[PATCH 4/6] drm/i915/gem: hide new uAPI behind CONFIG_BROKEN

[Pallavi Mishra]

From: Matthew Auld <matthew.auld at intel.com>

Treat it the same as the fake local-memory stuff, where it is disabled
for normal kernels, in case some random UMD is tempted to use this. Once
we have all the other bits and pieces in place, like the TTM conversion,
we can turn this on for real.

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com>
Cc: Jon Bloomfield <jon.bloomfield at intel.com>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Daniel Vetter <daniel.vetter at intel.com>
Cc: Kenneth Graunke <kenneth at whitecape.org>
Cc: Jason Ekstrand <jason at jlekstrand.net>
Cc: Dave Airlie <airlied at gmail.com>
Cc: dri-devel at lists.freedesktop.org
Cc: mesa-dev at lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210429103056.407067-9-matthew.auld@intel.com
(cherry picked from commit 0a46be95c282956a9d3229a46e33ba701c26594c)
---
 drivers/gpu/drm/i915/gem/i915_gem_create.c | 3 +++
 drivers/gpu/drm/i915/i915_query.c          | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_create.c b/drivers/gpu/drm/i915/gem/i915_gem_create.c
index f6729feae582..548ddf39d853 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_create.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_create.c
@@ -335,6 +335,9 @@ static int ext_set_placements(struct i915_user_extension __user *base,
 {
 	struct drm_i915_gem_create_ext_memory_regions ext;
 
+	if (!IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM))
+		return -ENODEV;
+
 	if (copy_from_user(&ext, base, sizeof(ext)))
 		return -EFAULT;
 
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 51b368be0fc4..8a72923fbdba 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -434,6 +434,9 @@ static int query_memregion_info(struct drm_i915_private *i915,
 	u32 total_length;
 	int ret, id, i;
 
+	if (!IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM))
+		return -ENODEV;
+
 	if (query_item->flags != 0)
 		return -EINVAL;