[Bug 107545] radeon - ring 0 stalled - GPU lockup - SI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107545

--- Comment #11 from Julien Isorce <julien.isorce at gmail.com> ---
I found time to go a bit further. Now I understand this radeon_cs_parser_init
function a bit more 

If I comment the AGP condition here
https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/radeon/radeon_cs.c?h=amd-staging-drm-next#n340
so that kdata is used then I can verify that the kdata contains the same data
as user space.

But when writing to parser->ib.ptr here
https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/radeon/radeon_cs.c?h=amd-staging-drm-next#n648
then comparing parser->ib.ptr's data and kdata shows the same difference as
pointed in comment #5.

Could it be an issue with pcie (though is works with admgpu, well in fact it
uses kdata on amdgpu) ? Is there anyway I can force a commit/flush just after
it writes to parser->ib.ptr as a test even if it is slower ? thx!

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20180824/3bcef9a4/attachment.html>