>From f9d62c51e6c73f62c865b7f5b45440a2d3add4bb Mon Sep 17 00:00:00 2001
From: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
Date: Mon, 29 Sep 2008 11:00:57 +0800
Subject: [PATCH] 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@xxxxxxxxx>
---
arch/ia64/kvm/Makefile | 4 ++++
arch/ia64/kvm/kvm-ia64.c | 9 +++++++++
2 files changed, 13 insertions(+), 0 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 d3c35eb..3f80eaf 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);
--
1.5.1
Attachment:
0008-kvm-ia64-Add-intel-iommu-support-for-guests.patch
Description: 0008-kvm-ia64-Add-intel-iommu-support-for-guests.patch
