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authorJike Song <jike.song@intel.com>2016-11-09 15:30:59 +0300
committerZhenyu Wang <zhenyuw@linux.intel.com>2016-11-10 10:45:39 +0300
commitf30437c5e7bfa9d8acc18058040efb4f474907c3 (patch)
treedf834136de4e5d4565e732f122a68e3cfb495d89 /drivers/gpu/drm/i915/gvt/gvt.c
parent9ec1e66b8084f24d41046bd9711fbd7ec6e3850f (diff)
downloadlinux-f30437c5e7bfa9d8acc18058040efb4f474907c3.tar.xz
drm/i915/gvt: add KVMGT support
KVMGT is the MPT implementation based on VFIO/KVM. It provides a kvmgt_mpt ops to gvt for vGPU access mediation, e.g. to mediate and emulate the MMIO accesses, to inject interrupts to vGPU user, to intercept the GTT writing and replace it with DMA-able address, to write-protect guest PPGTT table for shadowing synchronization, etc. This patch provides the MPT implementation for GVT, not yet functional due to theabsence of mdev. It's built as kvmgt.ko, depends on vfio.ko, kvm.ko and mdev.ko, and being required by i915.ko. To not introduce hard dependency in i915.ko, we used indirect symbol reference. But that means users have to include kvmgt.ko into init ramdisk if their i915.ko is included. Signed-off-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Xiaoguang Chen <xiaoguang.chen@intel.com> Signed-off-by: Jike Song <jike.song@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/gvt.c')
-rw-r--r--drivers/gpu/drm/i915/gvt/gvt.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c
index 7af265ac8d74..398877c3d2fd 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.c
+++ b/drivers/gpu/drm/i915/gvt/gvt.c
@@ -84,10 +84,12 @@ int intel_gvt_init_host(void)
symbol_get(xengt_mpt), "xengt");
intel_gvt_host.hypervisor_type = INTEL_GVT_HYPERVISOR_XEN;
} else {
+#if IS_ENABLED(CONFIG_DRM_I915_GVT_KVMGT)
/* not in Xen. Try KVMGT */
intel_gvt_host.mpt = try_then_request_module(
- symbol_get(kvmgt_mpt), "kvm");
+ symbol_get(kvmgt_mpt), "kvmgt");
intel_gvt_host.hypervisor_type = INTEL_GVT_HYPERVISOR_KVM;
+#endif
}
/* Fail to load MPT modules - bail out */