gpu: nvgpu: Fix length passed to VIDMEM map

The call to __set_pd_level() for vidmem allocs had the wrong
length being passed in. This was a silent error since the subsequent
__set_pd_level() calls overwrote the bad mappings. However this
caused significantly more PDE/PTE writes than necessary since
each chunk could be mapped N times where N is the number of chunks
in an SGL.

Change-Id: Ied7247b70825dc91b9eea1c3350f4ef370ab1a52
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1537078
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/gmmu.c b/drivers/gpu/nvgpu/common/mm/gmmu.c
index 30be1b85..73dff2c3 100644
--- a/drivers/gpu/nvgpu/common/mm/gmmu.c
+++ b/drivers/gpu/nvgpu/common/mm/gmmu.c
@@ -501,7 +501,7 @@ static int __nvgpu_gmmu_update_page_table_vidmem(struct vm_gk20a *vm,
                 err = __set_pd_level(vm, &vm->pdb,
                                      0,
                                      phys_addr,
-                                     virt_addr, length,
+                                     virt_addr, chunk_length,
                                      attrs);
                 if (err)
                         break;