If you initiate a read that is out of the VRAM address space return ENXIO instead of 0.
Reads that begin below that point will read upto the VRAM limit as before. Signed-off-by: Tom St Denis <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 522f773203c8..399209495265 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1468,6 +1468,9 @@ static ssize_t amdgpu_ttm_vram_read(struct file *f, char __user *buf, if (size & 0x3 || *pos & 0x3) return -EINVAL; + if (*pos >= adev->mc.mc_vram_size) + return -ENXIO; + while (size) { unsigned long flags; uint32_t value; -- 2.12.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
