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* [PATCH] [PATCH] drm/amdgpu: reduce the full gpu access time in amdgpu_device_init.
@ 2025-11-07  6:57 chong li
  0 siblings, 0 replies; only message in thread
From: chong li @ 2025-11-07  6:57 UTC (permalink / raw)
  To: amd-gfx; +Cc: Emily.Deng, chong li

[Why]
function "devm_memremap_pages" in function "kgd2kfd_init_zone_device",
sometimes cost too much time.

[How]
move the function "kgd2kfd_init_zone_device" after release full gpu access(amdgpu_virt_release_full_gpu).

Signed-off-by: chong li <chongli2@amd.com>
Change-Id: I3eebd7272b8f0c85d08fec80acee67a2c9e59e52
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 1e8725abcded..9aacf8fdb38a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3314,7 +3314,6 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 
 	/* Don't init kfd if whole hive need to be reset during init */
 	if (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) {
-		kgd2kfd_init_zone_device(adev);
 		amdgpu_amdkfd_device_init(adev);
 	}
 
@@ -4929,6 +4928,11 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 
 	if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI)
 		amdgpu_xgmi_reset_on_init(adev);
+
+    /* Don't init kfd if whole hive need to be reset during init */
+    if (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI)
+		kgd2kfd_init_zone_device(adev);
+
 	/*
 	 * Place those sysfs registering after `late_init`. As some of those
 	 * operations performed in `late_init` might affect the sysfs
-- 
2.48.1


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