diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-03-15 17:27:53 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-03-15 17:27:53 -0400 |
| commit | 374200b154ae48e8f011fb74dab21f80459f9e47 (patch) | |
| tree | d801c957febe2b211b23486e26d139d636535034 /drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | |
| parent | 0fc8011f89feb8b2c3008583b777d097e1974660 (diff) | |
| download | talos-op-linux-374200b154ae48e8f011fb74dab21f80459f9e47.tar.gz talos-op-linux-374200b154ae48e8f011fb74dab21f80459f9e47.zip | |
drm/amdkfd: Add module option for testing large-BAR functionality
Simulate large-BAR system by exporting only visible memory. This
limits the amount of available VRAM to the size of the BAR, but
enables CPU access to VRAM.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index ec0b2c0284ec..cd679cf1fd30 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1151,6 +1151,11 @@ bool kfd_dev_is_large_bar(struct kfd_dev *dev) { struct kfd_local_mem_info mem_info; + if (debug_largebar) { + pr_debug("Simulate large-bar allocation on non large-bar machine\n"); + return true; + } + if (dev->device_info->needs_iommu_device) return false; |
