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authorXiantao Zhang <xiantao.zhang@intel.com>2008-10-08 08:29:33 +0800
committerAvi Kivity <avi@redhat.com>2008-10-15 14:25:39 +0200
commit2381ad241d0bea1253a37f314b270848067640bb (patch)
treef722e3da63c8f26ef7309653848ab7cea02e08cb
parentb010eb5103cfbe12ae6f08a4cdb3a748bf78c410 (diff)
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KVM: ia64: Add intel iommu support for guests.
With intel iommu hardware, we can assign devices to kvm/ia64 guests. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
-rw-r--r--arch/ia64/kvm/Makefile4
-rw-r--r--arch/ia64/kvm/kvm-ia64.c9
-rw-r--r--include/linux/kvm.h2
3 files changed, 14 insertions, 1 deletions
diff --git a/arch/ia64/kvm/Makefile b/arch/ia64/kvm/Makefile
index 3b1a1c1..cf37f8f 100644
--- a/arch/ia64/kvm/Makefile
+++ b/arch/ia64/kvm/Makefile
@@ -46,6 +46,10 @@ EXTRA_AFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
coalesced_mmio.o irq_comm.o)
+ifeq ($(CONFIG_DMAR),y)
+common-objs += $(addprefix ../../../virt/kvm/, vtd.o)
+endif
+
kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
obj-$(CONFIG_KVM) += kvm.o
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 3df82f3..c0699f0 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -31,6 +31,7 @@
#include <linux/bitops.h>
#include <linux/hrtimer.h>
#include <linux/uaccess.h>
+#include <linux/intel-iommu.h>
#include <asm/pgtable.h>
#include <asm/gcc_intrin.h>
@@ -187,6 +188,9 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_COALESCED_MMIO:
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
break;
+ case KVM_CAP_IOMMU:
+ r = intel_iommu_found();
+ break;
default:
r = 0;
}
@@ -773,6 +777,7 @@ static void kvm_init_vm(struct kvm *kvm)
*/
kvm_build_io_pmt(kvm);
+ INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
}
struct kvm *kvm_arch_create_vm(void)
@@ -1336,6 +1341,10 @@ static void kvm_release_vm_pages(struct kvm *kvm)
void kvm_arch_destroy_vm(struct kvm *kvm)
{
+ kvm_iommu_unmap_guest(kvm);
+#ifdef KVM_CAP_DEVICE_ASSIGNMENT
+ kvm_free_all_assigned_devices(kvm);
+#endif
kfree(kvm->arch.vioapic);
kvm_release_vm_pages(kvm);
kvm_free_physmem(kvm);
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 9acf34a..797fcd7 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -383,7 +383,7 @@ struct kvm_trace_rec {
#define KVM_CAP_MP_STATE 14
#define KVM_CAP_COALESCED_MMIO 15
#define KVM_CAP_SYNC_MMU 16 /* Changes to host mmap are reflected in guest */
-#ifdef CONFIG_X86
+#if defined(CONFIG_X86)||defined(CONFIG_IA64)
#define KVM_CAP_DEVICE_ASSIGNMENT 17
#endif
#define KVM_CAP_IOMMU 18