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From: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
To: Joonyoung Shim <jy0922.shim@samsung.com>,
	linux-samsung-soc@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org, m.szyprowski@samsung.com,
	djkurtz@chromium.org, robclark@freedesktop.org
Subject: Re: [PATCH 04/15] tests/exynos: disable the G2D userptr/blend test
Date: Wed, 11 Feb 2015 02:39:32 +0100	[thread overview]
Message-ID: <54DAB2D4.1070405@math.uni-bielefeld.de> (raw)
In-Reply-To: <54DAAC4F.5020906@samsung.com>

Hello Joonyoung!

Joonyoung Shim wrote:
> Hi,
> 
> On 02/03/2015 10:53 PM, Tobias Jakobi wrote:
>> The blend test uses the userptr functionality of exynos-drm, which
>> is currently not safe to use. If the kernel hasn't been build with
>> exynos-iommu support, then the blend test is going to produce (kernel)
>> memory corruption, eventually leading to a system crash.
>>
>> Disable the test for now, until the kernel code has been sanitized.
>>
>> Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
>> ---
>>  tests/exynos/exynos_fimg2d_test.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/tests/exynos/exynos_fimg2d_test.c b/tests/exynos/exynos_fimg2d_test.c
>> index aa140e5..48dfe97 100644
>> --- a/tests/exynos/exynos_fimg2d_test.c
>> +++ b/tests/exynos/exynos_fimg2d_test.c
>> @@ -788,11 +788,13 @@ int main(int argc, char **argv)
>>  
>>  	getchar();
>>  
>> +#if 0
> 
> How about add some comments about why need disable?
You mean the current patch description is not enough, or that I should
put that description also in the sourcecode?


With best wishes,
Tobias

  reply	other threads:[~2015-02-11  1:39 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-03 13:53 [libdrm] improvements to userspace exynos component Tobias Jakobi
2015-02-03 13:53 ` [PATCH 01/15] tests/exynos: fimg2d: add a checkerboard test Tobias Jakobi
2015-02-03 13:53 ` [PATCH 02/15] exynos: replace G2D_DOUBLE_TO_FIXED macro with function Tobias Jakobi
2015-02-03 13:53 ` [PATCH 03/15] tests/exynos: fix typos and change wording Tobias Jakobi
2015-02-03 13:53 ` [PATCH 04/15] tests/exynos: disable the G2D userptr/blend test Tobias Jakobi
2015-02-11  1:11   ` Joonyoung Shim
2015-02-11  1:39     ` Tobias Jakobi [this message]
2015-02-11  1:47       ` Joonyoung Shim
2015-02-03 13:53 ` [PATCH 05/15] exynos: add g2d_scale_and_blend Tobias Jakobi
2015-02-03 13:53 ` [PATCH 06/15] tests/exynos: introduce wait_for_user_input Tobias Jakobi
2015-02-03 13:53 ` [PATCH 07/15] exynos: honor the repeat mode in g2d_copy_with_scale Tobias Jakobi
2015-02-03 13:53 ` [PATCH 08/15] exynos: introduce g2d_add_base_addr helper function Tobias Jakobi
2015-02-03 13:53 ` [PATCH 09/15] exynos: use structure initialization instead of memset Tobias Jakobi
2015-02-03 13:54 ` [PATCH 10/15] tests/exynos: improve error handling Tobias Jakobi
2015-02-03 13:54 ` [PATCH 11/15] exynos: add exynos prefix to fimg2d header Tobias Jakobi
2015-02-03 13:54 ` [PATCH 12/15] exynos: add fimg2d header to common includes Tobias Jakobi
2015-02-03 13:54 ` [PATCH 13/15] exynos: fimg2d: fix comment for G2D_COEFF_MODE_GB_COLOR Tobias Jakobi
2015-02-03 13:54 ` [PATCH 14/15] exynos: fimg2d: unify register style Tobias Jakobi
2015-02-03 13:54 ` [PATCH 15/15] exynos: fimg2d: introduce G2D_OP_INTERPOLATE Tobias Jakobi
2015-02-11  1:11 ` [libdrm] improvements to userspace exynos component Joonyoung Shim

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