From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: [PATCH v3 3/3] drm/vgem: Keep a reference to the dmabuf when mmaped Date: Fri, 30 Sep 2016 14:59:59 +0100 Message-ID: <20160930135959.9159-3-chris@chris-wilson.co.uk> References: <20160930135959.9159-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20160930135959.9159-1-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org SW4gb3JkZXIgdG8ga2VlcCB0aGUgZG1hYnVmIGFsaXZlIHdoaWxzdCB0aGUgbW1hcCBpcywgd2Ug bmVlZCB0byBob2xkIGEKcmVmZXJlbmNlIHRvIHRoZSBkbWFidWYgYW5kIG5vdCB0aGUgYmFja2lu ZyBvYmplY3QuIFRoaXMgaXMgaW1wb3J0YW50IGFzCnRoZSBkbWFidWYgbm90IG9ubHkga2VlcHMg dGhlIG9iamVjdCBhbGl2ZSwgYnV0IGFsc28gdGhlIGRldmljZSBzbyB0aGF0CgoJZG1hYnVmID0g dmdlbV9jcmVhdGVfZG1hYnVmKCk7CglwdHIgPSBtbWFwKC4uLiBkbWFidWYgLi4uKTsKCWNsb3Nl KGRtYWJ1Zik7CgpwZXJzaXN0cyBhY3Jvc3MgbW9kdWxlLXVubG9hZCBhcyB3ZWxsIGFzIGRldmlj ZSBjbG9zdXJlLgoKVGVzdGNhc2U6IGlndC92Z2VtX2Jhc2ljL3VubG9hZApTaWduZWQtb2ZmLWJ5 OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KQ2M6IFBldHJpIExhdHZh bGEgPHBldHJpLmxhdHZhbGFAaW50ZWwuY29tPgotLS0KIGRyaXZlcnMvZ3B1L2RybS92Z2VtL3Zn ZW1fZHJ2LmMgfCAxNyArKystLS0tLS0tLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0 aW9ucygrKSwgMTQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL3Zn ZW0vdmdlbV9kcnYuYyBiL2RyaXZlcnMvZ3B1L2RybS92Z2VtL3ZnZW1fZHJ2LmMKaW5kZXggZjM2 YzE0NzI5YjU1Li43NGE4M2U0MWVmYTkgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS92Z2Vt L3ZnZW1fZHJ2LmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL3ZnZW0vdmdlbV9kcnYuYwpAQCAtMTk4 LDcgKzE5OCw2IEBAIHN0YXRpYyBzdHJ1Y3QgZHJtX2lvY3RsX2Rlc2MgdmdlbV9pb2N0bHNbXSA9 IHsKIAogc3RhdGljIGludCB2Z2VtX21tYXAoc3RydWN0IGZpbGUgKmZpbHAsIHN0cnVjdCB2bV9h cmVhX3N0cnVjdCAqdm1hKQogewotCXVuc2lnbmVkIGxvbmcgZmxhZ3MgPSB2bWEtPnZtX2ZsYWdz OwogCWludCByZXQ7CiAKIAlyZXQgPSBkcm1fZ2VtX21tYXAoZmlscCwgdm1hKTsKQEAgLTIwOCw3 ICsyMDcsNyBAQCBzdGF0aWMgaW50IHZnZW1fbW1hcChzdHJ1Y3QgZmlsZSAqZmlscCwgc3RydWN0 IHZtX2FyZWFfc3RydWN0ICp2bWEpCiAJLyogS2VlcCB0aGUgV0MgbW1hcGluZyBzZXQgYnkgZHJt X2dlbV9tbWFwKCkgYnV0IG91ciBwYWdlcwogCSAqIGFyZSBvcmRpbmFyeSBhbmQgbm90IHNwZWNp YWwuCiAJICovCi0Jdm1hLT52bV9mbGFncyA9IGZsYWdzIHwgVk1fRE9OVEVYUEFORCB8IFZNX0RP TlREVU1QOworCXZtYS0+dm1fZmxhZ3MgJj0gfihWTV9JTyB8IFZNX1BGTk1BUCk7CiAJcmV0dXJu IDA7CiB9CiAKQEAgLTI4MSwyMSArMjgwLDExIEBAIHN0YXRpYyBpbnQgdmdlbV9wcmltZV9tbWFw KHN0cnVjdCBkcm1fZ2VtX29iamVjdCAqb2JqLAogewogCWludCByZXQ7CiAKLQlpZiAob2JqLT5z aXplIDwgdm1hLT52bV9lbmQgLSB2bWEtPnZtX3N0YXJ0KQotCQlyZXR1cm4gLUVJTlZBTDsKLQot CWlmICghb2JqLT5maWxwKQotCQlyZXR1cm4gLUVOT0RFVjsKLQotCXJldCA9IG9iai0+ZmlscC0+ Zl9vcC0+bW1hcChvYmotPmZpbHAsIHZtYSk7CisJcmV0ID0gZHJtX2dlbV9tbWFwX29iaihvYmos IG9iai0+c2l6ZSwgdm1hKTsKIAlpZiAocmV0KQogCQlyZXR1cm4gcmV0OwogCi0JZnB1dCh2bWEt PnZtX2ZpbGUpOwotCXZtYS0+dm1fZmlsZSA9IGdldF9maWxlKG9iai0+ZmlscCk7Ci0Jdm1hLT52 bV9mbGFncyB8PSBWTV9ET05URVhQQU5EIHwgVk1fRE9OVERVTVA7Ci0Jdm1hLT52bV9wYWdlX3By b3QgPSBwZ3Byb3Rfd3JpdGVjb21iaW5lKHZtX2dldF9wYWdlX3Byb3Qodm1hLT52bV9mbGFncykp OwotCisJdm1hLT52bV9mbGFncyAmPSB+KFZNX0lPIHwgVk1fUEZOTUFQKTsKIAlyZXR1cm4gMDsK IH0KIAotLSAKMi45LjMKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9w Lm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVs LWdmeAo=