diff options
Diffstat (limited to 'sys/amd64/vmm/vmm.c')
| -rw-r--r-- | sys/amd64/vmm/vmm.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c index cabc271..c2b5f61 100644 --- a/sys/amd64/vmm/vmm.c +++ b/sys/amd64/vmm/vmm.c @@ -228,11 +228,6 @@ SYSCTL_INT(_hw_vmm, OID_AUTO, trace_guest_exceptions, CTLFLAG_RDTUN, &trace_guest_exceptions, 0, "Trap into hypervisor on all guest exceptions and reflect them back"); -static int vmm_force_iommu = 0; -TUNABLE_INT("hw.vmm.force_iommu", &vmm_force_iommu); -SYSCTL_INT(_hw_vmm, OID_AUTO, force_iommu, CTLFLAG_RDTUN, &vmm_force_iommu, 0, - "Force use of I/O MMU even if no passthrough devices were found."); - static void vm_free_memmap(struct vm *vm, int ident); static bool sysmem_mapping(struct vm *vm, struct mem_map *mm); static void vcpu_notify_event_locked(struct vcpu *vcpu, bool lapic_intr); @@ -362,8 +357,6 @@ vmm_handler(module_t mod, int what, void *arg) switch (what) { case MOD_LOAD: vmmdev_init(); - if (vmm_force_iommu || ppt_avail_devices() > 0) - iommu_init(); error = vmm_init(); if (error == 0) vmm_initialized = 1; @@ -400,9 +393,6 @@ static moduledata_t vmm_kmod = { /* * vmm initialization has the following dependencies: * - * - iommu initialization must happen after the pci passthru driver has had - * a chance to attach to any passthru devices (after SI_SUB_CONFIGURE). - * * - VT-x initialization requires smp_rendezvous() and therefore must happen * after SMP is fully functional (after SI_SUB_SMP). */ @@ -897,6 +887,8 @@ vm_assign_pptdev(struct vm *vm, int bus, int slot, int func) ("vm_assign_pptdev: iommu must be NULL")); maxaddr = sysmem_maxaddr(vm); vm->iommu = iommu_create_domain(maxaddr); + if (vm->iommu == NULL) + return (ENXIO); vm_iommu_map(vm); } |
