Hello, I'm new to DRM development and ran into something in the Panfrost (but also Panthor) driver I'm curious about.
In drivers/gpu/drm/panfrost/panfrost_gem.c, there's this line: obj->base.map_wc = !pfdev->coherent; >From what I can tell, this means when the CPU isn't coherent, it uses >write-combining mapping. I'm wondering why this approach instead of something like the dma_sync_single_* functions at the appropriate places? Thanks, Gregory
