From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: "kraxel@redhat.com" <kraxel@redhat.com>, Dave Airlie <airlied@gmail.com>
Cc: "airlied@linux.ie" <airlied@linux.ie>,
"puck.chen@hisilicon.com" <puck.chen@hisilicon.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"z.liuxinliang@hisilicon.com" <z.liuxinliang@hisilicon.com>,
"hdegoede@redhat.com" <hdegoede@redhat.com>,
"kong.kongxinwei@hisilicon.com" <kong.kongxinwei@hisilicon.com>,
"Huang, Ray" <Ray.Huang@amd.com>,
"zourongrong@gmail.com" <zourongrong@gmail.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
"Zhang, Jerry" <Jerry.Zhang@amd.com>,
"Koenig, Christian" <Christian.Koenig@amd.com>
Subject: Re: [PATCH 00/15] Share TTM code among framebuffer drivers
Date: Tue, 9 Apr 2019 13:55:28 +0200 [thread overview]
Message-ID: <2295e026-0da9-cec2-7822-8d21e67097af@gmail.com> (raw)
In-Reply-To: <20190409082953.vkgflrsebbgk4e7b@sirius.home.kraxel.org>
Am 09.04.19 um 10:29 schrieb kraxel@redhat.com:
> Hi,
>
>>> The qemu stdvga (bochs driver) has 16 MB vram by default and can be
>>> configured to have up to 256 MB. Plenty of room even for multiple 4k
>>> framebuffers if needed. So for the bochs driver all the ttm bo
>>> migration logic is not needed, it could just store everything in vram.
>> To clarify I assume you mean it doesn't need the migrate each bo
>> logic, but it still needs the when VRAM fills up migrate stuff logic.
> I think even the "when vram fills up" logic isn't that important. The
> driver has no acceleration so there is nothing to store beside dumb
> framebuffers, and the vram size can easily be increased if needed.
Yeah, cause in this particular case it is not even real VRAM.
In this case VRAM is backed by system memory which in turn is stolen
from the host system isn't it?
So just have enough for a framebuffer and don't place anything else in
there.
Regards,
Christian.
>
> cheers,
> Gerd
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
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next prev parent reply other threads:[~2019-04-09 11:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 9:21 [PATCH 00/15] Share TTM code among framebuffer drivers Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 01/15] drm: Add |struct drm_gem_ttm_object| and helpers Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 02/15] drm: Add |struct drm_gem_ttm_object| callbacks for |struct ttm_bo_driver| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 03/15] drm: Add |struct drm_gem_ttm_object| callbacks for |struct drm_driver| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 04/15] drm: Add drm_gem_ttm_fill_create_dumb() to create dumb buffers Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 05/15] drm: Add Simple TTM, a memory manager for dedicated VRAM Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 06/15] drm/ast: Convert AST driver to |struct drm_gem_ttm_object| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 07/15] drm/ast: Convert AST driver to Simple TTM Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 08/15] drm/bochs: Convert Bochs driver to |struct drm_gem_ttm_object| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 09/15] drm/bochs: Convert Bochs driver to Simple TTM Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 10/15] drm/mgag200: Convert mgag200 driver to |struct drm_gem_ttm_object| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 11/15] drm/mgag200: Convert mgag200 driver to Simple TTM Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 12/15] drm/vboxvideo: Convert vboxvideo driver to |struct drm_gem_ttm_object| Thomas Zimmermann
2019-04-09 7:09 ` Hans de Goede
2019-04-08 9:21 ` [PATCH 13/15] drm/vboxvideo: Convert vboxvideo driver to Simple TTM Thomas Zimmermann
2019-04-09 7:09 ` Hans de Goede
2019-04-09 7:37 ` Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 14/15] drm/hisilicon: Convert hibmc-drm driver to |struct drm_gem_ttm_object| Thomas Zimmermann
2019-04-08 9:21 ` [PATCH 15/15] drm/hisilicon: Convert hibmc-drm driver to Simple TTM Thomas Zimmermann
2019-04-08 11:10 ` [PATCH 00/15] Share TTM code among framebuffer drivers Koenig, Christian
2019-04-08 11:59 ` Thomas Zimmermann
2019-04-09 7:12 ` kraxel
2019-04-09 7:42 ` Dave Airlie
2019-04-09 8:29 ` kraxel
2019-04-09 11:55 ` Christian König [this message]
2019-04-09 7:50 ` Thomas Zimmermann
2019-04-15 15:54 ` Daniel Vetter
2019-04-15 15:57 ` Daniel Vetter
2019-04-15 16:21 ` Thomas Zimmermann
2019-04-15 19:17 ` Daniel Vetter
2019-04-16 10:05 ` Koenig, Christian
2019-04-16 11:03 ` Daniel Vetter
2019-04-16 11:10 ` Koenig, Christian
2019-04-09 13:39 ` Koenig, Christian
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