From 6c6f105c90ee427ebe6fe4b15321a239b5596755 Mon Sep 17 00:00:00 2001
From: Yong Zhao <Yong.Zhao@amd.com>
Date: Fri, 8 Nov 2019 23:03:29 -0500
Subject: drm/amdkfd: Fix a bug when calculating save_area_used_size
Git-commit: bc05b0ec150983ba3b3c1a1c6b5eeb6c2918c94a
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
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>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index d3380c5bdbde..be27ff01cdb8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -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;
--
2.28.0