drm/i915: Convert EFAULT into a silent SIGBUS

EFAULT will be a possible return code where backing storage is
transient, such after it is purged by madvise. As such it is to be
expected and so should not trigger a WARN inside i915_gem_fault() but be
converted silently to SIGBUS.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4054ce47a805e86d9337298da8e6ec1e3ba05230..a6c9f2e4543c7d15ba2e876844f409d81004a019 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1453,6 +1453,7 @@ out:
                ret = VM_FAULT_OOM;
                break;
        case -ENOSPC:
+       case -EFAULT:
                ret = VM_FAULT_SIGBUS;
                break;
        default: