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| author |   Iskren Chernev <iskren.chernev@gmail.com> | 2020-12-30 17:29:43 +0200 |
|---|---|---|
| committer |   Rob Clark <robdclark@chromium.org> | 2021-01-07 09:12:53 -0800 |
| commit | 3f7759e7b7585a0bffda06d4eddc6b0b850ef6c3 (patch) | |
| tree | fbac337eaa0e99849172ec922f2233281a2f1e02 /drivers/gpu/drm/msm/adreno/adreno_device.c | |
| parent | drm/msm: Call msm_init_vram before binding the gpu (diff) | |
| download | linux-dev-3f7759e7b7585a0bffda06d4eddc6b0b850ef6c3.tar.xz linux-dev-3f7759e7b7585a0bffda06d4eddc6b0b850ef6c3.zip | |
drm/msm: Add modparam to allow vram carveout
Using the GPU with a VRAM Carveout is a security vulnerability.
Nevertheless it is sometimes required, especially when no IOMMU
implementation is available for a certain platform.
Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/adreno_device.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_device.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 87c8b033ad1a..12e75ba360f9 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -18,6 +18,10 @@ bool snapshot_debugbus = false; MODULE_PARM_DESC(snapshot_debugbus, "Include debugbus sections in GPU devcoredump (if not fused off)"); module_param_named(snapshot_debugbus, snapshot_debugbus, bool, 0600); +bool allow_vram_carveout = false; +MODULE_PARM_DESC(allow_vram_carveout, "Allow using VRAM Carveout, in place of IOMMU"); +module_param_named(allow_vram_carveout, allow_vram_carveout, bool, 0600); + static const struct adreno_info gpulist[] = { { .rev = ADRENO_REV(2, 0, 0, 0), |