diff options
| -rw-r--r-- | src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c | 4 | ||||
| -rw-r--r-- | src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c index c28e1ca373c..98d72bd9f2c 100644 --- a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c +++ b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c @@ -318,8 +318,8 @@ static bool do_winsys_init(struct amdgpu_winsys *ws, int fd) /* Set hardware information. */ ws->info.gart_size = gtt.heap_size; ws->info.vram_size = vram.heap_size; - /* TODO: the kernel reports vram/gart.max_allocation == 251 MB (bug?) */ - ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size); + /* The kernel can split large buffers, so we can do large allocations. */ + ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size) * 0.9; /* convert the shader clock from KHz to MHz */ ws->info.max_shader_clock = ws->amdinfo.max_engine_clk / 1000; ws->info.max_se = ws->amdinfo.num_shader_engines; diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c index c7ceee250b8..70f061ccc36 100644 --- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c +++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c @@ -373,7 +373,9 @@ static bool do_winsys_init(struct radeon_drm_winsys *ws) ws->info.gart_size = gem_info.gart_size; ws->info.vram_size = gem_info.vram_size; - ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size); + /* Radeon allocates all buffers as contigous, which makes large allocations + * unlikely to succeed. */ + ws->info.max_alloc_size = MAX2(ws->info.vram_size, ws->info.gart_size) * 0.7; if (ws->info.drm_minor < 40) ws->info.max_alloc_size = MIN2(ws->info.max_alloc_size, 256*1024*1024); |