Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: MIT
2/* Copyright © 2025 Intel Corporation */
3
4#include <linux/device.h>
5
6#include <drm/drm_device.h>
7
8#ifdef CONFIG_X86
9#include <asm/hypervisor.h>
10#endif
11
12#include "intel_display_core.h"
13#include "intel_display_utils.h"
14
15bool intel_display_run_as_guest(struct intel_display *display)
16{
17#if IS_ENABLED(CONFIG_X86)
18 return !hypervisor_is_type(X86_HYPER_NATIVE);
19#else
20 /* Not supported yet */
21 return false;
22#endif
23}
24
25bool intel_display_vtd_active(struct intel_display *display)
26{
27 if (device_iommu_mapped(display->drm->dev))
28 return true;
29
30 /* Running as a guest, we assume the host is enforcing VT'd */
31 return intel_display_run_as_guest(display);
32}