From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH 2/2] drm/i915: Reorder hw init to avoid
 executing with invalid context/mm state
Date: Fri, 5 Dec 2014 16:31:35 +0200
Message-ID: <20141205143135.GL10649@intel.com>
References: <1417788922-1564-1-git-send-email-chris@chris-wilson.co.uk>
 <1417788922-1564-2-git-send-email-chris@chris-wilson.co.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga03.intel.com (mga03.intel.com [134.134.136.65])
 by gabe.freedesktop.org (Postfix) with ESMTP id 61F296E9CD
 for <intel-gfx@lists.freedesktop.org>; Fri,  5 Dec 2014 06:31:38 -0800 (PST)
Content-Disposition: inline
In-Reply-To: <1417788922-1564-2-git-send-email-chris@chris-wilson.co.uk>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

T24gRnJpLCBEZWMgMDUsIDIwMTQgYXQgMDI6MTU6MjJQTSArMDAwMCwgQ2hyaXMgV2lsc29uIHdy
b3RlOgo+IEN1cnJlbnRseSB3ZSBpbml0aWFsaXNlIHRoZSByaW5ncywgYWRkIHRoZSBmaXJzdCBj
b250ZXh0IHN3aXRjaCB0byB0aGUKPiByaW5nIGFuZCBleGVjdXRlIG91ciBnb2xkZW4gc3RhdGUg
dGhlbiBlbmFibGUgKGFsaWFzaW5nIG9yIGZ1bGwpIHBwZ3R0Lgo+IEhvd2V2ZXIsIGFzIHdlIGVu
YWJsZSBwcGd0dCB1c2luZyBkaXJlY3QgTU1JTyBidXQgbG9hZCB0aGUgUEQgdXNpbmcKPiBNSV9M
UkksIHdlIGVuZCB1cCBleGVjdXRpbmcgdGhlIGNvbnRleHQgc3dpdGNoIGFuZCBnb2xkZW4gcmVu
ZGVyIHN0YXRlCj4gd2l0aCBhbiBpbnZhbGlkIFBEIGdlbmVyYXRpbmcgcGFnZSBmYXVsdHMuIFRv
IHNvbHZlIHRoaXMgaXNzdWUsIGZpcnN0IGRvCj4gdGhlIHBwZ3R0IFBEIHNldHVwLCB0aGVuIHNl
dCB0aGUgZGVmYXVsdCBjb250ZXh0IGFuZCB3cml0ZSB0aGUgY29tbWFuZHMKPiB0byBydW4gdGhl
IHJlbmRlciBzdGF0ZSBpbnRvIHRoZSByaW5nLCBiZWZvcmUgd2UgYWN0aXZhdGUgdGhlIHJpbmcu
IFRoaXMKPiBhbGxvd3MgdXMgdG8gYmUgc3VyZSB0aGF0IHRoZSByZWdpc3RlciBzdGF0ZSBpcyB2
YWxpZCBiZWZvcmUgd2UgYmVnaW4KPiBleGVjdXRpb24uCj4gCj4gVGhpcyB3YXMgc3BvdHRlZCB3
aGVuIHdyaXRpbmcgdGhlIHNlcW5vL3JlcXVlc3QgY29udmVyc2lvbiwgYnV0IG9ubHkgd2l0aAo+
IHRoZSBFUlJPUiBjYXB0dXJlIGRpZCBJIHJlYWxpc2UgdGhhdCBpdCB3YXMgYSBuZWNlc3NpdHkg
bm93Lgo+IAo+IFJGQzogY2xlYW51cCB0aGUgZXJyb3IgaGFuZGxpbmcgaW4gaTkxNV9nZW1faW5p
dF9ody4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNv
bi5jby51az4KPiAtLS0KPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYyAgICAgICAg
IHwgMjAgKysrKysrKysrKy0tLS0tLS0tLS0KPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf
cmluZ2J1ZmZlci5jIHwgIDkgKysrKysrLS0tCj4gIDIgZmlsZXMgY2hhbmdlZCwgMTYgaW5zZXJ0
aW9ucygrKSwgMTMgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2Ry
bS9pOTE1L2k5MTVfZ2VtLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCj4gaW5k
ZXggYzFjMTE0MTgyMzFiLi5jMTM4NDJkM2NiYzkgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUv
ZHJtL2k5MTUvaTkxNV9nZW0uYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2Vt
LmMKPiBAQCAtNDc5NiwxNSArNDc5NiwxNSBAQCBpOTE1X2dlbV9pbml0X2h3KHN0cnVjdCBkcm1f
ZGV2aWNlICpkZXYpCj4gIAkgKi8KPiAgCWluaXRfdW51c2VkX3JpbmdzKGRldik7Cj4gIAo+IC0J
Zm9yX2VhY2hfcmluZyhyaW5nLCBkZXZfcHJpdiwgaSkgewo+IC0JCXJldCA9IHJpbmctPmluaXRf
aHcocmluZyk7Cj4gLQkJaWYgKHJldCkKPiAtCQkJcmV0dXJuIHJldDsKPiAtCX0KPiAtCj4gIAlm
b3IgKGkgPSAwOyBpIDwgTlVNX0wzX1NMSUNFUyhkZXYpOyBpKyspCj4gIAkJaTkxNV9nZW1fbDNf
cmVtYXAoJmRldl9wcml2LT5yaW5nW1JDU10sIGkpOwoKVGhpcyBpcyBnb2luZyB0byBhc3N1bWUg
cmluZy0+aGVhZC90YWlsIGFyZSBhbHJlYWR5IHZhbGlkPwoKPiAgCj4gKwlyZXQgPSBpOTE1X3Bw
Z3R0X2luaXRfaHcoZGV2KTsKPiArCWlmIChyZXQgJiYgcmV0ICE9IC1FSU8pIHsKPiArCQlEUk1f
RVJST1IoIlBQR1RUIGVuYWJsZSBmYWlsZWQgJWRcbiIsIHJldCk7Cj4gKwkJaTkxNV9nZW1fY2xl
YW51cF9yaW5nYnVmZmVyKGRldik7Cj4gKwl9Cj4gKwo+ICAJLyoKPiAgCSAqIFhYWDogQ29udGV4
dHMgc2hvdWxkIG9ubHkgYmUgaW5pdGlhbGl6ZWQgb25jZS4gRG9pbmcgYSBzd2l0Y2ggdG8gdGhl
Cj4gIAkgKiBkZWZhdWx0IGNvbnRleHQgc3dpdGNoIGhvd2V2ZXIgaXMgc29tZXRoaW5nIHdlJ2Qg
bGlrZSB0byBkbyBhZnRlcgo+IEBAIC00ODIwLDEwICs0ODIwLDEwIEBAIGk5MTVfZ2VtX2luaXRf
aHcoc3RydWN0IGRybV9kZXZpY2UgKmRldikKPiAgCQlyZXR1cm4gcmV0Owo+ICAJfQo+ICAKPiAt
CXJldCA9IGk5MTVfcHBndHRfaW5pdF9odyhkZXYpOwo+IC0JaWYgKHJldCAmJiByZXQgIT0gLUVJ
Tykgewo+IC0JCURSTV9FUlJPUigiUFBHVFQgZW5hYmxlIGZhaWxlZCAlZFxuIiwgcmV0KTsKPiAt
CQlpOTE1X2dlbV9jbGVhbnVwX3JpbmdidWZmZXIoZGV2KTsKPiArCWZvcl9lYWNoX3Jpbmcocmlu
ZywgZGV2X3ByaXYsIGkpIHsKPiArCQlyZXQgPSByaW5nLT5pbml0X2h3KHJpbmcpOwo+ICsJCWlm
IChyZXQpCj4gKwkJCXJldHVybiByZXQ7Cj4gIAl9Cj4gIAo+ICAJcmV0dXJuIHJldDsKPiBkaWZm
IC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcmluZ2J1ZmZlci5jIGIvZHJpdmVy
cy9ncHUvZHJtL2k5MTUvaW50ZWxfcmluZ2J1ZmZlci5jCj4gaW5kZXggZGUzOGIwNDEzNWQyLi45
NWViY2U3M2Q0NmQgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcmlu
Z2J1ZmZlci5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcmluZ2J1ZmZlci5j
Cj4gQEAgLTU4NSw2ICs1ODUsOSBAQCBzdGF0aWMgaW50IGluaXRfcmluZ19jb21tb24oc3RydWN0
IGludGVsX2VuZ2luZV9jcyAqcmluZykKPiAgCUk5MTVfV1JJVEVfSEVBRChyaW5nLCAwKTsKPiAg
CSh2b2lkKUk5MTVfUkVBRF9IRUFEKHJpbmcpOwo+ICAKPiArCUk5MTVfV1JJVEVfSEVBRChyaW5n
LCByaW5nYnVmLT5oZWFkKTsKPiArCUk5MTVfV1JJVEVfVEFJTChyaW5nLCByaW5nYnVmLT5oZWFk
KTsKCkhlcmUgdG9vLgoKU28gd2hhdCBoYXBwZW5zIG9uIEdQVSByZXNldD8KCj4gKwo+ICAJSTkx
NV9XUklURV9DVEwocmluZywKPiAgCQkJKChyaW5nYnVmLT5zaXplIC0gUEFHRV9TSVpFKSAmIFJJ
TkdfTlJfUEFHRVMpCj4gIAkJCXwgUklOR19WQUxJRCk7Cj4gQEAgLTU5Miw3ICs1OTUsNyBAQCBz
dGF0aWMgaW50IGluaXRfcmluZ19jb21tb24oc3RydWN0IGludGVsX2VuZ2luZV9jcyAqcmluZykK
PiAgCS8qIElmIHRoZSBoZWFkIGlzIHN0aWxsIG5vdCB6ZXJvLCB0aGUgcmluZyBpcyBkZWFkICov
Cj4gIAlpZiAod2FpdF9mb3IoKEk5MTVfUkVBRF9DVEwocmluZykgJiBSSU5HX1ZBTElEKSAhPSAw
ICYmCj4gIAkJICAgICBJOTE1X1JFQURfU1RBUlQocmluZykgPT0gaTkxNV9nZW1fb2JqX2dndHRf
b2Zmc2V0KG9iaikgJiYKPiAtCQkgICAgIChJOTE1X1JFQURfSEVBRChyaW5nKSAmIEhFQURfQURE
UikgPT0gMCwgNTApKSB7Cj4gKwkJICAgICAoSTkxNV9SRUFEX0hFQUQocmluZykgJiBIRUFEX0FE
RFIpID09IHJpbmdidWYtPmhlYWQsIDUwKSkgewo+ICAJCURSTV9FUlJPUigiJXMgaW5pdGlhbGl6
YXRpb24gZmFpbGVkICIKPiAgCQkJICAiY3RsICUwOHggKHZhbGlkPyAlZCkgaGVhZCAlMDh4IHRh
aWwgJTA4eCBzdGFydCAlMDh4IFtleHBlY3RlZCAlMDhseF1cbiIsCj4gIAkJCSAgcmluZy0+bmFt
ZSwKPiBAQCAtNjAzLDkgKzYwNiw5IEBAIHN0YXRpYyBpbnQgaW5pdF9yaW5nX2NvbW1vbihzdHJ1
Y3QgaW50ZWxfZW5naW5lX2NzICpyaW5nKQo+ICAJCWdvdG8gb3V0Owo+ICAJfQo+ICAKPiArCUk5
MTVfV1JJVEVfVEFJTChyaW5nLCByaW5nYnVmLT50YWlsKTsKPiArCj4gIAlyaW5nYnVmLT5sYXN0
X3JldGlyZWRfaGVhZCA9IC0xOwo+IC0JcmluZ2J1Zi0+aGVhZCA9IEk5MTVfUkVBRF9IRUFEKHJp
bmcpOwo+IC0JcmluZ2J1Zi0+dGFpbCA9IEk5MTVfUkVBRF9UQUlMKHJpbmcpICYgVEFJTF9BRERS
Owo+ICAJaW50ZWxfcmluZ191cGRhdGVfc3BhY2UocmluZ2J1Zik7Cj4gIAo+ICAJbWVtc2V0KCZy
aW5nLT5oYW5nY2hlY2ssIDAsIHNpemVvZihyaW5nLT5oYW5nY2hlY2spKTsKPiAtLSAKPiAyLjEu
Mwo+IAo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4g
SW50ZWwtZ2Z4IG1haWxpbmcgbGlzdAo+IEludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcK
PiBodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4
CgotLSAKVmlsbGUgU3lyasOkbMOkCkludGVsIE9UQwpfX19fX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBs
aXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFu
L2xpc3RpbmZvL2ludGVsLWdmeAo=