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KVM: change KVM to use IOMMU API 

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2008-12-03 14:43:34 +01:00
parent 1aaf118352
commit 19de40a847
9 changed files with 33 additions and 34 deletions
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2
arch/ia64/include/asm/kvm_host.h
View File

@ -467,7 +467,7 @@ struct kvm_arch {
struct kvm_sal_data rdv_sal_data;
struct list_head assigned_dev_head;
struct dmar_domain *intel_iommu_domain;
struct iommu_domain *iommu_domain;
struct hlist_head irq_ack_notifier_list;
unsigned long irq_sources_bitmap;

2
arch/ia64/kvm/Makefile
View File

@ -51,7 +51,7 @@ 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)
ifeq ($(CONFIG_IOMMU_API),y)
common-objs += $(addprefix ../../../virt/kvm/, iommu.o)
endif

3
arch/ia64/kvm/kvm-ia64.c
View File

@ -31,6 +31,7 @@
#include <linux/bitops.h>
#include <linux/hrtimer.h>
#include <linux/uaccess.h>
#include <linux/iommu.h>
#include <linux/intel-iommu.h>
#include <asm/pgtable.h>
@ -188,7 +189,7 @@ int kvm_dev_ioctl_check_extension(long ext)
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
break;
case KVM_CAP_IOMMU:
r = intel_iommu_found();
r = iommu_found();
break;
default:
r = 0;

2
arch/x86/include/asm/kvm_host.h
View File

@ -360,7 +360,7 @@ struct kvm_arch{
struct list_head active_mmu_pages;
struct list_head assigned_dev_head;
struct list_head oos_global_pages;
struct dmar_domain *intel_iommu_domain;
struct iommu_domain *iommu_domain;
struct kvm_pic *vpic;
struct kvm_ioapic *vioapic;
struct kvm_pit *vpit;

2
arch/x86/kvm/Makefile
View File

@ -7,7 +7,7 @@ common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
ifeq ($(CONFIG_KVM_TRACE),y)
common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
endif
ifeq ($(CONFIG_DMAR),y)
ifeq ($(CONFIG_IOMMU_API),y)
common-objs += $(addprefix ../../../virt/kvm/, iommu.o)
endif

3
arch/x86/kvm/x86.c
View File

@ -34,6 +34,7 @@
#include <linux/module.h>
#include <linux/mman.h>
#include <linux/highmem.h>
#include <linux/iommu.h>
#include <linux/intel-iommu.h>
#include <asm/uaccess.h>
@ -989,7 +990,7 @@ int kvm_dev_ioctl_check_extension(long ext)
r = !tdp_enabled;
break;
case KVM_CAP_IOMMU:
r = intel_iommu_found();
r = iommu_found();
break;
default:
r = 0;

6
include/linux/kvm_host.h
View File

@ -328,7 +328,7 @@ void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
int kvm_request_irq_source_id(struct kvm *kvm);
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
#ifdef CONFIG_DMAR
#ifdef CONFIG_IOMMU_API
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
unsigned long npages);
int kvm_iommu_map_guest(struct kvm *kvm);
@ -337,7 +337,7 @@ int kvm_assign_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel *assigned_dev);
int kvm_deassign_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel *assigned_dev);
#else /* CONFIG_DMAR */
#else /* CONFIG_IOMMU_API */
static inline int kvm_iommu_map_pages(struct kvm *kvm,
gfn_t base_gfn,
unsigned long npages)
@ -366,7 +366,7 @@ static inline int kvm_deassign_device(struct kvm *kvm,
{
return 0;
}
#endif /* CONFIG_DMAR */
#endif /* CONFIG_IOMMU_API */
static inline void kvm_guest_enter(void)
{

45
virt/kvm/iommu.c
View File

@ -25,6 +25,7 @@
#include <linux/kvm_host.h>
#include <linux/pci.h>
#include <linux/dmar.h>
#include <linux/iommu.h>
#include <linux/intel-iommu.h>
static int kvm_iommu_unmap_memslots(struct kvm *kvm);
@ -37,7 +38,7 @@ int kvm_iommu_map_pages(struct kvm *kvm,
gfn_t gfn = base_gfn;
pfn_t pfn;
int i, r = 0;
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
struct iommu_domain *domain = kvm->arch.iommu_domain;
/* check if iommu exists and in use */
if (!domain)
@ -45,16 +46,15 @@ int kvm_iommu_map_pages(struct kvm *kvm,
for (i = 0; i < npages; i++) {
/* check if already mapped */
if (intel_iommu_iova_to_phys(domain,
gfn_to_gpa(gfn)))
if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn)))
continue;
pfn = gfn_to_pfn(kvm, gfn);
r = intel_iommu_map_address(domain,
gfn_to_gpa(gfn),
pfn_to_hpa(pfn),
PAGE_SIZE,
DMA_PTE_READ | DMA_PTE_WRITE);
r = iommu_map_range(domain,
gfn_to_gpa(gfn),
pfn_to_hpa(pfn),
PAGE_SIZE,
IOMMU_READ | IOMMU_WRITE);
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%lx\n", pfn);
@ -88,7 +88,7 @@ int kvm_assign_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel *assigned_dev)
{
struct pci_dev *pdev = NULL;
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
struct iommu_domain *domain = kvm->arch.iommu_domain;
int r;
/* check if iommu exists and in use */
@ -99,7 +99,7 @@ int kvm_assign_device(struct kvm *kvm,
if (pdev == NULL)
return -ENODEV;
r = intel_iommu_attach_device(domain, pdev);
r = iommu_attach_device(domain, &pdev->dev);
if (r) {
printk(KERN_ERR "assign device %x:%x.%x failed",
pdev->bus->number,
@ -119,7 +119,7 @@ int kvm_assign_device(struct kvm *kvm,
int kvm_deassign_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel *assigned_dev)
{
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
struct iommu_domain *domain = kvm->arch.iommu_domain;
struct pci_dev *pdev = NULL;
/* check if iommu exists and in use */
@ -130,7 +130,7 @@ int kvm_deassign_device(struct kvm *kvm,
if (pdev == NULL)
return -ENODEV;
intel_iommu_detach_device(domain, pdev);
iommu_detach_device(domain, &pdev->dev);
printk(KERN_DEBUG "deassign device: host bdf = %x:%x:%x\n",
assigned_dev->host_busnr,
@ -144,13 +144,13 @@ int kvm_iommu_map_guest(struct kvm *kvm)
{
int r;
if (!intel_iommu_found()) {
printk(KERN_ERR "%s: intel iommu not found\n", __func__);
if (!iommu_found()) {
printk(KERN_ERR "%s: iommu not found\n", __func__);
return -ENODEV;
}
kvm->arch.intel_iommu_domain = intel_iommu_alloc_domain();
if (!kvm->arch.intel_iommu_domain)
kvm->arch.iommu_domain = iommu_domain_alloc();
if (!kvm->arch.iommu_domain)
return -ENOMEM;
r = kvm_iommu_map_memslots(kvm);
@ -169,7 +169,7 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
{
gfn_t gfn = base_gfn;
pfn_t pfn;
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
struct iommu_domain *domain = kvm->arch.iommu_domain;
unsigned long i;
u64 phys;
@ -178,16 +178,13 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
return;
for (i = 0; i < npages; i++) {
phys = intel_iommu_iova_to_phys(domain,
gfn_to_gpa(gfn));
phys = iommu_iova_to_phys(domain, gfn_to_gpa(gfn));
pfn = phys >> PAGE_SHIFT;
kvm_release_pfn_clean(pfn);
gfn++;
}
intel_iommu_unmap_address(domain,
gfn_to_gpa(base_gfn),
PAGE_SIZE * npages);
iommu_unmap_range(domain, gfn_to_gpa(base_gfn), PAGE_SIZE * npages);
}
static int kvm_iommu_unmap_memslots(struct kvm *kvm)
@ -205,13 +202,13 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm)
int kvm_iommu_unmap_guest(struct kvm *kvm)
{
struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
struct iommu_domain *domain = kvm->arch.iommu_domain;
/* check if iommu exists and in use */
if (!domain)
return 0;
kvm_iommu_unmap_memslots(kvm);
intel_iommu_free_domain(domain);
iommu_domain_free(domain);
return 0;
}

2
virt/kvm/kvm_main.c
View File

@ -504,7 +504,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
list_add(&match->list, &kvm->arch.assigned_dev_head);
if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU) {
if (!kvm->arch.intel_iommu_domain) {
if (!kvm->arch.iommu_domain) {
r = kvm_iommu_map_guest(kvm);
if (r)
goto out_list_del;