I just sent out patch below yesterday. swapping unpopulated bo is useless
indeed.
[RFC PATCH 2/2] drm/ttm: skip swapout when ttm has no backend page.
On HP Fury G7 Workstations, graphics output is re-routed from Intel GFX
to discrete GFX after S3. This is not desirable, because userspace will
treat connected display as a new one, losing display settings.
The expected behavior is to let discrete GFX drives all external
displays.
The platform
Am 20.05.21 um 05:15 schrieb xinhui pan:
We have met memory corruption due to unexcepted swapout/swapin.
swapout function create one swap storage which is filled with zero. And
set ttm->page_flags as TTM_PAGE_FLAG_SWAPPED. But because userptr BO ttm
has no backend page at that time, no real
Use the drm_bridge_connector_init() helper to create a drm_connector for
each output, instead of relying on the bridge drivers doing so. Attach
the bridges with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to instruct
them not to create a connector.
Signed-off-by: Laurent Pinchart
Reviewed-by: Jacopo
Replace the manual panel handling with usage of the DRM panel bridge
helper. This simplifies the driver, and brings support for
DRM_BRIDGE_ATTACH_NO_CONNECTOR as an added bonus.
Signed-off-by: Laurent Pinchart
---
drivers/gpu/drm/rcar-du/rcar_lvds.c | 120 +++-
1 file
Report the DT output port number in dw_hdmi_plat_data to connect to the
next bridge in the dw-hdmi driver.
Signed-off-by: Laurent Pinchart
---
drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
On all platforms except i.MX and Rockchip, the dw-hdmi DT bindings
require a video output port connected to an HDMI sink (most likely an
HDMI connector, in rare cases another bridges converting HDMI to another
protocol). For those platforms, retrieve the next bridge and attach it
from the dw-hdmi
Hello,
This patch series converts the R-Car DU driver to use the DRM bridge
connector helper drm_bridge_connector_init().
The bulk of the v1 series was converting the adv7511, simple-bridge and
dw-hdmi drivers to make connector creation optional (through the
DRM_BRIDGE_ATTACH_NO_CONNECTOR flag),
On Thu, May 20, 2021 at 2:50 AM Florian Fainelli wrote:
>
>
>
> On 5/17/2021 11:42 PM, Claire Chang wrote:
> > Add a new function, swiotlb_init_io_tlb_mem, for the io_tlb_mem struct
> > initialization to make the code reusable.
> >
> > Note that we now also call set_memory_decrypted in
Uff, that looks very hardware specific to me.
As far as I can see you can also implement completely inside the backend
by starting a timer on enable_signaling, don't you?
Christian.
Am 19.05.21 um 20:38 schrieb Rob Clark:
From: Rob Clark
Add a way to hint to the fence signaler that a
On Thu, May 20, 2021 at 2:54 AM Florian Fainelli wrote:
>
>
>
> On 5/17/2021 11:42 PM, Claire Chang wrote:
> > Add the initialization function to create restricted DMA pools from
> > matching reserved-memory nodes.
> >
> > Signed-off-by: Claire Chang
> > ---
> > include/linux/device.h | 4 +++
swapout function create one swap storage which is filled with zero. And set
ttm->page_flags as TTM_PAGE_FLAG_SWAPPED. Just because ttm has no backend page
this time, no real data is swapout to this swap storage.
That's the fundamental problem. A TT object which isn't populated
shouldn't be
The problem is that ttm_bo_type_sg doesn't allocate a page array for the
TT object.
Christian.
Am 20.05.21 um 04:58 schrieb Pan, Xinhui:
[AMD Official Use Only]
I am not sure if we can create a ttm_bo_type_sg bo for userptr. But I have
another idea now. we can use flag
I find null pointer bug when I debug the kernel of loongson in mips，I think the function fb_set_suspend() adding pointer judgment will more friendly.[ 101.409101] PM: hibernation entry [ 101.526365] PM: Syncing filesystems ... [ 101.543008] PM: done.[ 101.545287] Freezing user
I find null pointer bug when I debug the kernel of loongson，I think the function fb_set_suspend() add pointer judgment will more friendly.[ 101.409101] PM: hibernation entry [ 101.526365] PM: Syncing filesystems ... [ 101.543008] PM: done.[ 101.545287] Freezing user space
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