From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH] drm/ioctl: Fix Spectre v1 vulnerabilities Date: Thu, 20 Dec 2018 08:14:05 +0100 Message-ID: <20181220071404.GD21184@phenom.ffwll.local> References: <20181220000015.GA18973@embeddedor> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-ed1-x543.google.com (mail-ed1-x543.google.com [IPv6:2a00:1450:4864:20::543]) by gabe.freedesktop.org (Postfix) with ESMTPS id 36CCB6F23D for ; Thu, 20 Dec 2018 07:14:09 +0000 (UTC) Received: by mail-ed1-x543.google.com with SMTP id p6so848885eds.0 for ; Wed, 19 Dec 2018 23:14:09 -0800 (PST) Content-Disposition: inline In-Reply-To: <20181220000015.GA18973@embeddedor> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: "Gustavo A. R. Silva" Cc: Maxime Ripard , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , Sean Paul List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBEZWMgMTksIDIwMTggYXQgMDY6MDA6MTVQTSAtMDYwMCwgR3VzdGF2byBBLiBSLiBT aWx2YSB3cm90ZToKPiBuciBpcyBpbmRpcmVjdGx5IGNvbnRyb2xsZWQgYnkgdXNlci1zcGFjZSwg aGVuY2UgbGVhZGluZyB0byBhCj4gcG90ZW50aWFsIGV4cGxvaXRhdGlvbiBvZiB0aGUgU3BlY3Ry ZSB2YXJpYW50IDEgdnVsbmVyYWJpbGl0eS4KPiAKPiBUaGlzIGlzc3VlIHdhcyBkZXRlY3RlZCB3 aXRoIHRoZSBoZWxwIG9mIFNtYXRjaDoKPiAKPiBkcml2ZXJzL2dwdS9kcm0vZHJtX2lvY3RsLmM6 ODA1IGRybV9pb2N0bCgpIHdhcm46IHBvdGVudGlhbCBzcGVjdHJlIGlzc3VlICdkZXYtPmRyaXZl ci0+aW9jdGxzJyBbcl0KPiBkcml2ZXJzL2dwdS9kcm0vZHJtX2lvY3RsLmM6ODEwIGRybV9pb2N0 bCgpIHdhcm46IHBvdGVudGlhbCBzcGVjdHJlIGlzc3VlICdkcm1faW9jdGxzJyBbcl0gKGxvY2Fs IGNhcCkKPiBkcml2ZXJzL2dwdS9kcm0vZHJtX2lvY3RsLmM6ODkyIGRybV9pb2N0bF9mbGFncygp IHdhcm46IHBvdGVudGlhbCBzcGVjdHJlIGlzc3VlICdkcm1faW9jdGxzJyBbcl0gKGxvY2FsIGNh cCkKPiAKPiBGaXggdGhpcyBieSBzYW5pdGl6aW5nIG5yIGJlZm9yZSB1c2luZyBpdCB0byBpbmRl eCBkZXYtPmRyaXZlci0+aW9jdGxzCj4gYW5kIGRybV9pb2N0bHMuCj4gCj4gTm90aWNlIHRoYXQg Z2l2ZW4gdGhhdCBzcGVjdWxhdGlvbiB3aW5kb3dzIGFyZSBsYXJnZSwgdGhlIHBvbGljeSBpcwo+ IHRvIGtpbGwgdGhlIHNwZWN1bGF0aW9uIG9uIHRoZSBmaXJzdCBsb2FkIGFuZCBub3Qgd29ycnkg aWYgaXQgY2FuIGJlCj4gY29tcGxldGVkIHdpdGggYSBkZXBlbmRlbnQgbG9hZC9zdG9yZSBbMV0u Cj4gCj4gWzFdIGh0dHBzOi8vbWFyYy5pbmZvLz9sPWxpbnV4LWtlcm5lbCZtPTE1MjQ0OTEzMTEx NDc3OCZ3PTIKPiAKPiBDYzogc3RhYmxlQHZnZXIua2VybmVsLm9yZwo+IFNpZ25lZC1vZmYtYnk6 IEd1c3Rhdm8gQS4gUi4gU2lsdmEgPGd1c3Rhdm9AZW1iZWRkZWRvci5jb20+CgpsZ3RtIGFuZCBJ IHRoaW5rIHRoZXJlJ3Mgbm8gb3RoZXIgb2J2aW91cyBwbGFjZSB3aGVyZSB3ZSBuZWVkCmFycmF5 X2luZGV4X25vc3BlYyBpbiBkcm0gY29yZS4gQXBwbGllZCB0byBkcm0tbWlzYy1maXhlcy4KLURh bmllbAoKPiAtLS0KPiAgZHJpdmVycy9ncHUvZHJtL2RybV9pb2N0bC5jIHwgMTAgKysrKysrKyst LQo+ICAxIGZpbGUgY2hhbmdlZCwgOCBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQo+IAo+ IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2lvY3RsLmMgYi9kcml2ZXJzL2dwdS9k cm0vZHJtX2lvY3RsLmMKPiBpbmRleCA5NGJkODcyZDU2YzQuLjdlNjc0NmIyZDcwNCAxMDA2NDQK PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2lvY3RsLmMKPiArKysgYi9kcml2ZXJzL2dwdS9k cm0vZHJtX2lvY3RsLmMKPiBAQCAtMzcsNiArMzcsNyBAQAo+ICAKPiAgI2luY2x1ZGUgPGxpbnV4 L3BjaS5oPgo+ICAjaW5jbHVkZSA8bGludXgvZXhwb3J0Lmg+Cj4gKyNpbmNsdWRlIDxsaW51eC9u b3NwZWMuaD4KPiAgCj4gIC8qKgo+ICAgKiBET0M6IGdldHVuaXF1ZSBhbmQgc2V0dmVyc2lvbiBz dG9yeQo+IEBAIC04MDAsMTMgKzgwMSwxNyBAQCBsb25nIGRybV9pb2N0bChzdHJ1Y3QgZmlsZSAq ZmlscCwKPiAgCj4gIAlpZiAoaXNfZHJpdmVyX2lvY3RsKSB7Cj4gIAkJLyogZHJpdmVyIGlvY3Rs ICovCj4gLQkJaWYgKG5yIC0gRFJNX0NPTU1BTkRfQkFTRSA+PSBkZXYtPmRyaXZlci0+bnVtX2lv Y3RscykKPiArCQl1bnNpZ25lZCBpbnQgaW5kZXggPSBuciAtIERSTV9DT01NQU5EX0JBU0U7Cj4g Kwo+ICsJCWlmIChpbmRleCA+PSBkZXYtPmRyaXZlci0+bnVtX2lvY3RscykKPiAgCQkJZ290byBl cnJfaTE7Cj4gLQkJaW9jdGwgPSAmZGV2LT5kcml2ZXItPmlvY3Rsc1tuciAtIERSTV9DT01NQU5E X0JBU0VdOwo+ICsJCWluZGV4ID0gYXJyYXlfaW5kZXhfbm9zcGVjKGluZGV4LCBkZXYtPmRyaXZl ci0+bnVtX2lvY3Rscyk7Cj4gKwkJaW9jdGwgPSAmZGV2LT5kcml2ZXItPmlvY3Rsc1tpbmRleF07 Cj4gIAl9IGVsc2Ugewo+ICAJCS8qIGNvcmUgaW9jdGwgKi8KPiAgCQlpZiAobnIgPj0gRFJNX0NP UkVfSU9DVExfQ09VTlQpCj4gIAkJCWdvdG8gZXJyX2kxOwo+ICsJCW5yID0gYXJyYXlfaW5kZXhf bm9zcGVjKG5yLCBEUk1fQ09SRV9JT0NUTF9DT1VOVCk7Cj4gIAkJaW9jdGwgPSAmZHJtX2lvY3Rs c1tucl07Cj4gIAl9Cj4gIAo+IEBAIC04ODgsNiArODkzLDcgQEAgYm9vbCBkcm1faW9jdGxfZmxh Z3ModW5zaWduZWQgaW50IG5yLCB1bnNpZ25lZCBpbnQgKmZsYWdzKQo+ICAKPiAgCWlmIChuciA+ PSBEUk1fQ09SRV9JT0NUTF9DT1VOVCkKPiAgCQlyZXR1cm4gZmFsc2U7Cj4gKwluciA9IGFycmF5 X2luZGV4X25vc3BlYyhuciwgRFJNX0NPUkVfSU9DVExfQ09VTlQpOwo+ICAKPiAgCSpmbGFncyA9 IGRybV9pb2N0bHNbbnJdLmZsYWdzOwo+ICAJcmV0dXJuIHRydWU7Cj4gLS0gCj4gMi4yMC4xCj4g CgotLSAKRGFuaWVsIFZldHRlcgpTb2Z0d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRpb24K aHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRl c2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8v ZHJpLWRldmVsCg==