userptr requires mmu-notifier for full unprivileged support. Most systems have mmu-notifier support already enabled as a requirement for virtualisation support, but we should make the option for i915 to take advantage of mmu-notifiers explicit (and enable by default so that regular userspace can take advantage of passing client memory to the GPU.) Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index fcd77b27514d..b979295aab82 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -48,3 +48,14 @@ config DRM_I915_PRELIMINARY_HW_SUPPORT option changes the default for that module option. If in doubt, say "N". + +config DRM_I915_USERPTR + bool "Always enable userptr support" + depends on DRM_I915 + select MMU_NOTIFIER + default y + help + This option selects CONFIG_MMU_NOTIFIER if it isn't already + selected to enabled full userptr support. + + If in doubt, say "Y". -- 2.7.0.rc3 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
