wbinvd_on_all_cpus() is only defined on x86 it seems, plus we need to include asm/smp.h here. Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx> Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c index 1adcd8e02d29..a45d0ec2c5b6 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -12,6 +12,13 @@ #include "i915_gem_object.h" #include "i915_scatterlist.h" +#if defined(CONFIG_X86) +#include <asm/smp.h> +#else +#define wbinvd_on_all_cpus() \ + pr_warn(DRIVER_NAME ": Missing cache flush in %s\n", __func__) +#endif + I915_SELFTEST_DECLARE(static bool force_different_devices;) static struct drm_i915_gem_object *dma_buf_to_obj(struct dma_buf *buf) -- 2.26.3