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drm/amdkfd: Fix a bug when calculating save_area_used_size 

workgroup context data writes from m->cp_hqd_cntl_stack_size, so we
should deduct it when calculating the used size.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yong Zhao 2019-11-08 23:03:29 -05:00 committed by Alex Deucher
parent 681a9167dd
commit bc05b0ec15
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
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@ -302,7 +302,8 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
*ctl_stack_used_size = m->cp_hqd_cntl_stack_size -
m->cp_hqd_cntl_stack_offset;
*save_area_used_size = m->cp_hqd_wg_state_offset;
*save_area_used_size = m->cp_hqd_wg_state_offset -
m->cp_hqd_cntl_stack_size;
if (copy_to_user(ctl_stack, mqd_ctl_stack, m->cp_hqd_cntl_stack_size))
return -EFAULT;