From: Jiandi An <jiandi@amd.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@gmail.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
"virtio-dev@lists.oasis-open.org"
<virtio-dev@lists.oasis-open.org>, Dave Airlie <airlied@linux.ie>,
"open list:VIRTIO CORE,
NET..." <virtualization@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
"Lendacky, Thomas" <Thomas.Lendacky@amd.com>,
"Singh, Brijesh" <brijesh.singh@amd.com>
Subject: Re: [virtio-dev] [PATCH 2/2] drm/virtio: add iommu support.
Date: Wed, 19 Sep 2018 07:15:06 +0000 [thread overview]
Message-ID: <d4c25272-9df8-33d6-d310-964b17a8c80d@amd.com> (raw)
In-Reply-To: <20180919044600.utvnu5l6fvvi2qi4@sirius.home.kraxel.org>
On 09/18/2018 11:46 PM, Gerd Hoffmann wrote:
> Hi,
>
>> buffer. I tried to put a dma_sync_sg_for_device() on virtio_gpu_object obj->pages-sgl
>> before VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D is sent. This fixes the kernel console path.
>
> That should be the right place.
>
>> Once display manger is kicked off for example (sudo systemctl start lightdm.service) and
>> resource id 3 gets created from user space down, it still gives a blank black screen.
>
> Hmm. I'd suspect there is simply a code path missing. Can you send the
> patch you have?
>
> cheers,
> Gerd
>
I sent the patch. For now it does dma_sync_sg on the pages in
TRANSFER_TO_HOST_2D/3D when use_dma_api is true.
https://lore.kernel.org/lkml/20180919070931.91168-1-jiandi.an@amd.com/
- Jiandi
next prev parent reply other threads:[~2018-09-19 7:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180829122026.27012-1-kraxel@redhat.com>
2018-08-29 12:20 ` [PATCH 1/2] drm/virtio: add virtio_gpu_object_detach() function Gerd Hoffmann
2018-08-29 12:20 ` [PATCH 2/2] drm/virtio: add iommu support Gerd Hoffmann
2018-09-03 23:50 ` [virtio-dev] " Dave Airlie
2018-09-12 6:52 ` Jiandi An
2018-09-12 7:25 ` Gerd Hoffmann
2018-09-18 17:51 ` Jiandi An
2018-09-19 4:46 ` Gerd Hoffmann
2018-09-19 7:15 ` Jiandi An [this message]
2018-09-19 11:38 ` Gerd Hoffmann
2018-09-19 22:06 ` Jiandi An
2018-09-20 6:32 ` Gerd Hoffmann
2018-09-21 4:58 ` Jiandi An
2018-09-21 5:47 ` Gerd Hoffmann
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