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Mon, 16 Aug 2021 14:38:00 +0800 Message-ID: <76560e846d084f89e37cc8ccd7ca714e539c2803.camel@mediatek.com> Subject: Re: [PATCH v2] media: mtk-vpu: Ensure alignment of 8 for DTCM buffer From: houlong wei To: Dafna Hirschfeld , "linux-media@vger.kernel.org" , "linux-mediatek@lists.infradead.org" , "linux-kernel@vger.kernel.org" CC: Alexandre Courbot , Enric Balletbo i Serra , "hverkuil@xs4all.nl" , "kernel@collabora.com" , "dafna3@gmail.com" , "mchehab@kernel.org" , "tfiga@chromium.org" , Minghsiu Tsai =?UTF-8?Q?=28=E8=94=A1=E6=98=8E=E4=BF=AE=29?= , Andrew-CT Chen =?UTF-8?Q?=28=E9=99=B3=E6=99=BA=E8=BF=AA=29?= , Tiffany Lin =?UTF-8?Q?=28=E6=9E=97=E6=85=A7=E7=8F=8A=29?= , "matthias.bgg@gmail.com" , "courbot@chromium.org" , "hsinyi@chromium.org" , "eizan@chromium.org" , Date: Mon, 16 Aug 2021 14:38:01 +0800 In-Reply-To: <20210806082810.9378-1-dafna.hirschfeld@collabora.com> References: <20210806082810.9378-1-dafna.hirschfeld@collabora.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-TM-SNTS-SMTP: 771D58D45B93244CED2E1141867E5E3129C614AEA2FA04CE8851AE9F5553180F2000:8 X-MTK: N Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gRnJpLCAyMDIxLTA4LTA2IGF0IDE2OjI4ICswODAwLCBEYWZuYSBIaXJzY2hmZWxkIHdyb3Rl Og0KPiBGcm9tOiBBbGV4YW5kcmUgQ291cmJvdCA8YWNvdXJib3RAY2hyb21pdW0ub3JnPg0KPiAN Cj4gV2hlbiBydW5uaW5nIG1lbWNweV90b2lvOg0KPiBtZW1jcHlfdG9pbyhzZW5kX29iai0+c2hh cmVfYnVmLCBidWYsIGxlbik7DQo+IGl0IHdhcyBmb3VuZCB0aGF0IGVycm9ycyBhcHBlYXIgaWYg bGVuIGlzIG5vdCBhIG11bHRpcGxlIG9mIDg6DQo+IA0KPiBbNTguMzUwODQxXSBtdGstbWRwIDE0 MDAxMDAwLnJkbWE6IHByb2Nlc3NpbmcgZmFpbGVkOiAtMjINCj4gDQo+IFRoaXMgcGF0Y2ggZW5z dXJlIGNvcHkgb2YgYSBtdWx0aWxlIG9mIDggc2l6ZSBieSBjYWxsaW5nDQo+IHJvdW5kX3VwKGxl biwgOCkgd2hlbiBjb3B5aW5nDQo+IA0KPiBGaXhlczogZTY1OTlhZGZhZDMwICgibWVkaWE6IG10 ay12cHU6IGF2b2lkIHVuYWxpZ25lZCBhY2Nlc3MgdG8gRFRDTQ0KPiBidWZmZXIuIikNCj4gU2ln bmVkLW9mZi1ieTogQWxleGFuZHJlIENvdXJib3QgPGFjb3VyYm90QGNocm9taXVtLm9yZz4NCj4g U2lnbmVkLW9mZi1ieTogRW5yaWMgQmFsbGV0Ym8gaSBTZXJyYSA8ZW5yaWMuYmFsbGV0Ym9AY29s bGFib3JhLmNvbT4NCj4gU2lnbmVkLW9mZi1ieTogRGFmbmEgSGlyc2NoZmVsZCA8ZGFmbmEuaGly c2NoZmVsZEBjb2xsYWJvcmEuY29tPg0KPiAtLS0NCj4gY2hhbmdlcyBzaW5jZSB2MToNCj4gMS4g Y2hhbmdlIHNpZ24tb2ZmLWJ5IHRhZ3MNCj4gMi4gY2hhbmdlIHZhbHVlcyB0byBtZW1zZXQNCj4g DQo+ICBkcml2ZXJzL21lZGlhL3BsYXRmb3JtL210ay12cHUvbXRrX3ZwdS5jIHwgNSArKysrLQ0K PiAgMSBmaWxlIGNoYW5nZWQsIDQgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQ0KPiANCj4g ZGlmZiAtLWdpdCBhL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vbXRrLXZwdS9tdGtfdnB1LmMNCj4g Yi9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL210ay12cHUvbXRrX3ZwdS5jDQo+IGluZGV4IGVjMjkw ZGRlNTljZi4uNjYyNzZjNWExYmMzIDEwMDY0NA0KPiAtLS0gYS9kcml2ZXJzL21lZGlhL3BsYXRm b3JtL210ay12cHUvbXRrX3ZwdS5jDQo+ICsrKyBiL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vbXRr LXZwdS9tdGtfdnB1LmMNCj4gQEAgLTMxNiw2ICszMTYsNyBAQCBpbnQgdnB1X2lwaV9zZW5kKHN0 cnVjdCBwbGF0Zm9ybV9kZXZpY2UgKnBkZXYsDQo+ICB7DQo+ICAJc3RydWN0IG10a192cHUgKnZw dSA9IHBsYXRmb3JtX2dldF9kcnZkYXRhKHBkZXYpOw0KPiAgCXN0cnVjdCBzaGFyZV9vYmogX19p b21lbSAqc2VuZF9vYmogPSB2cHUtPnNlbmRfYnVmOw0KPiArCXVuc2lnbmVkIGNoYXIgZGF0YVtT SEFSRV9CVUZfU0laRV07DQo+ICAJdW5zaWduZWQgbG9uZyB0aW1lb3V0Ow0KPiAgCWludCByZXQg PSAwOw0KPiAgDQo+IEBAIC0zNDksNyArMzUwLDkgQEAgaW50IHZwdV9pcGlfc2VuZChzdHJ1Y3Qg cGxhdGZvcm1fZGV2aWNlICpwZGV2LA0KPiAgCQl9DQo+ICAJfSB3aGlsZSAodnB1X2NmZ19yZWFk bCh2cHUsIEhPU1RfVE9fVlBVKSk7DQo+ICANCj4gLQltZW1jcHlfdG9pbyhzZW5kX29iai0+c2hh cmVfYnVmLCBidWYsIGxlbik7DQo+ICsJbWVtc2V0KGRhdGEgKyBsZW4sIDAsIHNpemVvZihkYXRh KSAtIGxlbik7DQo+ICsJbWVtY3B5KGRhdGEsIGJ1ZiwgbGVuKTsNCj4gKwltZW1jcHlfdG9pbyhz ZW5kX29iai0+c2hhcmVfYnVmLCBkYXRhLCByb3VuZF91cChsZW4sIDgpKTsNCg0KSGkgRGFmbmEs DQoNClRoYW5rcyBmb3IgeW91ciBwYXRjaC4NCkluIHRoaXMgcGF0Y2gsIHRoZSBkYXRhIGlzIGNv cGllZCB0d2ljZSBldmVuIGlmIHRoZSAnbGVuJyBpcyBtdWxpdHBsZQ0Kb2YgOC4gQ2FuIHdlIGp1 ZGdlIHRoZSBhbGlnbm1lbnQgYW5kIGRlY2lkZSB0byBjb3B5IG9uY2Ugb3IgdHdpY2UgPyANCkxp a2UgYmVsb3csIHdoaWNoIG1heSByZWR1Y2UgdGhlIGxhdGVuY3kgb2YgdGhpcyBmdW5jdGlvbiBh IGJpdCB3aGVuDQonbGVuJyBpcyBtdWx0aXBsZSBvZiA4Lg0KaWYgKHVubGlrZWx5KChsZW4gJSA4 KSAhPSAwKSkgew0KCXVuc2lnbmVkIGNoYXIgZGF0YVtTSEFSRV9CVUZfU0laRV07DQoJDQoJbWVt c2V0KGRhdGEgKyBsZW4sIDAsIHNpemVvZihkYXRhKSAtIGxlbik7DQoJbWVtY3B5KGRhdGEsIGJ1 ZiwgbGVuKTsNCgltZW1jcHlfdG9pbyhzZW5kX29iai0+c2hhcmVfYnVmLCBkYXRhLCByb3VuZF91 cChsZW4sIDgpKTsNCn0gZWxzZSB7DQoJbWVtY3B5X3RvaW8oc2VuZF9vYmotPnNoYXJlX2J1Ziwg YnVmLCBsZW4pOw0KfQ0KDQoNClJlZ2FyZHMsDQpIb3Vsb25nDQoNCj4gIAl3cml0ZWwobGVuLCAm c2VuZF9vYmotPmxlbik7DQo+ICAJd3JpdGVsKGlkLCAmc2VuZF9vYmotPmlkKTsNCj4gIA0KPiAt LSANCj4gMi4xNy4xDQoNCg==