idWYvZG1hLWJ1Zi5jIGIvZHJpdmVycy9k bWEtYnVmL2RtYS1idWYuYwo+IGluZGV4IGRjOTRlNzZlMmUyYS4uNDlmMjNiNzkxZWI4IDEwMDY0 NAo+IC0tLSBhL2RyaXZlcnMvZG1hLWJ1Zi9kbWEtYnVmLmMKPiArKysgYi9kcml2ZXJzL2RtYS1i dWYvZG1hLWJ1Zi5jCj4gQEAgLTY2NSw3ICs2NjUsOSBAQCBzdHJ1Y3Qgc2dfdGFibGUgKmRtYV9i dWZfbWFwX2F0dGFjaG1lbnQoc3RydWN0IGRtYV9idWZfYXR0YWNobWVudCAqYXR0YWNoLAo+ICAg CWlmIChXQVJOX09OKCFhdHRhY2ggfHwgIWF0dGFjaC0+ZG1hYnVmKSkKPiAgIAkJcmV0dXJuIEVS Ul9QVFIoLUVJTlZBTCk7Cj4KPiAtCXNnX3RhYmxlID0gYXR0YWNoLT5kbWFidWYtPm9wcy0+bWFw X2RtYV9idWYoYXR0YWNoLCBkaXJlY3Rpb24pOwo+ICsJcmVzZXJ2YXRpb25fb2JqZWN0X2xvY2so YXR0YWNoLT5kbWFidWYtPnJlc3YsIE5VTEwpOwo+ICsJc2dfdGFibGUgPSBkbWFfYnVmX21hcF9h dHRhY2htZW50X2xvY2tlZChhdHRhY2gsIGRpcmVjdGlvbik7Cj4gKwlyZXNlcnZhdGlvbl9vYmpl Y3RfdW5sb2NrKGF0dGFjaC0+ZG1hYnVmLT5yZXN2KTsKPiAgIAlpZiAoIXNnX3RhYmxlKQo+ICAg CQlzZ190YWJsZSA9IEVSUl9QVFIoLUVOT01FTSk7Cj4KPiBAQCAtNzE1LDggKzcxNyw5IEBAIHZv aWQgZG1hX2J1Zl91bm1hcF9hdHRhY2htZW50KHN0cnVjdCBkbWFfYnVmX2F0dGFjaG1lbnQgKmF0 dGFjaCwKPiAgIAlpZiAoV0FSTl9PTighYXR0YWNoIHx8ICFhdHRhY2gtPmRtYWJ1ZiB8fCAhc2df dGFibGUpKQo+ICAgCQlyZXR1cm47Cj4KPiAtCWF0dGFjaC0+ZG1hYnVmLT5vcHMtPnVubWFwX2Rt YV9idWYoYXR0YWNoLCBzZ190YWJsZSwKPiAtCQkJCQkJZGlyZWN0aW9uKTsKPiArCXJlc2VydmF0 aW9uX29iamVjdF9sb2NrKGF0dGFjaC0+ZG1hYnVmLT5yZXN2LCBOVUxMKTsKPiArCWRtYV9idWZf dW5tYXBfYXR0YWNobWVudF9sb2NrZWQoYXR0YWNoLCBzZ190YWJsZSwgZGlyZWN0aW9uKTsKPiAr CXJlc2VydmF0aW9uX29iamVjdF91bmxvY2soYXR0YWNoLT5kbWFidWYtPnJlc3YpOwo+ICAgfQo+ ICAgRVhQT1JUX1NZTUJPTF9HUEwoZG1hX2J1Zl91bm1hcF9hdHRhY2htZW50KTsKPgo+IGRpZmYg LS1naXQgYS9pbmNsdWRlL2xpbnV4L2RtYS1idWYuaCBiL2luY2x1ZGUvbGludXgvZG1hLWJ1Zi5o Cj4gaW5kZXggYTI1ZTc1NGFlMmY3Li4wMjQ2NThkMWYyMmUgMTAwNjQ0Cj4gLS0tIGEvaW5jbHVk ZS9saW51eC9kbWEtYnVmLmgKPiArKysgYi9pbmNsdWRlL2xpbnV4L2RtYS1idWYuaAo+IEBAIC0x MTgsNiArMTE4LDggQEAgc3RydWN0IGRtYV9idWZfb3BzIHsKPiAgIAkgKiBhbnkgb3RoZXIga2lu ZCBvZiBzaGFyaW5nIHRoYXQgdGhlIGV4cG9ydGVyIG1pZ2h0IHdpc2ggdG8gbWFrZQo+ICAgCSAq IGF2YWlsYWJsZSB0byBidWZmZXItdXNlcnMuCj4gICAJICoKPiArCSAqIFRoaXMgaXMgY2FsbGVk IHdpdGggdGhlIGRtYWJ1Zi0+cmVzdiBvYmplY3QgbG9ja2VkLgo+ICsJICoKPiAgIAkgKiBSZXR1 cm5zOgo+ICAgCSAqCj4gICAJICogQSAmc2dfdGFibGUgc2NhdHRlciBsaXN0IG9mIG9yIHRoZSBi YWNraW5nIHN0b3JhZ2Ugb2YgdGhlIERNQSBidWZmZXIsCj4gQEAgLTEzOCw2ICsxNDAsOCBAQCBz dHJ1Y3QgZG1hX2J1Zl9vcHMgewo+ICAgCSAqIEl0IHNob3VsZCBhbHNvIHVucGluIHRoZSBiYWNr aW5nIHN0b3JhZ2UgaWYgdGhpcyBpcyB0aGUgbGFzdCBtYXBwaW5nCj4gICAJICogb2YgdGhlIERN QSBidWZmZXIsIGl0IHRoZSBleHBvcnRlciBzdXBwb3J0cyBiYWNraW5nIHN0b3JhZ2UKPiAgIAkg KiBtaWdyYXRpb24uCj4gKwkgKgo+ICsJICogVGhpcyBpcyBjYWxsZWQgd2l0aCB0aGUgZG1hYnVm LT5yZXN2IG9iamVjdCBsb2NrZWQuCj4gICAJICovCj4gICAJdm9pZCAoKnVubWFwX2RtYV9idWYp KHN0cnVjdCBkbWFfYnVmX2F0dGFjaG1lbnQgKiwKPiAgIAkJCSAgICAgIHN0cnVjdCBzZ190YWJs ZSAqLAo+Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRy aS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRw czovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=