From: Chris Wilson Date: Mon, 11 Jan 2016 09:16:14 +0000 (+0000) Subject: drm/i915: Add an optional selection from i915 of CONFIG_MMU_NOTIFIER X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=755412e29c7745368316d890dde0398f58c3cf72;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Add an optional selection from i915 of CONFIG_MMU_NOTIFIER 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 Cc: Tvrtko Ursulin Reviewed-by: Tvrtko Ursulin Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1452503961-14837-3-git-send-email-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 4c59793c4ccb..20a5d0455e19 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -45,3 +45,14 @@ 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".