drm/i915: Silently fallback to 4k scratch

If we fail to allocate a 64k hugepage for scratch, we try again with a
normal 4k page (with some loss of efficiency at runtime). As we handle
this gracefully, we do not need a noisy allocation failure warning.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010111005.13625-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 4c60578..ca7fd34 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -538,7 +538,7 @@ setup_scratch_page(struct i915_address_space *vm, gfp_t gfp)
        if (i915_vm_is_48bit(vm) &&
            HAS_PAGE_SIZES(vm->i915, I915_GTT_PAGE_SIZE_64K)) {
                order = get_order(I915_GTT_PAGE_SIZE_64K);
-               page = alloc_pages(gfp | __GFP_ZERO, order);
+               page = alloc_pages(gfp | __GFP_ZERO | __GFP_NOWARN, order);
                if (page) {
                        addr = dma_map_page(vm->dma, page, 0,
                                            I915_GTT_PAGE_SIZE_64K,