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drm/amdkfd: fix redundant MQD iterations in GFX v12.1

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The init_mqd_v12_1 function and its sub-call update_mqd_v12_1 both independently
iterate over XCC-specific MQDs. This nested iteration is redundant and can cause
MQDs in different queues to be overwritten. This patch removes the duplicate
loop logic to prevent queue corruption.

Fixes: 01bbc4a4b9 ("drm/amdkfd: Add MQD manager for GFX 12.1.0")
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Sierra 2026-04-07 17:22:44 -05:00 committed by Alex Deucher
parent e773ce17b0
commit 9315a1e2bd
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v12_1.c
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@ -32,6 +32,10 @@
#include "amdgpu_amdkfd.h"
#include "kfd_device_queue_manager.h"
static void update_mqd(struct mqd_manager *mm, void *mqd,
struct queue_properties *q,
struct mqd_update_info *minfo);
static inline struct v12_1_compute_mqd *get_mqd(void *mqd)
{
return (struct v12_1_compute_mqd *)mqd;
@ -215,7 +219,7 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
*mqd = m;
if (gart_addr)
*gart_addr = addr;
mm->update_mqd(mm, m, q, NULL);
update_mqd(mm, m, q, NULL);
}
static int load_mqd(struct mqd_manager *mm, void *mqd,