Patch "drm/amdgpu: Assign correct bits for SDMA HDP flush" has been added to the 6.8-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amdgpu: Assign correct bits for SDMA HDP flush

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-assign-correct-bits-for-sdma-hdp-flush.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From aebd3eb9d3ae017e6260043f6bcace2f5ef60694 Mon Sep 17 00:00:00 2001
From: Lijo Lazar <lijo.lazar@xxxxxxx>
Date: Wed, 10 Apr 2024 19:30:46 +0530
Subject: drm/amdgpu: Assign correct bits for SDMA HDP flush

From: Lijo Lazar <lijo.lazar@xxxxxxx>

commit aebd3eb9d3ae017e6260043f6bcace2f5ef60694 upstream.

HDP Flush request bit can be kept unique per AID, and doesn't need to be
unique SOC-wide. Assign only bits 10-13 for SDMA v4.4.2.

Signed-off-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -366,7 +366,8 @@ static void sdma_v4_4_2_ring_emit_hdp_fl
 	u32 ref_and_mask = 0;
 	const struct nbio_hdp_flush_reg *nbio_hf_reg = adev->nbio.hdp_flush_reg;
 
-	ref_and_mask = nbio_hf_reg->ref_and_mask_sdma0 << ring->me;
+	ref_and_mask = nbio_hf_reg->ref_and_mask_sdma0
+		       << (ring->me % adev->sdma.num_inst_per_aid);
 
 	sdma_v4_4_2_wait_reg_mem(ring, 0, 1,
 			       adev->nbio.funcs->get_hdp_flush_done_offset(adev),


Patches currently in stable-queue which might be from lijo.lazar@xxxxxxx are

queue-6.8/drm-amdgpu-assign-correct-bits-for-sdma-hdp-flush.patch
queue-6.8/drm-amdgpu-pm-remove-gpu_od-if-it-s-an-empty-directory.patch




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