From: Chuanxiao Dong <chuanxiao.dong@intel.com>
Date: Thu, 9 Feb 2017 03:38:38 +0000 (+0800)
Subject: drm/i915/gvt: enable IOMMU for gvt
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=811a4cf273afc6f651e0ef3d5400084bf0aeb75e;p=openwrt%2Fstaging%2Fblogic.git

drm/i915/gvt: enable IOMMU for gvt

gvt driver has a check which doesn't allow to use gvt when host
gpu iommu is enabled. This check can be removed after enable the
iommu support in gvt

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
---

diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c
index 9a636a2c2077..3b9d59e457ba 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.c
+++ b/drivers/gpu/drm/i915/gvt/gvt.c
@@ -75,13 +75,6 @@ int intel_gvt_init_host(void)
 	if (xen_domain() && !xen_initial_domain())
 		return -ENODEV;
 
-#ifdef CONFIG_INTEL_IOMMU
-	if (intel_iommu_gfx_mapped) {
-		gvt_err("Hardware IOMMU compatibility not yet supported, try to boot with intel_iommu=igfx_off\n");
-		return -ENODEV;
-	}
-#endif
-
 	/* Try to load MPT modules for hypervisors */
 	if (xen_initial_domain()) {
 		/* In Xen dom0 */