drm/i915: fix i915 running as dom0 under Xen

Commit 920cf4194954ec ("drm/i915: Introduce an internal allocator for
disposable private objects") introduced a regression for the kernel
running as Xen dom0: when switching to graphics mode a GPU HANG
occurred.

Reason seems to be a missing adaption similar to that done in
commit 7453c549f5f648 ("swiotlb: Export swiotlb_max_segment to users")
to i915_gem_object_get_pages_internal().

So limit the maximum page order to be used according to the maximum
swiotlb segment size instead to the complete swiotlb size.

Fixes: 920cf4194954 ("drm/i915: Introduce an internal allocator for disposable private objects")
Signed-off-by: Juergen Gross <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Cc: Chris Wilson <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: [email protected]
Cc: <[email protected]> # v4.10-rc1+
Reviewed-by: Tvrtko Ursulin <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>

0 files changed, 0 insertions, 0 deletions