From: Samuel Li <samuel.li-5C7GfCeVMHo@public.gmane.org>
To: "Michel Dänzer" <michel-otUistvHUpPR7s880joybQ@public.gmane.org>,
"Alex Deucher"
<alexdeucher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "Christian König" <christian.koenig-5C7GfCeVMHo@public.gmane.org>,
"amd-gfx list"
<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Subject: Re: [PATCH 1/2] drm/amdgpu: Enable scatter gather display support
Date: Wed, 7 Mar 2018 13:18:36 -0500 [thread overview]
Message-ID: <e70cc3eb-b549-551b-7d31-6adfa3471f8d@amd.com> (raw)
In-Reply-To: <436764aa-a11b-24ba-1d81-648eda9d6150-otUistvHUpPR7s880joybQ@public.gmane.org>
I think it's not useful though. Think about that, SG display feature is intended to use as less VRAM as possible. Will someone want a display buffer sometimes VRAM, sometimes GTT?
Hardly a case to me, and I think it's a waste of effort. That also might explain no driver does that now.
Sam
On 2018-03-07 12:50 PM, Michel Dänzer wrote:
> On 2018-03-07 06:38 PM, Alex Deucher wrote:
>> On Wed, Mar 7, 2018 at 12:29 PM, Samuel Li <samuel.li@amd.com> wrote:
>>>
>>> Why so complicated? If old user space compatibility is required, just use sg_display=0.
>>
>> It will always just work in that case and we can adjust for the
>> optimal scenario by default in all cases without requiring the user to
>> set misc parameters to tune their setup that may break in the future
>> or hide bugs because a user sets it and forgets it.
>
> Right. I don't agree it's all that complicated anyway, we do this sort
> of thing all the time, it also makes our lives easier down the road.
>
>
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next prev parent reply other threads:[~2018-03-07 18:18 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-02 23:25 [PATCH 1/2] drm/amdgpu: Enable scatter gather display support Samuel Li
[not found] ` <1520033110-29964-1-git-send-email-Samuel.Li-5C7GfCeVMHo@public.gmane.org>
2018-03-03 13:41 ` Christian König
[not found] ` <3f0a85f6-ac67-cd8c-716e-1c1655d40226-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-06 16:49 ` Samuel Li
[not found] ` <c23ddc4b-c785-be3b-8321-416bb8417b6d-5C7GfCeVMHo@public.gmane.org>
2018-03-06 17:03 ` Alex Deucher
[not found] ` <CADnq5_OAnM2p2NHnOAduCd+yomFXKqKhrag+JaayZD1Ri9z_2Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-06 17:09 ` Li, Samuel
[not found] ` <BY1PR12MB05044ACBE8424866B3CCA243F5D90-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-06 17:11 ` Christian König
[not found] ` <898d3377-ee2b-a33d-dbff-b4cb692d650d-5C7GfCeVMHo@public.gmane.org>
2018-03-06 17:22 ` Li, Samuel
[not found] ` <BY1PR12MB050407EA9472CB2B6E101CE7F5D90-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-06 17:44 ` Christian König
[not found] ` <e416ff00-018b-f206-123e-90b09b4ccd9f-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-06 17:51 ` Michel Dänzer
[not found] ` <ebe01500-9fa5-e541-86c3-30ff0168e792-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-06 18:02 ` Christian König
[not found] ` <cd4659cb-f030-4938-af44-2fa1389ccdfb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-06 18:09 ` Li, Samuel
2018-03-06 18:15 ` Michel Dänzer
[not found] ` <6febc0d1-0171-3cc1-ff22-69aa4ef36036-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-06 18:23 ` Christian König
[not found] ` <12178e4c-6b48-2c3b-9970-2ca30624a5bb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-07 8:42 ` Michel Dänzer
[not found] ` <29dba5ab-f4f3-551b-ec94-2d6433e8aa21-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-07 9:47 ` Christian König
[not found] ` <1141c511-597e-c81b-6ffd-800ff846f2c1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-07 9:53 ` Michel Dänzer
[not found] ` <55efd18e-296f-fc60-9561-522650847080-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-07 10:04 ` Christian König
[not found] ` <5a228d74-0c3b-bc70-1c17-215cc2bb6a70-5C7GfCeVMHo@public.gmane.org>
2018-03-07 10:12 ` Michel Dänzer
[not found] ` <1ed86df5-1b0d-b409-bb2d-d1c70299ea99-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-07 17:29 ` Samuel Li
[not found] ` <a3fb9f28-9223-0997-6f4a-419e57a44848-5C7GfCeVMHo@public.gmane.org>
2018-03-07 17:38 ` Alex Deucher
[not found] ` <CADnq5_NykcGcvNp2q=1Ce68Wuddg6t9i18toB8ntXDFgcTcqDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-07 17:50 ` Michel Dänzer
[not found] ` <436764aa-a11b-24ba-1d81-648eda9d6150-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-07 18:18 ` Samuel Li [this message]
[not found] ` <e70cc3eb-b549-551b-7d31-6adfa3471f8d-5C7GfCeVMHo@public.gmane.org>
2018-03-07 18:27 ` Alex Deucher
[not found] ` <CADnq5_NOVK1sgOwbioVtJ8-syfKthvJ44ifS5X549ZZEEZzUUw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-07 18:53 ` Samuel Li
[not found] ` <2ec2f77f-7e7d-dc06-921a-edfa53d49c9e-5C7GfCeVMHo@public.gmane.org>
2018-03-07 19:02 ` Li, Samuel
[not found] ` <BY1PR12MB0504AFB7B6A3A55D89AE3007F5D80-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-07 20:07 ` Alex Deucher
2018-03-08 8:35 ` Michel Dänzer
[not found] ` <1b643a78-d86a-b3bf-5f92-089a43201dd5-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-08 9:07 ` Christian König
[not found] ` <06e9160c-b4d4-6c3a-ff9f-04b40b94c7a0-5C7GfCeVMHo@public.gmane.org>
2018-03-19 19:22 ` Li, Samuel
[not found] ` <BY1PR12MB0504A300C476CC31C59BFE97F5D40-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 19:27 ` Christian König
[not found] ` <2c995c37-0d0b-8fde-0118-57d7a62630ef-5C7GfCeVMHo@public.gmane.org>
2018-03-19 19:39 ` Marek Olšák
[not found] ` <CAAxE2A5kq2oZtJRm2df1fjtb_p1m2_nvCmzv9y8mbO-GS8cGrw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-19 19:41 ` Christian König
2018-03-19 19:42 ` Li, Samuel
[not found] ` <BY1PR12MB0504183ED35A54559D22E041F5D40-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 19:44 ` Christian König
[not found] ` <f25ebe1d-0b19-e972-5eba-84570e625456-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-19 19:50 ` Li, Samuel
[not found] ` <BY1PR12MB05044A2A50F2580904C8AFB5F5D40-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 19:54 ` Deucher, Alexander
[not found] ` <BN6PR12MB18099E7295CB0301EF536924F7D40-/b2+HYfkarSEx6ez0IUAagdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 19:58 ` Li, Samuel
[not found] ` <BY1PR12MB05042F8034B375BAB507EB03F5D40-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 20:02 ` Christian König
2018-03-19 20:13 ` Deucher, Alexander
[not found] ` <BN6PR12MB180952A68A8AF256197D1177F7D40-/b2+HYfkarSEx6ez0IUAagdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 20:15 ` Deucher, Alexander
[not found] ` <BN6PR12MB1809A2A1591C19CC6E0C952FF7D40-/b2+HYfkarSEx6ez0IUAagdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 20:26 ` Marek Olšák
[not found] ` <CAAxE2A4V0=1w_aybBq0dXc3w+D=eJR-dY7Tq=7g3rnj94OY7XQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-19 20:29 ` Li, Samuel
[not found] ` <BY1PR12MB050483D06AA7D7B08247B1D0F5D40-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-19 21:12 ` Alex Deucher
[not found] ` <CADnq5_O0p30CC0JAnqvrrspXapdN5ZpXGBChGmt+14ekmPHkQw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-19 23:01 ` Marek Olšák
[not found] ` <CAAxE2A4fiM5KjfxOSTTT3Soew8S-EGE7OVWBh-7565+rahMaOg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-20 13:55 ` Christian König
[not found] ` <13996c5e-dc4c-5a9a-b6c3-7fe6bb63ec5d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-20 14:51 ` Marek Olšák
[not found] ` <CAAxE2A7ffe2fkOQG0mFpPfP4uRKZ1BVTKWQ3Q+FhLWQnYU4nww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-20 18:32 ` Christian König
[not found] ` <f7bce36e-d9c6-dc13-6b1f-0e2bf91aaff0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-20 20:04 ` Deucher, Alexander
[not found] ` <DM5PR12MB18205326885F0857CEC4FAA6F7AB0-2J9CzHegvk8qWyLXlBb1HgdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-20 20:16 ` Christian König
2018-03-20 20:50 ` Li, Samuel
[not found] ` <7bbc4bc8-1b44-efc3-44b7-47ebcb4b9c76-5C7GfCeVMHo@public.gmane.org>
2018-03-20 20:38 ` Li, Samuel
[not found] ` <BY1PR12MB0504EA3793147F7A133CCC8FF5AB0-PicGAnIBOoZIlHzfMOeg3gdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-03-21 8:07 ` Christian König
2018-03-21 5:08 ` Marek Olšák
[not found] ` <CAAxE2A4gcwdGiApoh=sa-SMPtMpm6M2+LmvafhVVnW=kntPPKw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-21 8:13 ` Christian König
[not found] ` <f1171a12-3092-6690-d6ae-c5e9869bce96-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-03-21 13:57 ` Marek Olšák
[not found] ` <CAAxE2A6xdScLAcuu3SpdnsJi-qJFr16BDxgYLvimFg1o8cNmpg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-21 14:07 ` Christian König
[not found] ` <d2786617-d81f-e448-3cba-6f7dfeb521dc-5C7GfCeVMHo@public.gmane.org>
2018-03-21 15:08 ` Li, Samuel
2018-03-21 18:04 ` Marek Olšák
[not found] ` <CAAxE2A5d_iuT1dq3=KQav7JLuAUi38pJveEHsHMs7XsLJRoEYQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-21 18:15 ` Christian König
[not found] ` <4bc75e1a-ea91-6962-8a41-fd2b118c9cbb-5C7GfCeVMHo@public.gmane.org>
2018-03-21 18:23 ` Marek Olšák
[not found] ` <CAAxE2A7+18WdkiOOSD0E3PLed4nH2Bo3qGw85dAxD8AWpUkYCg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-21 18:30 ` Christian König
2018-03-19 20:53 ` Alex Deucher
[not found] ` <CADnq5_Pq3KMU2MgSo6toDwM1rYgLKRKcTK+V3yzYEyOz9-oVVw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-03-19 20:54 ` Marek Olšák
2018-03-05 10:17 ` Michel Dänzer
[not found] ` <67ca0059-9cde-d92f-3127-dc832c2cba98-otUistvHUpPR7s880joybQ@public.gmane.org>
2018-03-05 15:31 ` Samuel Li
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