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| author | Christian König <christian.koenig@amd.com> | 2020-09-02 12:07:14 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-03 21:48:04 +0300 |
| commit | ee354ff1c7c210fb41952ebf0a820fb714eae7b1 (patch) | |
| tree | 620273b700b81cfed517986412b6aa7965541d04 /drivers/gpu/drm/amd | |
| parent | 1625951a3a7bdd776d38f2cdd35f72a795e82df0 (diff) | |
| download | linux-ee354ff1c7c210fb41952ebf0a820fb714eae7b1.tar.xz | |
drm/amdgpu: fix max_entries calculation v4
Calculate the correct value for max_entries or we might run after the
page_address array.
v2: Xinhui pointed out we don't need the shift
v3: use local copy of start and simplify some calculation
v4: fix the case that we map less VA range than BO size
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 1e691e244487 drm/amdgpu: stop allocating dummy GTT nodes
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 620472a70460..37221b99ca96 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1693,13 +1693,13 @@ static int amdgpu_vm_bo_split_mapping(struct amdgpu_device *adev, uint64_t max_entries; uint64_t addr, last; + max_entries = mapping->last - start + 1; if (nodes) { addr = nodes->start << PAGE_SHIFT; - max_entries = (nodes->size - pfn) * - AMDGPU_GPU_PAGES_IN_CPU_PAGE; + max_entries = min((nodes->size - pfn) * + AMDGPU_GPU_PAGES_IN_CPU_PAGE, max_entries); } else { addr = 0; - max_entries = S64_MAX; } if (pages_addr) { @@ -1729,7 +1729,7 @@ static int amdgpu_vm_bo_split_mapping(struct amdgpu_device *adev, addr += pfn << PAGE_SHIFT; } - last = min((uint64_t)mapping->last, start + max_entries - 1); + last = start + max_entries - 1; r = amdgpu_vm_bo_update_mapping(adev, vm, false, false, resv, start, last, flags, addr, dma_addr, fence); |