From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: Felix.Kuehling@amd.com, Guchun.Chen@amd.com,
amd-gfx@lists.freedesktop.org
Subject: [PATCH] drm/amdgpu: make sure to only process the remaining VM range
Date: Mon, 15 Mar 2021 13:58:21 +0100 [thread overview]
Message-ID: <20210315125821.80688-1-christian.koenig@amd.com> (raw)
We should only map the remaining size here and not the whole segment.
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 3af0a018a728 ("drm/amdgpu: new resource cursor")
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 318eeea577b5..ad1698bd6b24 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1646,7 +1646,8 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
while (cursor.remaining) {
uint64_t tmp, num_entries, addr;
- num_entries = cursor.size >> AMDGPU_GPU_PAGE_SHIFT;
+ num_entries = min(cursor.size, cursor.remaining)
+ >> AMDGPU_GPU_PAGE_SHIFT;
if (pages_addr) {
bool contiguous = true;
--
2.25.1
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