From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 4.19 087/167] drm/i915: Handle vm_mmap error during I915_GEM_MMAP ioctl with WC set Date: Tue, 3 Sep 2019 12:23:59 -0400 Message-ID: <20190903162519.7136-87-sashal@kernel.org> References: <20190903162519.7136-1-sashal@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190903162519.7136-1-sashal@kernel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sasha Levin , Tvrtko Ursulin , Tvrtko Ursulin , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Adam Zabrocki List-Id: dri-devel@lists.freedesktop.org RnJvbTogSm9vbmFzIExhaHRpbmVuIDxqb29uYXMubGFodGluZW5AbGludXguaW50ZWwuY29tPgoK WyBVcHN0cmVhbSBjb21taXQgZWJmYjY5Nzc4MDFkYTUyMWQ4ZDVkNzUyZDM3M2ExODdlMmEyYjli MyBdCgpBZGQgZXJyIGdvdG8gbGFiZWwgYW5kIHVzZSBpdCB3aGVuIFZNQSBjYW4ndCBiZSBlc3Rh Ymxpc2hlZCBvciBjaGFuZ2VzCnVuZGVybmVhdGguCgp2MjoKLSBEcm9wcGluZyBGaXhlczogYXMg aXQncyBpbmRlZWQgaW1wb3NzaWJsZSB0byByYWNlIGFuIG9iamVjdCB0byB0aGUKICBlcnJvciBh ZGRyZXNzLiAoQ2hyaXMpCnYzOgotIFVzZSBJU19FUlJfVkFMVUUgKENocmlzKQoKUmVwb3J0ZWQt Ynk6IEFkYW0gWmFicm9ja2kgPGFkYW16YUBtaWNyb3NvZnQuY29tPgpTaWduZWQtb2ZmLWJ5OiBK b29uYXMgTGFodGluZW4gPGpvb25hcy5sYWh0aW5lbkBsaW51eC5pbnRlbC5jb20+CkNjOiBDaHJp cyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KQ2M6IFR2cnRrbyBVcnN1bGluIDx0 dnJ0a28udXJzdWxpbkBsaW51eC5pbnRlbC5jb20+CkNjOiBBZGFtIFphYnJvY2tpIDxhZGFtemFA bWljcm9zb2Z0LmNvbT4KUmV2aWV3ZWQtYnk6IFR2cnRrbyBVcnN1bGluIDx0dnJ0a28udXJzdWxp bkBpbnRlbC5jb20+ICN2MgpSZXZpZXdlZC1ieTogQ2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13 aWxzb24uY28udWs+Ckxpbms6IGh0dHBzOi8vcGF0Y2h3b3JrLmZyZWVkZXNrdG9wLm9yZy9wYXRj aC9tc2dpZC8yMDE5MDIwNzA4NTQ1NC4xMDU5OC0yLWpvb25hcy5sYWh0aW5lbkBsaW51eC5pbnRl bC5jb20KU2lnbmVkLW9mZi1ieTogU2FzaGEgTGV2aW4gPHNhc2hhbEBrZXJuZWwub3JnPgotLS0K IGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgfCAxMiArKysrKysrKysrLS0KIDEgZmls ZSBjaGFuZ2VkLCAxMCBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBh L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p OTE1X2dlbS5jCmluZGV4IGU4MWFiZDQ2OGExNWQuLjk2MzRkM2FkYjhkMDEgMTAwNjQ0Ci0tLSBh L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaTkxNV9nZW0uYwpAQCAtMTg4MSw2ICsxODgxLDkgQEAgaTkxNV9nZW1fbW1hcF9pb2N0bChz dHJ1Y3QgZHJtX2RldmljZSAqZGV2LCB2b2lkICpkYXRhLAogCWFkZHIgPSB2bV9tbWFwKG9iai0+ YmFzZS5maWxwLCAwLCBhcmdzLT5zaXplLAogCQkgICAgICAgUFJPVF9SRUFEIHwgUFJPVF9XUklU RSwgTUFQX1NIQVJFRCwKIAkJICAgICAgIGFyZ3MtPm9mZnNldCk7CisJaWYgKElTX0VSUl9WQUxV RShhZGRyKSkKKwkJZ290byBlcnI7CisKIAlpZiAoYXJncy0+ZmxhZ3MgJiBJOTE1X01NQVBfV0Mp IHsKIAkJc3RydWN0IG1tX3N0cnVjdCAqbW0gPSBjdXJyZW50LT5tbTsKIAkJc3RydWN0IHZtX2Fy ZWFfc3RydWN0ICp2bWE7CkBAIC0xODk2LDE3ICsxODk5LDIyIEBAIGk5MTVfZ2VtX21tYXBfaW9j dGwoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdm9pZCAqZGF0YSwKIAkJZWxzZQogCQkJYWRkciA9 IC1FTk9NRU07CiAJCXVwX3dyaXRlKCZtbS0+bW1hcF9zZW0pOworCQlpZiAoSVNfRVJSX1ZBTFVF KGFkZHIpKQorCQkJZ290byBlcnI7CiAKIAkJLyogVGhpcyBtYXkgcmFjZSwgYnV0IHRoYXQncyBv aywgaXQgb25seSBnZXRzIHNldCAqLwogCQlXUklURV9PTkNFKG9iai0+ZnJvbnRidWZmZXJfZ2d0 dF9vcmlnaW4sIE9SSUdJTl9DUFUpOwogCX0KIAlpOTE1X2dlbV9vYmplY3RfcHV0KG9iaik7Ci0J aWYgKElTX0VSUigodm9pZCAqKWFkZHIpKQotCQlyZXR1cm4gYWRkcjsKIAogCWFyZ3MtPmFkZHJf cHRyID0gKHVpbnQ2NF90KSBhZGRyOwogCiAJcmV0dXJuIDA7CisKK2VycjoKKwlpOTE1X2dlbV9v YmplY3RfcHV0KG9iaik7CisKKwlyZXR1cm4gYWRkcjsKIH0KIAogc3RhdGljIHVuc2lnbmVkIGlu dCB0aWxlX3Jvd19wYWdlcyhzdHJ1Y3QgZHJtX2k5MTVfZ2VtX29iamVjdCAqb2JqKQotLSAKMi4y MC4xCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmkt ZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6 Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw=