[PATCH 1/2] drm/amdgpu: fix amdgpu.vramlimit handling

[Pierre-Eric Pelloux-Prayer]

Without this change amdgpu_ttm_training_data_block_init tries
to allocate at the end of the real amount of RAM, which
then fails like this if amdgpu.vramlimit=XXXX is used:

   [drm:amdgpu_ttm_init [amdgpu]] *ERROR* alloc c2p_bo failed(-12)!
   [drm:amdgpu_device_init.cold [amdgpu]] *ERROR* sw_init of IP block <gmc_v10_0> failed -12
   amdgpu: amdgpu_device_ip_init failed
   amdgpu: Fatal error during GPU init

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index be0efaae79a9..952e99e6d07e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1621,9 +1621,9 @@ static void amdgpu_ttm_training_data_block_init(struct amdgpu_device *adev)
 	memset(ctx, 0, sizeof(*ctx));
 
 	ctx->c2p_train_data_offset =
-		ALIGN((adev->gmc.mc_vram_size - adev->mman.discovery_tmr_size - SZ_1M), SZ_1M);
+		ALIGN((adev->gmc.real_vram_size - adev->mman.discovery_tmr_size - SZ_1M), SZ_1M);
 	ctx->p2c_train_data_offset =
-		(adev->gmc.mc_vram_size - GDDR6_MEM_TRAINING_OFFSET);
+		(adev->gmc.real_vram_size - GDDR6_MEM_TRAINING_OFFSET);
 	ctx->train_data_size =
 		GDDR6_MEM_TRAINING_DATA_SIZE_IN_BYTES;
 

base-commit: a81bcfc756bcaa9e8bb46262f910504fa5290aab
-- 
2.36.1