diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c index 2d8c51f882d5..8c9394048f25 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gh100.c @@ -13,6 +13,9 @@ gh100_fb_sysmem_flush_page_init(struct nvkm_fb *fb) const u64 addr = fb->sysmem.flush_page_addr >> NV_PFB_NISO_FLUSH_SYSMEM_ADDR_SHIFT; struct nvkm_device *device = fb->subdev.device; + // Ensure that the address is within hardware limits + WARN_ON(fb->sysmem.flush_page_addr > DMA_BIT_MASK(52)); + nvkm_wr32(device, NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_HI, upper_32_bits(addr)); nvkm_wr32(device, NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_LO, lower_32_bits(addr)); } |