Re: [PATCH] drm/i915: Disable bonding on gen12+ platforms

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On 07/08/2021 06:02, Matt Roper wrote:
On Fri, Aug 06, 2021 at 08:54:59PM +0200, Daniel Vetter wrote:
On Fri, Aug 6, 2021 at 8:25 PM John Harrison <john.c.harrison@xxxxxxxxx> wrote:
On 7/28/2021 12:21, Matthew Brost wrote:
Disable bonding on gen12+ platforms aside from ones already supported by
the i915 - TGL, RKL, and ADL-S.

Does this needs adjusting for the change in ADL-P plans?

Regards,

Tvrtko


Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
---
   drivers/gpu/drm/i915/gem/i915_gem_context.c | 7 +++++++
   1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 05c3ee191710..9c3672bac0e2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -446,6 +446,13 @@ set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data)
       u16 idx, num_bonds;
       int err, n;

+     if (GRAPHICS_VER(i915) >= 12 && !IS_TIGERLAKE(i915) &&
+         !IS_ROCKETLAKE(i915) && !IS_ALDERLAKE_S(i915)) {
+             drm_dbg(&i915->drm,
+                     "Bonding on gen12+ aside from TGL, RKL, and ADL_S not allowed\n");
I would have said not supported rather than not allowed. Either way:
Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx>

Either is fine with me.

Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>


Applied to drm-intel-gt-next (with the suggested debug message wording
tweak).  Thanks for the patch and reviews.


Matt


+             return -ENODEV;
+     }
+
       if (get_user(idx, &ext->virtual_index))
               return -EFAULT;




--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch




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