Re: [PATCH] drm/amdgpu: don't attach the tlb fence for SI

[Greg KH <gregkh@linuxfoundation.org>]

On Mon, Dec 15, 2025 at 09:15:17AM +0100, Hans de Goede wrote:
> Hi greg,
> 
> On 15-Dec-25 9:12 AM, Greg KH wrote:
> > On Sun, Dec 14, 2025 at 10:53:36AM +0100, Hans de Goede wrote:
> >> From: Alex Deucher <alexander.deucher@amd.com>
> >>
> >> commit eb296c09805ee37dd4ea520a7fb3ec157c31090f upstream.
> >>
> >> SI hardware doesn't support pasids, user mode queues, or
> >> KIQ/MES so there is no need for this.  Doing so results in
> >> a segfault as these callbacks are non-existent for SI.
> >>
> >> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4744
> >> Fixes: f3854e04b708 ("drm/amdgpu: attach tlb fence to the PTs update")
> >> Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
> >> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> >> Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
> >> ---
> >>  drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 +++-
> >>  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > What kernel tree(s) should this go to?
> 
> This fixes a regression introduced in at least 6.17.y (6.17.11)
> and 6.18.y (6.18.1). So it should at least go to those branches.

But that commit is in 6.19-rc1, not anything older.

> If any other branches also have gotten commit f3854e04b708
> backported then those should get this too.

I don't see that commit in any stable tree, what am I missing?

confused,

greg k-h