From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?Christian_K=c3=b6nig?= <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 1/2] drm/amdgpu: return bo itself if userptr is cpu addr
 of bo (v3)
Date: Mon, 30 Jul 2018 12:47:48 +0200
Message-ID: <3d423f44-e47a-e70c-dfd9-80c1ff843e45@gmail.com>
References: <1532944950-28619-1-git-send-email-Jerry.Zhang@amd.com>
Reply-To: christian.koenig-5C7GfCeVMHo@public.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
In-Reply-To: <1532944950-28619-1-git-send-email-Jerry.Zhang-5C7GfCeVMHo@public.gmane.org>
Content-Language: en-US
List-Id: Discussion list for AMD gfx <amd-gfx.lists.freedesktop.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/amd-gfx>
List-Post: <mailto:amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "amd-gfx" <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: Junwei Zhang <Jerry.Zhang-5C7GfCeVMHo@public.gmane.org>, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Cc: Chunming Zhou <David1.Zhou-5C7GfCeVMHo@public.gmane.org>, christian.koenig-5C7GfCeVMHo@public.gmane.org

QW0gMzAuMDcuMjAxOCB1bSAxMjowMiBzY2hyaWViIEp1bndlaSBaaGFuZzoKPiBGcm9tOiBDaHVu
bWluZyBaaG91IDxEYXZpZDEuWmhvdUBhbWQuY29tPgo+Cj4gdjI6IGdldCBvcmlnaW5hbCBnZW0g
aGFuZGxlIGZyb20gZ29iago+IHYzOiB1cGRhdGUgZmluZCBibyBkYXRhIHN0cnVjdHVyZSBhcyB1
bmlvbihpbiwgb3V0KQo+ICAgICAgc2ltcGx5IHNvbWUgY29kZSBsb2dpYwoKRG8gd2Ugbm93IGhh
dmUgYW4gb3BlbiBzb3VyY2UgdXNlciBmb3IgdGhpcywgc28gdGhhdCB3ZSBjYW4gdXBzdHJlYW0g
aXQ/IApPbmUgbW9yZSBwb2ludCBiZWxvdy4KCj4KPiBTaWduZWQtb2ZmLWJ5OiBDaHVubWluZyBa
aG91IDxEYXZpZDEuWmhvdUBhbWQuY29tPgo+IFNpZ25lZC1vZmYtYnk6IEp1bndlaSBaaGFuZyA8
SmVycnkuWmhhbmdAYW1kLmNvbT4gKHYzKQo+IFJldmlld2VkLWJ5OiBDaHJpc3RpYW4gS8O2bmln
IDxjaHJpc3RpYW4ua29lbmlnQGFtZC5jb20+Cj4gUmV2aWV3ZWQtYnk6IEphbW15IFpob3UgPEph
bW15Llpob3VAYW1kLmNvbT4KPiAtLS0KPiAgIGRyaXZlcnMvZ3B1L2RybS9hbWQvYW1kZ3B1L2Ft
ZGdwdS5oICAgICB8ICAyICsrCj4gICBkcml2ZXJzL2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVf
Z2VtLmMgfCA2MyArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysKPiAgIGRyaXZlcnMv
Z3B1L2RybS9hbWQvYW1kZ3B1L2FtZGdwdV9rbXMuYyB8ICAzICstCj4gICBpbmNsdWRlL3VhcGkv
ZHJtL2FtZGdwdV9kcm0uaCAgICAgICAgICAgfCAyMSArKysrKysrKysrKwo+ICAgNCBmaWxlcyBj
aGFuZ2VkLCA4OCBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4KPiBkaWZmIC0tZ2l0IGEv
ZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1LmggYi9kcml2ZXJzL2dwdS9kcm0vYW1k
L2FtZGdwdS9hbWRncHUuaAo+IGluZGV4IDRjZDIwZTcuLjQ2YzM3MGIgMTAwNjQ0Cj4gLS0tIGEv
ZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1LmgKPiArKysgYi9kcml2ZXJzL2dwdS9k
cm0vYW1kL2FtZGdwdS9hbWRncHUuaAo+IEBAIC0xMjEzLDYgKzEyMTMsOCBAQCBpbnQgYW1kZ3B1
X2dlbV9pbmZvX2lvY3RsKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYsIHZvaWQgKmRhdGEsCj4gICAJ
CQkgIHN0cnVjdCBkcm1fZmlsZSAqZmlscCk7Cj4gICBpbnQgYW1kZ3B1X2dlbV91c2VycHRyX2lv
Y3RsKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYsIHZvaWQgKmRhdGEsCj4gICAJCQlzdHJ1Y3QgZHJt
X2ZpbGUgKmZpbHApOwo+ICtpbnQgYW1kZ3B1X2dlbV9maW5kX2JvX2J5X2NwdV9tYXBwaW5nX2lv
Y3RsKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYsIHZvaWQgKmRhdGEsCj4gKwkJCQkJICAgIHN0cnVj
dCBkcm1fZmlsZSAqZmlscCk7Cj4gICBpbnQgYW1kZ3B1X2dlbV9tbWFwX2lvY3RsKHN0cnVjdCBk
cm1fZGV2aWNlICpkZXYsIHZvaWQgKmRhdGEsCj4gICAJCQkgIHN0cnVjdCBkcm1fZmlsZSAqZmls
cCk7Cj4gICBpbnQgYW1kZ3B1X2dlbV93YWl0X2lkbGVfaW9jdGwoc3RydWN0IGRybV9kZXZpY2Ug
KmRldiwgdm9pZCAqZGF0YSwKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRn
cHUvYW1kZ3B1X2dlbS5jIGIvZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1X2dlbS5j
Cj4gaW5kZXggNzE3OTJkOC4uYmFlODQxNyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0v
YW1kL2FtZGdwdS9hbWRncHVfZ2VtLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vYW1kL2FtZGdw
dS9hbWRncHVfZ2VtLmMKPiBAQCAtMjg4LDYgKzI4OCw2OSBAQCBpbnQgYW1kZ3B1X2dlbV9jcmVh
dGVfaW9jdGwoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdm9pZCAqZGF0YSwKPiAgIAlyZXR1cm4g
MDsKPiAgIH0KPiAgIAo+ICtzdGF0aWMgaW50IGFtZGdwdV9nZW1fZ2V0X2hhbmRsZV9mcm9tX29i
amVjdChzdHJ1Y3QgZHJtX2ZpbGUgKmZpbHAsCj4gKwkJCQkJICAgICBzdHJ1Y3QgZHJtX2dlbV9v
YmplY3QgKm9iaikKPiArewo+ICsJaW50IGk7Cj4gKwlzdHJ1Y3QgZHJtX2dlbV9vYmplY3QgKnRt
cDsKPiArCj4gKwlzcGluX2xvY2soJmZpbHAtPnRhYmxlX2xvY2spOwo+ICsJaWRyX2Zvcl9lYWNo
X2VudHJ5KCZmaWxwLT5vYmplY3RfaWRyLCB0bXAsIGkpIHsKPiArCQlpZiAob2JqID09IHRtcCkg
ewo+ICsJCQlkcm1fZ2VtX29iamVjdF9yZWZlcmVuY2Uob2JqKTsKPiArCQkJc3Bpbl91bmxvY2so
JmZpbHAtPnRhYmxlX2xvY2spOwo+ICsJCQlyZXR1cm4gaTsKPiArCQl9Cj4gKwl9CgpQbGVhc2Ug
ZG91YmxlIGNoZWNrIGlmIHRoYXQgaXMgc3RpbGwgdXAgdG8gZGF0ZS4KCkkgdGhpbmsgd2UgY291
bGQgYXMgd2VsbCB0cnkgdG8gdXNlIHRoZSBETUEtYnVmIGhhbmRsZSB0cmVlIGZvciB0aGF0LgoK
Q2hyaXN0aWFuLgoKPiArCXNwaW5fdW5sb2NrKCZmaWxwLT50YWJsZV9sb2NrKTsKPiArCj4gKwly
ZXR1cm4gMDsKPiArfQo+ICsKPiAraW50IGFtZGdwdV9nZW1fZmluZF9ib19ieV9jcHVfbWFwcGlu
Z19pb2N0bChzdHJ1Y3QgZHJtX2RldmljZSAqZGV2LCB2b2lkICpkYXRhLAo+ICsJCQkJCSAgICBz
dHJ1Y3QgZHJtX2ZpbGUgKmZpbHApCj4gK3sKPiArCXVuaW9uIGRybV9hbWRncHVfZ2VtX2ZpbmRf
Ym8gKmFyZ3MgPSBkYXRhOwo+ICsJc3RydWN0IGRybV9nZW1fb2JqZWN0ICpnb2JqOwo+ICsJc3Ry
dWN0IGFtZGdwdV9ibyAqYm87Cj4gKwlzdHJ1Y3QgdHRtX2J1ZmZlcl9vYmplY3QgKnRibzsKPiAr
CXN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hOwo+ICsJdWludDMyX3QgaGFuZGxlOwo+ICsJaW50
IHI7Cj4gKwo+ICsJaWYgKG9mZnNldF9pbl9wYWdlKGFyZ3MtPmluLmFkZHIgfCBhcmdzLT5pbi5z
aXplKSkKPiArCQlyZXR1cm4gLUVJTlZBTDsKPiArCj4gKwlkb3duX3JlYWQoJmN1cnJlbnQtPm1t
LT5tbWFwX3NlbSk7Cj4gKwl2bWEgPSBmaW5kX3ZtYShjdXJyZW50LT5tbSwgYXJncy0+aW4uYWRk
cik7Cj4gKwlpZiAoIXZtYSB8fCB2bWEtPnZtX2ZpbGUgIT0gZmlscC0+ZmlscCB8fAo+ICsJICAg
IChhcmdzLT5pbi5zaXplID4gKHZtYS0+dm1fZW5kIC0gYXJncy0+aW4uYWRkcikpKSB7Cj4gKwkJ
YXJncy0+b3V0LmhhbmRsZSA9IDA7Cj4gKwkJdXBfcmVhZCgmY3VycmVudC0+bW0tPm1tYXBfc2Vt
KTsKPiArCQlyZXR1cm4gLUVJTlZBTDsKPiArCX0KPiArCWFyZ3MtPm91dC5vZmZzZXQgPSBhcmdz
LT5pbi5hZGRyIC0gdm1hLT52bV9zdGFydDsKPiArCj4gKwl0Ym8gPSB2bWEtPnZtX3ByaXZhdGVf
ZGF0YTsKPiArCWJvID0gY29udGFpbmVyX29mKHRibywgc3RydWN0IGFtZGdwdV9ibywgdGJvKTsK
PiArCWFtZGdwdV9ib19yZWYoYm8pOwo+ICsJZ29iaiA9ICZiby0+Z2VtX2Jhc2U7Cj4gKwo+ICsJ
aGFuZGxlID0gYW1kZ3B1X2dlbV9nZXRfaGFuZGxlX2Zyb21fb2JqZWN0KGZpbHAsIGdvYmopOwo+
ICsJaWYgKCFoYW5kbGUpIHsKPiArCQlyID0gZHJtX2dlbV9oYW5kbGVfY3JlYXRlKGZpbHAsIGdv
YmosICZoYW5kbGUpOwo+ICsJCWlmIChyKSB7Cj4gKwkJCURSTV9FUlJPUigiY3JlYXRlIGdlbSBo
YW5kbGUgZmFpbGVkXG4iKTsKPiArCQkJdXBfcmVhZCgmY3VycmVudC0+bW0tPm1tYXBfc2VtKTsK
PiArCQkJcmV0dXJuIHI7Cj4gKwkJfQo+ICsJfQo+ICsJYXJncy0+b3V0LmhhbmRsZSA9IGhhbmRs
ZTsKPiArCXVwX3JlYWQoJmN1cnJlbnQtPm1tLT5tbWFwX3NlbSk7Cj4gKwo+ICsJcmV0dXJuIDA7
Cj4gK30KPiArCj4gICBpbnQgYW1kZ3B1X2dlbV91c2VycHRyX2lvY3RsKHN0cnVjdCBkcm1fZGV2
aWNlICpkZXYsIHZvaWQgKmRhdGEsCj4gICAJCQkgICAgIHN0cnVjdCBkcm1fZmlsZSAqZmlscCkK
PiAgIHsKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1X2tt
cy5jIGIvZHJpdmVycy9ncHUvZHJtL2FtZC9hbWRncHUvYW1kZ3B1X2ttcy5jCj4gaW5kZXggNzk1
Njg0OC4uMWJkMmNjMSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vYW1kL2FtZGdwdS9h
bWRncHVfa21zLmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfa21z
LmMKPiBAQCAtMTEwMCw3ICsxMTAwLDggQEAgdm9pZCBhbWRncHVfZGlzYWJsZV92Ymxhbmtfa21z
KHN0cnVjdCBkcm1fZGV2aWNlICpkZXYsIHVuc2lnbmVkIGludCBwaXBlKQo+ICAgCURSTV9JT0NU
TF9ERUZfRFJWKEFNREdQVV9HRU1fVkEsIGFtZGdwdV9nZW1fdmFfaW9jdGwsIERSTV9BVVRIfERS
TV9SRU5ERVJfQUxMT1cpLAo+ICAgCURSTV9JT0NUTF9ERUZfRFJWKEFNREdQVV9HRU1fT1AsIGFt
ZGdwdV9nZW1fb3BfaW9jdGwsIERSTV9BVVRIfERSTV9SRU5ERVJfQUxMT1cpLAo+ICAgCURSTV9J
T0NUTF9ERUZfRFJWKEFNREdQVV9HRU1fVVNFUlBUUiwgYW1kZ3B1X2dlbV91c2VycHRyX2lvY3Rs
LCBEUk1fQVVUSHxEUk1fUkVOREVSX0FMTE9XKSwKPiAtCURSTV9JT0NUTF9ERUZfRFJWKEFNREdQ
VV9GUkVFU1lOQywgYW1kZ3B1X2Rpc3BsYXlfZnJlZXN5bmNfaW9jdGwsIERSTV9NQVNURVIpCj4g
KwlEUk1fSU9DVExfREVGX0RSVihBTURHUFVfRlJFRVNZTkMsIGFtZGdwdV9kaXNwbGF5X2ZyZWVz
eW5jX2lvY3RsLCBEUk1fTUFTVEVSKSwKPiArCURSTV9JT0NUTF9ERUZfRFJWKEFNREdQVV9HRU1f
RklORF9CTywgYW1kZ3B1X2dlbV9maW5kX2JvX2J5X2NwdV9tYXBwaW5nX2lvY3RsLCBEUk1fQVVU
SHxEUk1fUkVOREVSX0FMTE9XKQo+ICAgfTsKPiAgIGNvbnN0IGludCBhbWRncHVfbWF4X2ttc19p
b2N0bCA9IEFSUkFZX1NJWkUoYW1kZ3B1X2lvY3Rsc19rbXMpOwo+ICAgCj4gZGlmZiAtLWdpdCBh
L2luY2x1ZGUvdWFwaS9kcm0vYW1kZ3B1X2RybS5oIGIvaW5jbHVkZS91YXBpL2RybS9hbWRncHVf
ZHJtLmgKPiBpbmRleCA5NDQ0NGVlLi4wMDBjNDE1IDEwMDY0NAo+IC0tLSBhL2luY2x1ZGUvdWFw
aS9kcm0vYW1kZ3B1X2RybS5oCj4gKysrIGIvaW5jbHVkZS91YXBpL2RybS9hbWRncHVfZHJtLmgK
PiBAQCAtNTQsNiArNTQsNyBAQAo+ICAgI2RlZmluZSBEUk1fQU1ER1BVX1ZNCQkJMHgxMwo+ICAg
I2RlZmluZSBEUk1fQU1ER1BVX0ZFTkNFX1RPX0hBTkRMRQkweDE0Cj4gICAjZGVmaW5lIERSTV9B
TURHUFVfU0NIRUQJCTB4MTUKPiArI2RlZmluZSBEUk1fQU1ER1BVX0dFTV9GSU5EX0JPCQkweDE2
Cj4gICAvKiBub3QgdXBzdHJlYW0gKi8KPiAgICNkZWZpbmUgRFJNX0FNREdQVV9GUkVFU1lOQwkg
ICAgICAgIDB4NWQKPiAgIAo+IEBAIC03NCw2ICs3NSw3IEBACj4gICAjZGVmaW5lIERSTV9JT0NU
TF9BTURHUFVfRkVOQ0VfVE9fSEFORExFIERSTV9JT1dSKERSTV9DT01NQU5EX0JBU0UgKyBEUk1f
QU1ER1BVX0ZFTkNFX1RPX0hBTkRMRSwgdW5pb24gZHJtX2FtZGdwdV9mZW5jZV90b19oYW5kbGUp
Cj4gICAjZGVmaW5lIERSTV9JT0NUTF9BTURHUFVfU0NIRUQJCURSTV9JT1coRFJNX0NPTU1BTkRf
QkFTRSArIERSTV9BTURHUFVfU0NIRUQsIHVuaW9uIGRybV9hbWRncHVfc2NoZWQpCj4gICAjZGVm
aW5lIERSTV9JT0NUTF9BTURHUFVfRlJFRVNZTkMJRFJNX0lPV1IoRFJNX0NPTU1BTkRfQkFTRSAr
IERSTV9BTURHUFVfRlJFRVNZTkMsIHN0cnVjdCBkcm1fYW1kZ3B1X2ZyZWVzeW5jKQo+ICsjZGVm
aW5lIERSTV9JT0NUTF9BTURHUFVfR0VNX0ZJTkRfQk8JRFJNX0lPV1IoRFJNX0NPTU1BTkRfQkFT
RSArIERSTV9BTURHUFVfR0VNX0ZJTkRfQk8sIHVuaW9uIGRybV9hbWRncHVfZ2VtX2ZpbmRfYm8p
Cj4gICAKPiAgIC8qKgo+ICAgICogRE9DOiBtZW1vcnkgZG9tYWlucwo+IEBAIC0zOTIsNiArMzk0
LDI1IEBAIHN0cnVjdCBkcm1fYW1kZ3B1X2dlbV93YWl0X2lkbGVfb3V0IHsKPiAgIAlzdHJ1Y3Qg
ZHJtX2FtZGdwdV9nZW1fd2FpdF9pZGxlX291dCBvdXQ7Cj4gICB9Owo+ICAgCj4gK3N0cnVjdCBk
cm1fYW1kZ3B1X2dlbV9maW5kX2JvX2luIHsKPiArCS8qIENQVSBhZGRyZXNzICovCj4gKwlfX3U2
NAkJCWFkZHI7Cj4gKwkvKiBtZW1vcnkgc2l6ZSBmcm9tIENQVSBhZGRyZXNzICovCj4gKwlfX3U2
NAkJCXNpemU7Cj4gK307Cj4gKwo+ICtzdHJ1Y3QgZHJtX2FtZGdwdV9nZW1fZmluZF9ib19vdXQg
ewo+ICsJLyogb2Zmc2V0IGluIGJvICovCj4gKwlfX3U2NAkJCW9mZnNldDsKPiArCS8qIHJlc3Vs
dGluZyBHRU0gaGFuZGxlICovCj4gKwlfX3UzMgkJCWhhbmRsZTsKPiArfTsKPiArCj4gK3VuaW9u
IGRybV9hbWRncHVfZ2VtX2ZpbmRfYm8gewo+ICsJc3RydWN0IGRybV9hbWRncHVfZ2VtX2ZpbmRf
Ym9faW4gaW47Cj4gKwlzdHJ1Y3QgZHJtX2FtZGdwdV9nZW1fZmluZF9ib19vdXQgb3V0Owo+ICt9
Owo+ICsKPiAgIHN0cnVjdCBkcm1fYW1kZ3B1X3dhaXRfY3NfaW4gewo+ICAgCS8qIENvbW1hbmQg
c3VibWlzc2lvbiBoYW5kbGUKPiAgICAgICAgICAgICogaGFuZGxlIGVxdWFscyAwIG1lYW5zIG5v
bmUgdG8gd2FpdCBmb3IKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f
X19fX19fCmFtZC1nZnggbWFpbGluZyBsaXN0CmFtZC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3Jn
Cmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vYW1kLWdmeAo=