diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_utils.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.c b/drivers/gpu/drm/i915/i915_utils.c index f9e780dee9de..29fd02bf5ea8 100644 --- a/drivers/gpu/drm/i915/i915_utils.c +++ b/drivers/gpu/drm/i915/i915_utils.c @@ -3,6 +3,8 @@ * Copyright © 2019 Intel Corporation */ +#include <linux/device.h> + #include <drm/drm_drv.h> #include "i915_drv.h" @@ -114,3 +116,12 @@ void set_timer_ms(struct timer_list *t, unsigned long timeout) /* Keep t->expires = 0 reserved to indicate a canceled timer. */ mod_timer(t, jiffies + timeout ?: 1); } + +bool i915_vtd_active(struct drm_i915_private *i915) +{ + if (device_iommu_mapped(i915->drm.dev)) + return true; + + /* Running as a guest, we assume the host is enforcing VT'd */ + return i915_run_as_guest(); +} |