From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 05/12] dma-buf: add explicit buffer pinning Date: Wed, 17 Apr 2019 16:20:02 +0200 Message-ID: <20190417142002.GE13337@phenom.ffwll.local> References: <20190416183841.1577-1-christian.koenig@amd.com> <20190416183841.1577-6-christian.koenig@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20190416183841.1577-6-christian.koenig-5C7GfCeVMHo@public.gmane.org> List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: Christian =?iso-8859-1?Q?K=F6nig?= Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, sumit.semwal-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org T24gVHVlLCBBcHIgMTYsIDIwMTkgYXQgMDg6Mzg6MzRQTSArMDIwMCwgQ2hyaXN0aWFuIEvDtm5p ZyB3cm90ZToKPiBBZGQgb3B0aW9uYWwgZXhwbGljaXQgcGlubmluZyBjYWxsYmFja3MgaW5zdGVh ZCBvZiBpbXBsaWNpdGx5IGFzc3VtZSB0aGUKPiBleHBvcnRlciBwaW5zIHRoZSBidWZmZXIgd2hl biBhIG1hcHBpbmcgaXMgY3JlYXRlZC4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDaHJpc3RpYW4gS8O2 bmlnIDxjaHJpc3RpYW4ua29lbmlnQGFtZC5jb20+CgpEb24ndCB3ZSBuZWVkIHRoaXMgdG9nZXRo ZXIgd2l0aCB0aGUgaW52YWxpZGF0ZSBjYWxsYmFjayBhbmQgdGhlIGR5bmFtaWMKc3R1ZmY/IEFs c28gSSdtIGFzc3VtaW5nIHRoYXQgcGluL3VucGluIGlzIHByZXR0eSBtdWNoIHJlcXVpcmVkIGZv cgpkeW5hbWljIGJvLCBzbyBjb3VsZCB3ZSBsb29rIGF0IHRoZXNlIGNhbGxiYWNrcyBpbnN0ZWFk IG9mIHRoZSBkeW5hbWljCmZsYWcgeW91IGFkZCBpbiBwYXRjaCAxLgoKSSdtIGFzc3VtaW5nIGZv bGxvd2luZyBydWxlcyBob2xkOgpubyBwaW4vdXBpbiBmcm9tIGV4cG9ydGVyOgoKZG1hLWJ1ZiBp cyBub3QgZHluYW1pYywgYW5kIHBpbm5lZCBmb3IgdGhlIGR1cmF0aW9uIG9mIG1hcC91bm1hcC4g SSdtCm5vdCAxMDAlIHN1cmUgd2hldGhlciByZWFsbHkgZXZlcnlvbmUgd2FudHMgdGhlIG1hcHBp bmcgdG8gYmUgY2FjaGVkIGZvcgp0aGUgZW50aXJlIGF0dGFjaG1lbnQsIG9ubHkgZHJtX3ByaW1l IGRvZXMgdGhhdC4gQW5kIHRoYXQncyBub3QgdGhlIG9ubHkKZG1hLWJ1ZiBpbXBvcnRlci4KCnBp bi91bnBpbiBjYWxscyBhcmUgbm9vcHMuCgpwaW4vdW5waW4gZXhpc3QgaW4gdGhlIGV4cG9ydGVy LCBidXQgaW1wb3J0ZXIgaGFzIG5vdCBwcm92aWRlZCBhbgppbnZhbGlkYXRlIGNhbGxiYWNrOgoK V2UgbWFwIGF0IGF0dGFjaCB0aW1lLCBhbmQgd2UgYWxzbyBoYXZlIHRvIHBpbiwgc2luY2UgdGhl IGltcG9ydGVyIGNhbid0CmhhbmRsZSB0aGUgYnVmZmVyIGRpc2FwcGVhcmluZywgYXQgYXR0YWNo IHRpbWUuIFdlIHVubWFwL3VucGluIGF0IGRldGFjaC4KCnBpbi91bnBpbiBmcm9tIGV4cG9ydGVy LCBpbnZhbGlkYXRlIGZyb20gaW1wb3J0ZXI6CgpGdWxsIGR5bmFtaWMgbWFwcGluZy4gV2UgYXNz dW1lIHRoZSBpbXBvcnRlciB3aWxsIGRvIGNhY2hpbmcsIGF0dGFjaApmZW5jZXMgYXMgbmVlZGVk LCBhbmQgcGluIHRoZSB1bmRlcmx5aW5nIGJvIHdoZW4gaXQgbmVlZHMgaXQgaXQKcGVybWFuZW50 bHksIHdpdGhvdXQgYXR0YWNoaW5nIGZlbmNlcyAoaS5lLiB0aGUgc2Nhbm91dCBjYXNlKS4KCkFz c3VtaW5nIEknbSBub3QgdGVycmlibHkgb2ZmIHdpdGggbXkgdW5kZXJzdGFuZGluZywgdGhlbiBJ IHRoaW5rIGl0J2QgYmUKYmVzdCB0byBpbnRyb2R1Y2UgdGhlIGVudGlyZSBuZXcgZG1hLWJ1ZiBh cGkgaW4gdGhlIGZpcnN0IHBhdGNoLCBhbmQgZmxlc2gKaXQgb3V0IGxhdGVyLiBJbnN0ZWFkIG9m IHNwcmVhZCBvdmVyIGEgZmV3IHBhdGNoZXMuIFBsdXMgdGhlIGFib3ZlIChtYXliZQpwcmV0dGll cikgYXMgYSBuaWNlIGtlcm5lbGRvYyBvdmVydmlldyBjb21tZW50IGZvciBob3cgZHluYW1pYyBk bWEtYnVmIGlzCnN1cHBvc2VkIHRvIHdvcmsgcmVhbGx5LgotRGFuaWVsCgo+IC0tLQo+ICBkcml2 ZXJzL2RtYS1idWYvZG1hLWJ1Zi5jIHwgMzkgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrCj4gIGluY2x1ZGUvbGludXgvZG1hLWJ1Zi5oICAgfCAzNyArKysrKysrKysrKysr KysrKysrKysrKysrKysrKysrLS0tLS0tCj4gIDIgZmlsZXMgY2hhbmdlZCwgNzAgaW5zZXJ0aW9u cygrKSwgNiBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEtYnVmL2Rt YS1idWYuYyBiL2RyaXZlcnMvZG1hLWJ1Zi9kbWEtYnVmLmMKPiBpbmRleCBhMzczOGZhYjM5Mjcu LmYyM2ZmODM1NTUwNSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2RtYS1idWYvZG1hLWJ1Zi5jCj4g KysrIGIvZHJpdmVycy9kbWEtYnVmL2RtYS1idWYuYwo+IEBAIC02MzAsNiArNjMwLDQxIEBAIHZv aWQgZG1hX2J1Zl9kZXRhY2goc3RydWN0IGRtYV9idWYgKmRtYWJ1Ziwgc3RydWN0IGRtYV9idWZf YXR0YWNobWVudCAqYXR0YWNoKQo+ICB9Cj4gIEVYUE9SVF9TWU1CT0xfR1BMKGRtYV9idWZfZGV0 YWNoKTsKPiAgCj4gKy8qKgo+ICsgKiBkbWFfYnVmX3BpbiAtIExvY2sgZG93biB0aGUgRE1BLWJ1 Zgo+ICsgKgo+ICsgKiBAZG1hYnVmOglbaW5dCURNQS1idWYgdG8gbG9jayBkb3duLgo+ICsgKgo+ ICsgKiBSZXR1cm5zOgo+ICsgKiAwIG9uIHN1Y2Nlc3MsIG5lZ2F0aXZlIGVycm9yIGNvZGUgb24g ZmFpbHVyZS4KPiArICovCj4gK2ludCBkbWFfYnVmX3BpbihzdHJ1Y3QgZG1hX2J1ZiAqZG1hYnVm KQo+ICt7Cj4gKwlpbnQgcmV0ID0gMDsKPiArCj4gKwlyZXNlcnZhdGlvbl9vYmplY3RfYXNzZXJ0 X2hlbGQoZG1hYnVmLT5yZXN2KTsKPiArCj4gKwlpZiAoZG1hYnVmLT5vcHMtPnBpbikKPiArCQly ZXQgPSBkbWFidWYtPm9wcy0+cGluKGRtYWJ1Zik7Cj4gKwo+ICsJcmV0dXJuIHJldDsKPiArfQo+ ICtFWFBPUlRfU1lNQk9MX0dQTChkbWFfYnVmX3Bpbik7Cj4gKwo+ICsvKioKPiArICogZG1hX2J1 Zl91bnBpbiAtIFJlbW92ZSBsb2NrIGZyb20gRE1BLWJ1Zgo+ICsgKgo+ICsgKiBAZG1hYnVmOglb aW5dCURNQS1idWYgdG8gdW5sb2NrLgo+ICsgKi8KPiArdm9pZCBkbWFfYnVmX3VucGluKHN0cnVj dCBkbWFfYnVmICpkbWFidWYpCj4gK3sKPiArCXJlc2VydmF0aW9uX29iamVjdF9hc3NlcnRfaGVs ZChkbWFidWYtPnJlc3YpOwo+ICsKPiArCWlmIChkbWFidWYtPm9wcy0+dW5waW4pCj4gKwkJZG1h YnVmLT5vcHMtPnVucGluKGRtYWJ1Zik7Cj4gK30KPiArRVhQT1JUX1NZTUJPTF9HUEwoZG1hX2J1 Zl91bnBpbik7Cj4gKwo+ICAvKioKPiAgICogZG1hX2J1Zl9tYXBfYXR0YWNobWVudF9sb2NrZWQg LSBNYXBzIHRoZSBidWZmZXIgaW50byBfZGV2aWNlXyBhZGRyZXNzIHNwYWNlCj4gICAqIHdpdGgg dGhlIHJlc2VydmF0aW9uIGxvY2sgaGVsZC4gSXMgYSB3cmFwcGVyIGZvciBtYXBfZG1hX2J1Zigp IG9mIHRoZQo+IEBAIC02NjYsNiArNzAxLDggQEAgZG1hX2J1Zl9tYXBfYXR0YWNobWVudF9sb2Nr ZWQoc3RydWN0IGRtYV9idWZfYXR0YWNobWVudCAqYXR0YWNoLAo+ICAJICovCj4gIAlpZiAoYXR0 YWNoLT5pbnZhbGlkYXRlKQo+ICAJCWxpc3RfZGVsKCZhdHRhY2gtPm5vZGUpOwo+ICsJZWxzZQo+ ICsJCWRtYV9idWZfcGluKGF0dGFjaC0+ZG1hYnVmKTsKPiAgCXNnX3RhYmxlID0gYXR0YWNoLT5k bWFidWYtPm9wcy0+bWFwX2RtYV9idWYoYXR0YWNoLCBkaXJlY3Rpb24pOwo+ICAJaWYgKGF0dGFj aC0+aW52YWxpZGF0ZSkKPiAgCQlsaXN0X2FkZCgmYXR0YWNoLT5ub2RlLCAmYXR0YWNoLT5kbWFi dWYtPmF0dGFjaG1lbnRzKTsKPiBAQCAtNzM1LDYgKzc3Miw4IEBAIHZvaWQgZG1hX2J1Zl91bm1h cF9hdHRhY2htZW50X2xvY2tlZChzdHJ1Y3QgZG1hX2J1Zl9hdHRhY2htZW50ICphdHRhY2gsCj4g IAo+ICAJYXR0YWNoLT5kbWFidWYtPm9wcy0+dW5tYXBfZG1hX2J1ZihhdHRhY2gsIHNnX3RhYmxl LAo+ICAJCQkJCQlkaXJlY3Rpb24pOwo+ICsJaWYgKCFhdHRhY2gtPmludmFsaWRhdGUpCj4gKwkJ ZG1hX2J1Zl91bnBpbihhdHRhY2gtPmRtYWJ1Zik7Cj4gIH0KPiAgRVhQT1JUX1NZTUJPTF9HUEwo ZG1hX2J1Zl91bm1hcF9hdHRhY2htZW50X2xvY2tlZCk7Cj4gIAo+IGRpZmYgLS1naXQgYS9pbmNs dWRlL2xpbnV4L2RtYS1idWYuaCBiL2luY2x1ZGUvbGludXgvZG1hLWJ1Zi5oCj4gaW5kZXggZWNl NDYzODM1OWE4Li5hNjE1Yjc0ZTU4OTQgMTAwNjQ0Cj4gLS0tIGEvaW5jbHVkZS9saW51eC9kbWEt YnVmLmgKPiArKysgYi9pbmNsdWRlL2xpbnV4L2RtYS1idWYuaAo+IEBAIC0xMDAsMTQgKzEwMCw0 MCBAQCBzdHJ1Y3QgZG1hX2J1Zl9vcHMgewo+ICAJICovCj4gIAl2b2lkICgqZGV0YWNoKShzdHJ1 Y3QgZG1hX2J1ZiAqLCBzdHJ1Y3QgZG1hX2J1Zl9hdHRhY2htZW50ICopOwo+ICAKPiArCS8qKgo+ ICsJICogQHBpbl9kbWFfYnVmOgo+ICsJICoKPiArCSAqIFRoaXMgaXMgY2FsbGVkIGJ5IGRtYV9i dWZfcGluIGFuZCBsZXRzIHRoZSBleHBvcnRlciBrbm93IHRoYXQgYW4KPiArCSAqIGltcG9ydGVy IGFzc3VtZXMgdGhhdCB0aGUgRE1BLWJ1ZiBjYW4ndCBiZSBpbnZhbGlkYXRlZCBhbnkgbW9yZS4K PiArCSAqCj4gKwkgKiBUaGlzIGlzIGNhbGxlZCB3aXRoIHRoZSBkbWFidWYtPnJlc3Ygb2JqZWN0 IGxvY2tlZC4KPiArCSAqCj4gKwkgKiBUaGlzIGNhbGxiYWNrIGlzIG9wdGlvbmFsLgo+ICsJICoK PiArCSAqIFJldHVybnM6Cj4gKwkgKgo+ICsJICogMCBvbiBzdWNjZXNzLCBuZWdhdGl2ZSBlcnJv ciBjb2RlIG9uIGZhaWx1cmUuCj4gKwkgKi8KPiArCWludCAoKnBpbikoc3RydWN0IGRtYV9idWYg Kik7Cj4gKwo+ICsJLyoqCj4gKwkgKiBAdW5waW5fZG1hX2J1ZjoKPiArCSAqCj4gKwkgKiBUaGlz IGlzIGNhbGxlZCBieSBkbWFfYnVmX3VucGluIGFuZCBsZXRzIHRoZSBleHBvcnRlciBrbm93IHRo YXQgYW4KPiArCSAqIGltcG9ydGVyIGRvZXNuJ3QgbmVlZCB0byB0aGUgRE1BLWJ1ZiB0byBzdGF5 IHdlcmUgaXQgaXMgYW55IG1vcmUuCj4gKwkgKgo+ICsJICogVGhpcyBpcyBjYWxsZWQgd2l0aCB0 aGUgZG1hYnVmLT5yZXN2IG9iamVjdCBsb2NrZWQuCj4gKwkgKgo+ICsJICogVGhpcyBjYWxsYmFj ayBpcyBvcHRpb25hbC4KPiArCSAqLwo+ICsJdm9pZCAoKnVucGluKShzdHJ1Y3QgZG1hX2J1ZiAq KTsKPiArCj4gIAkvKioKPiAgCSAqIEBtYXBfZG1hX2J1ZjoKPiAgCSAqCj4gIAkgKiBUaGlzIGlz IGNhbGxlZCBieSBkbWFfYnVmX21hcF9hdHRhY2htZW50KCkgYW5kIGlzIHVzZWQgdG8gbWFwIGEK PiAgCSAqIHNoYXJlZCAmZG1hX2J1ZiBpbnRvIGRldmljZSBhZGRyZXNzIHNwYWNlLCBhbmQgaXQg aXMgbWFuZGF0b3J5LiBJdAo+IC0JICogY2FuIG9ubHkgYmUgY2FsbGVkIGlmIEBhdHRhY2ggaGFz IGJlZW4gY2FsbGVkIHN1Y2Nlc3NmdWxseS4gVGhpcwo+IC0JICogZXNzZW50aWFsbHkgcGlucyB0 aGUgRE1BIGJ1ZmZlciBpbnRvIHBsYWNlLCBhbmQgaXQgY2Fubm90IGJlIG1vdmVkCj4gLQkgKiBh bnkgbW9yZQo+ICsJICogY2FuIG9ubHkgYmUgY2FsbGVkIGlmIEBhdHRhY2ggaGFzIGJlZW4gY2Fs bGVkIHN1Y2Nlc3NmdWxseS4KPiAgCSAqCj4gIAkgKiBUaGlzIGNhbGwgbWF5IHNsZWVwLCBlLmcu IHdoZW4gdGhlIGJhY2tpbmcgc3RvcmFnZSBmaXJzdCBuZWVkcyB0byBiZQo+ICAJICogYWxsb2Nh dGVkLCBvciBtb3ZlZCB0byBhIGxvY2F0aW9uIHN1aXRhYmxlIGZvciBhbGwgY3VycmVudGx5IGF0 dGFjaGVkCj4gQEAgLTE0OCw5ICsxNzQsNiBAQCBzdHJ1Y3QgZG1hX2J1Zl9vcHMgewo+ICAJICoK PiAgCSAqIFRoaXMgaXMgY2FsbGVkIGJ5IGRtYV9idWZfdW5tYXBfYXR0YWNobWVudCgpIGFuZCBz aG91bGQgdW5tYXAgYW5kCj4gIAkgKiByZWxlYXNlIHRoZSAmc2dfdGFibGUgYWxsb2NhdGVkIGlu IEBtYXBfZG1hX2J1ZiwgYW5kIGl0IGlzIG1hbmRhdG9yeS4KPiAtCSAqIEl0IHNob3VsZCBhbHNv IHVucGluIHRoZSBiYWNraW5nIHN0b3JhZ2UgaWYgdGhpcyBpcyB0aGUgbGFzdCBtYXBwaW5nCj4g LQkgKiBvZiB0aGUgRE1BIGJ1ZmZlciwgaXQgdGhlIGV4cG9ydGVyIHN1cHBvcnRzIGJhY2tpbmcg c3RvcmFnZQo+IC0JICogbWlncmF0aW9uLgo+ICAJICoKPiAgCSAqIFRoaXMgaXMgYWx3YXlzIGNh bGxlZCB3aXRoIHRoZSBkbWFidWYtPnJlc3Ygb2JqZWN0IGxvY2tlZCB3aGVuCj4gIAkgKiBub19z Z3RfY2FjaGUgaXMgdHJ1ZS4KPiBAQCAtNDQyLDYgKzQ2NSw4IEBAIGludCBkbWFfYnVmX2ZkKHN0 cnVjdCBkbWFfYnVmICpkbWFidWYsIGludCBmbGFncyk7Cj4gIHN0cnVjdCBkbWFfYnVmICpkbWFf YnVmX2dldChpbnQgZmQpOwo+ICB2b2lkIGRtYV9idWZfcHV0KHN0cnVjdCBkbWFfYnVmICpkbWFi dWYpOwo+ICAKPiAraW50IGRtYV9idWZfcGluKHN0cnVjdCBkbWFfYnVmICpkbWFidWYpOwo+ICt2 b2lkIGRtYV9idWZfdW5waW4oc3RydWN0IGRtYV9idWYgKmRtYWJ1Zik7Cj4gIHN0cnVjdCBzZ190 YWJsZSAqZG1hX2J1Zl9tYXBfYXR0YWNobWVudF9sb2NrZWQoc3RydWN0IGRtYV9idWZfYXR0YWNo bWVudCAqLAo+ICAJCQkJCSAgICAgICBlbnVtIGRtYV9kYXRhX2RpcmVjdGlvbik7Cj4gIHN0cnVj dCBzZ190YWJsZSAqZG1hX2J1Zl9tYXBfYXR0YWNobWVudChzdHJ1Y3QgZG1hX2J1Zl9hdHRhY2ht ZW50ICosCj4gLS0gCj4gMi4xNy4xCj4gCj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KPiBkcmktZGV2ZWwgbWFpbGluZyBsaXN0Cj4gZHJpLWRldmVsQGxp c3RzLmZyZWVkZXNrdG9wLm9yZwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxt YW4vbGlzdGluZm8vZHJpLWRldmVsCgotLSAKRGFuaWVsIFZldHRlcgpTb2Z0d2FyZSBFbmdpbmVl ciwgSW50ZWwgQ29ycG9yYXRpb24KaHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KYW1kLWdmeCBtYWlsaW5nIGxpc3QKYW1k LWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcv bWFpbG1hbi9saXN0aW5mby9hbWQtZ2Z4