From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752718AbbCJCuL (ORCPT ); Mon, 9 Mar 2015 22:50:11 -0400 Received: from mailout1.samsung.com ([203.254.224.24]:53150 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751579AbbCJCuF convert rfc822-to-8bit (ORCPT ); Mon, 9 Mar 2015 22:50:05 -0400 X-AuditID: cbfee690-f79ab6d0000046f7-7d-54fe5bda6b29 MIME-version: 1.0 Content-type: text/plain; charset=UTF-8 Content-transfer-encoding: 8BIT Message-id: <54FE5BDA.5030707@samsung.com> Date: Tue, 10 Mar 2015 11:50:02 +0900 From: Inki Dae User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130803 Thunderbird/17.0.8 To: Javier Martinez Canillas Cc: Marek Szyprowski , Kevin Hilman , Kukjin Kim , Olof Johansson , Krzysztof Kozlowski , Andreas Faerber , linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, tyler.baker@linaro.org, Andrzej Hajda , Inki Dae , Gustavo Padovan Subject: Re: [PATCH 1/1] ARM: exynos_defconfig: Disable IOMMU support References: <1424173109-30347-1-git-send-email-javier.martinez@collabora.co.uk> <7hioehu8cn.fsf@linaro.org> <54F6C746.606@samsung.com> <54F6DD79.9070009@collabora.co.uk> <54F9AC76.1000305@samsung.com> <54F9C29C.7050608@collabora.co.uk> In-reply-to: <54F9C29C.7050608@collabora.co.uk> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrKIsWRmVeSWpSXmKPExsWyRsSkRPdW9L8QgzNrrS1urTvHatG8qdji addFZotPq1vZLY7+LrB4/cLQov/xa2aLp5sfM1lc3jWHzWLG+X1MFmuP3GW3OHX9M5vFxx33 WBx4Pf4+v87isXPWXXaPTas62TzuXNvD5nHlRBOrR9+WVYwem09Xe3zeJBfAEcVlk5Kak1mW WqRvl8CV8fdzccFd/oqPU3qZGhiP8XQxcnJICJhIrL/ygA3CFpO4cG89kM3FISSwlFHi3Pwf bDBF3y5PY4dITGeUeLNkEliCV0BQ4sfkeywgNrOAusSkeYuYIWwRiTVTdrBD2NoSyxa+ZoZo fsUocXXPdCaIZi2J7QchNrAIqEp8mDkTrIENyJ644j5YXFQgTOLFq11gQ0UE7CRurH4INohZ 4BCzxIXlN8EahAVcJa5c+sUCseEjo8SdDxMYuxg5ODgF9CU6ttiDxCUEJnJIzLl5lglim4DE t8mHWEBqJARkJTYdYIZ4U1Li4IobLBMYxWcheW4WkudmIXluFpLnFjCyrGIUTS1ILihOSi8y 0StOzC0uzUvXS87P3cQIjP3T/55N2MF474D1IUYBDkYlHt4Vhv9ChFgTy4orcw8xmgJdNJFZ SjQ5H5hg8kriDY3NjCxMTUyNjcwtzZTEeV9L/QwWEkhPLEnNTk0tSC2KLyrNSS0+xMjEwSnV wLju++2y/zvyf1Q+zi145na7vsjFhJ/RdftG08iDXNteya+/ze1io5FeeIjz+KLCBSlKDxY/ +yi/ZUaegPjeq7+NpMJmn319YluAxebljZOOfltpMi/QpaZh6qI8KcUX51MZH60N+yWXxP+a YYLf3/9/H9o27j6/vm/G0s60x9VP/Zt2XHoQdXKBEktxRqKhFnNRcSIAiPUsGfgCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprGKsWRmVeSWpSXmKPExsVy+t9jQd1b0f9CDF53GlncWneO1aJ5U7HF 066LzBafVreyWxz9XWDx+oWhRf/j18wWTzc/ZrK4vGsOm8WM8/uYLNYeuctucer6ZzaLjzvu sTjwevx9fp3FY+esu+wem1Z1snncubaHzePKiSZWj74tqxg9Np+u9vi8SS6AI6qB0SYjNTEl tUghNS85PyUzL91WyTs43jne1MzAUNfQ0sJcSSEvMTfVVsnFJ0DXLTMH6GAlhbLEnFKgUEBi cbGSvh2mCaEhbroWMI0Rur4hQXA9RgZoIGENY8am1x3sBcf5K+b3b2dqYNzA08XIySEhYCLx 7fI0dghbTOLCvfVsXYxcHEIC0xkl3iyZxAaS4BUQlPgx+R5LFyMHB7OAvMSRS9kgYWYBdYlJ 8xYxQ9S/YpS4umc6E0S9lsT2gz/AelkEVCU+zJwJtoANyJ644j5YXFQgTOLFq13MILaIgJ3E jdUPwQYxCxxilriw/CZYg7CAq8SVS79YIDZ8ZJS482ECI8gVnAL6Eh1b7CcwCsxCct8shPtm IblvASPzKkbR1ILkguKk9FwjveLE3OLSvHS95PzcTYzgNPFMegfjqgaLQ4wCHIxKPLwMJv9C hFgTy4orcw8xSnAwK4nwSmgBhXhTEiurUovy44tKc1KLDzGaAn03kVlKNDkfmMLySuINjU3M jCyNzA0tjIzNlcR5lezbQoQE0hNLUrNTUwtSi2D6mDg4pRoYZx9k2c+x6/OnpzvL+7+sEnVf OOXtVp8p5yZ/Lb3wV9joIiub0OKeB99Eeet2XZy51/np1W2VtxjehLxde3zFlJ/f+W49qQ3t jhH6eLj0aGPP8+litYInF62fEXLnYqyvy+69bQ+vbot5/9m5uXvDiWlCHIE++X1bnHzZPDnz G55VhHya+eHPjHwlluKMREMt5qLiRABFLrGRKQMAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2015년 03월 07일 00:07, Javier Martinez Canillas wrote: > Hello Inki, > > On 03/06/2015 02:32 PM, Inki Dae wrote: >>> >>> Another interesting data point is that the error in next-20150303 for >>> these 2 boards was the NULL pointer dereference in exynos_plane_destroy >>> that I got with 4.0-rc2 (when IOMMU is disabled) in Snow and Peach Pit. >> >> I think the NULL pointer dereference issue may be fixed with below patch >> I merged to exynos-drm-fixes just a while ago, >> https://lkml.org/lkml/2015/2/17/434 >> >> Could you test it with this patch again? >> > > Thanks, I tested v4.0-rc2 + the patch to disable IOMMU + the patch you > mentioned and the crash does not happen anymore in Peach Pit and Snow. > >>> >>> Another thing that may be useful to detect these issues early is to have >>> exynos-drm-next be pulled by linux-next since otherwise the integration >>> is not tested until the changes are picked by the DRM maintainer. >>> > > I know that I may sound like a broken record but could you please make > sure that your tree is included in linux-next? Got it. I got several requests before. I have created a new branch - exynos-drm/for-next - based on top of drm-next, which would have same patch set as existing exynos-drm-next. I will request Stephen Rothwell to merge remote-tracking branch, 'exynos-drm/for-next'. Thanks, Inki Dae > > That way the fix could be tested by all the machines that are testing > linux-next daily since right now Exynos will still be broken until you > send a pull request to the DRM maintainer. > > So it would be nice to get the changes as soon as possible into -next > to avoid a recurrent error to mask other possible new issues. > > Best regards, > Javier > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >