[PATCH 10/34] drm/i915/gvt: merge struct kvmgt_vdev into struct intel_vgpu

From: Christoph Hellwig
Date: Mon Apr 11 2022 - 10:16:11 EST

Move towards having only a single structure for the per-VGPU state.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/gpu/drm/i915/gvt/gvt.h | 31 ++-
drivers/gpu/drm/i915/gvt/hypercall.h | 1 -
drivers/gpu/drm/i915/gvt/kvmgt.c | 288 ++++++++++-----------------
drivers/gpu/drm/i915/gvt/mpt.h | 16 --
drivers/gpu/drm/i915/gvt/vgpu.c | 8 +-
5 files changed, 128 insertions(+), 216 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 97150a1297ebb..628dd686c03d5 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -207,21 +207,36 @@ struct intel_vgpu {

struct dentry *debugfs;

- /* Hypervisor-specific device state. */
- void *vdev;
-
struct list_head dmabuf_obj_list_head;
struct mutex dmabuf_lock;
struct idr object_idr;
struct intel_vgpu_vblank_timer vblank_timer;

u32 scan_nonprivbb;
-};

-static inline void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
-{
- return vgpu->vdev;
-}
+ struct mdev_device *mdev;
+ struct vfio_region *region;
+ int num_regions;
+ struct eventfd_ctx *intx_trigger;
+ struct eventfd_ctx *msi_trigger;
+
+ /*
+ * Two caches are used to avoid mapping duplicated pages (eg.
+ * scratch pages). This help to reduce dma setup overhead.
+ */
+ struct rb_root gfn_cache;
+ struct rb_root dma_addr_cache;
+ unsigned long nr_cache_entries;
+ struct mutex cache_lock;
+
+ struct notifier_block iommu_notifier;
+ struct notifier_block group_notifier;
+ struct kvm *kvm;
+ struct work_struct release_work;
+ atomic_t released;
+ struct vfio_device *vfio_device;
+ struct vfio_group *vfio_group;
+};

/* validating GM healthy status*/
#define vgpu_is_vm_unhealthy(ret_val) \
diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index 27890a5e2d828..eacee6f41f9c7 100644
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -44,7 +44,6 @@ struct device;
struct intel_gvt_mpt {
int (*host_init)(struct device *dev, void *gvt);
void (*host_exit)(struct device *dev, void *gvt);
- int (*attach_vgpu)(void *vgpu, unsigned long *handle);
void (*detach_vgpu)(void *vgpu);
int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
int (*enable_page_track)(unsigned long handle, u64 gfn);
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index f7b8ce87bc330..1c2b949d8e01f 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -112,37 +112,6 @@ struct gvt_dma {
struct kref ref;
};

-struct kvmgt_vdev {
- struct intel_vgpu *vgpu;
- struct mdev_device *mdev;
- struct vfio_region *region;
- int num_regions;
- struct eventfd_ctx *intx_trigger;
- struct eventfd_ctx *msi_trigger;
-
- /*
- * Two caches are used to avoid mapping duplicated pages (eg.
- * scratch pages). This help to reduce dma setup overhead.
- */
- struct rb_root gfn_cache;
- struct rb_root dma_addr_cache;
- unsigned long nr_cache_entries;
- struct mutex cache_lock;
-
- struct notifier_block iommu_notifier;
- struct notifier_block group_notifier;
- struct kvm *kvm;
- struct work_struct release_work;
- atomic_t released;
- struct vfio_device *vfio_device;
- struct vfio_group *vfio_group;
-};
-
-static inline struct kvmgt_vdev *kvmgt_vdev(struct intel_vgpu *vgpu)
-{
- return intel_vgpu_vdev(vgpu);
-}
-
static inline bool handle_valid(unsigned long handle)
{
return !!(handle & ~0xff);
@@ -269,7 +238,6 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long size)
{
struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
int total_pages;
int npage;
int ret;
@@ -279,7 +247,7 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
for (npage = 0; npage < total_pages; npage++) {
unsigned long cur_gfn = gfn + npage;

- ret = vfio_group_unpin_pages(vdev->vfio_group, &cur_gfn, 1);
+ ret = vfio_group_unpin_pages(vgpu->vfio_group, &cur_gfn, 1);
drm_WARN_ON(&i915->drm, ret != 1);
}
}
@@ -288,7 +256,6 @@ static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long size, struct page **page)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned long base_pfn = 0;
int total_pages;
int npage;
@@ -303,7 +270,7 @@ static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long cur_gfn = gfn + npage;
unsigned long pfn;

- ret = vfio_group_pin_pages(vdev->vfio_group, &cur_gfn, 1,
+ ret = vfio_group_pin_pages(vgpu->vfio_group, &cur_gfn, 1,
IOMMU_READ | IOMMU_WRITE, &pfn);
if (ret != 1) {
gvt_vgpu_err("vfio_pin_pages failed for gfn 0x%lx, ret %d\n",
@@ -370,7 +337,7 @@ static void gvt_dma_unmap_page(struct intel_vgpu *vgpu, unsigned long gfn,
static struct gvt_dma *__gvt_cache_find_dma_addr(struct intel_vgpu *vgpu,
dma_addr_t dma_addr)
{
- struct rb_node *node = kvmgt_vdev(vgpu)->dma_addr_cache.rb_node;
+ struct rb_node *node = vgpu->dma_addr_cache.rb_node;
struct gvt_dma *itr;

while (node) {
@@ -388,7 +355,7 @@ static struct gvt_dma *__gvt_cache_find_dma_addr(struct intel_vgpu *vgpu,

static struct gvt_dma *__gvt_cache_find_gfn(struct intel_vgpu *vgpu, gfn_t gfn)
{
- struct rb_node *node = kvmgt_vdev(vgpu)->gfn_cache.rb_node;
+ struct rb_node *node = vgpu->gfn_cache.rb_node;
struct gvt_dma *itr;

while (node) {
@@ -409,7 +376,6 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
{
struct gvt_dma *new, *itr;
struct rb_node **link, *parent = NULL;
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);

new = kzalloc(sizeof(struct gvt_dma), GFP_KERNEL);
if (!new)
@@ -422,7 +388,7 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
kref_init(&new->ref);

/* gfn_cache maps gfn to struct gvt_dma. */
- link = &vdev->gfn_cache.rb_node;
+ link = &vgpu->gfn_cache.rb_node;
while (*link) {
parent = *link;
itr = rb_entry(parent, struct gvt_dma, gfn_node);
@@ -433,11 +399,11 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
link = &parent->rb_right;
}
rb_link_node(&new->gfn_node, parent, link);
- rb_insert_color(&new->gfn_node, &vdev->gfn_cache);
+ rb_insert_color(&new->gfn_node, &vgpu->gfn_cache);

/* dma_addr_cache maps dma addr to struct gvt_dma. */
parent = NULL;
- link = &vdev->dma_addr_cache.rb_node;
+ link = &vgpu->dma_addr_cache.rb_node;
while (*link) {
parent = *link;
itr = rb_entry(parent, struct gvt_dma, dma_addr_node);
@@ -448,51 +414,46 @@ static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn,
link = &parent->rb_right;
}
rb_link_node(&new->dma_addr_node, parent, link);
- rb_insert_color(&new->dma_addr_node, &vdev->dma_addr_cache);
+ rb_insert_color(&new->dma_addr_node, &vgpu->dma_addr_cache);

- vdev->nr_cache_entries++;
+ vgpu->nr_cache_entries++;
return 0;
}

static void __gvt_cache_remove_entry(struct intel_vgpu *vgpu,
struct gvt_dma *entry)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
-
- rb_erase(&entry->gfn_node, &vdev->gfn_cache);
- rb_erase(&entry->dma_addr_node, &vdev->dma_addr_cache);
+ rb_erase(&entry->gfn_node, &vgpu->gfn_cache);
+ rb_erase(&entry->dma_addr_node, &vgpu->dma_addr_cache);
kfree(entry);
- vdev->nr_cache_entries--;
+ vgpu->nr_cache_entries--;
}

static void gvt_cache_destroy(struct intel_vgpu *vgpu)
{
struct gvt_dma *dma;
struct rb_node *node = NULL;
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);

for (;;) {
- mutex_lock(&vdev->cache_lock);
- node = rb_first(&vdev->gfn_cache);
+ mutex_lock(&vgpu->cache_lock);
+ node = rb_first(&vgpu->gfn_cache);
if (!node) {
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
break;
}
dma = rb_entry(node, struct gvt_dma, gfn_node);
gvt_dma_unmap_page(vgpu, dma->gfn, dma->dma_addr, dma->size);
__gvt_cache_remove_entry(vgpu, dma);
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
}
}

static void gvt_cache_init(struct intel_vgpu *vgpu)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
-
- vdev->gfn_cache = RB_ROOT;
- vdev->dma_addr_cache = RB_ROOT;
- vdev->nr_cache_entries = 0;
- mutex_init(&vdev->cache_lock);
+ vgpu->gfn_cache = RB_ROOT;
+ vgpu->dma_addr_cache = RB_ROOT;
+ vgpu->nr_cache_entries = 0;
+ mutex_init(&vgpu->cache_lock);
}

static void kvmgt_protect_table_init(struct kvmgt_guest_info *info)
@@ -566,18 +527,17 @@ static void kvmgt_protect_table_del(struct kvmgt_guest_info *info,
static size_t intel_vgpu_reg_rw_opregion(struct intel_vgpu *vgpu, char *buf,
size_t count, loff_t *ppos, bool iswrite)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned int i = VFIO_PCI_OFFSET_TO_INDEX(*ppos) -
VFIO_PCI_NUM_REGIONS;
- void *base = vdev->region[i].data;
+ void *base = vgpu->region[i].data;
loff_t pos = *ppos & VFIO_PCI_OFFSET_MASK;


- if (pos >= vdev->region[i].size || iswrite) {
+ if (pos >= vgpu->region[i].size || iswrite) {
gvt_vgpu_err("invalid op or offset for Intel vgpu OpRegion\n");
return -EINVAL;
}
- count = min(count, (size_t)(vdev->region[i].size - pos));
+ count = min(count, (size_t)(vgpu->region[i].size - pos));
memcpy(buf, base + pos, count);

return count;
@@ -670,8 +630,7 @@ static size_t intel_vgpu_reg_rw_edid(struct intel_vgpu *vgpu, char *buf,
int ret;
unsigned int i = VFIO_PCI_OFFSET_TO_INDEX(*ppos) -
VFIO_PCI_NUM_REGIONS;
- struct vfio_edid_region *region =
- (struct vfio_edid_region *)kvmgt_vdev(vgpu)->region[i].data;
+ struct vfio_edid_region *region = vgpu->region[i].data;
loff_t pos = *ppos & VFIO_PCI_OFFSET_MASK;

if (pos < region->vfio_edid_regs.edid_offset) {
@@ -703,34 +662,32 @@ static int intel_vgpu_register_reg(struct intel_vgpu *vgpu,
const struct intel_vgpu_regops *ops,
size_t size, u32 flags, void *data)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
struct vfio_region *region;

- region = krealloc(vdev->region,
- (vdev->num_regions + 1) * sizeof(*region),
+ region = krealloc(vgpu->region,
+ (vgpu->num_regions + 1) * sizeof(*region),
GFP_KERNEL);
if (!region)
return -ENOMEM;

- vdev->region = region;
- vdev->region[vdev->num_regions].type = type;
- vdev->region[vdev->num_regions].subtype = subtype;
- vdev->region[vdev->num_regions].ops = ops;
- vdev->region[vdev->num_regions].size = size;
- vdev->region[vdev->num_regions].flags = flags;
- vdev->region[vdev->num_regions].data = data;
- vdev->num_regions++;
+ vgpu->region = region;
+ vgpu->region[vgpu->num_regions].type = type;
+ vgpu->region[vgpu->num_regions].subtype = subtype;
+ vgpu->region[vgpu->num_regions].ops = ops;
+ vgpu->region[vgpu->num_regions].size = size;
+ vgpu->region[vgpu->num_regions].flags = flags;
+ vgpu->region[vgpu->num_regions].data = data;
+ vgpu->num_regions++;
return 0;
}

static int kvmgt_get_vfio_device(void *p_vgpu)
{
struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);

- vdev->vfio_device = vfio_device_get_from_dev(
- mdev_dev(vdev->mdev));
- if (!vdev->vfio_device) {
+ vgpu->vfio_device = vfio_device_get_from_dev(
+ mdev_dev(vgpu->mdev));
+ if (!vgpu->vfio_device) {
gvt_vgpu_err("failed to get vfio device\n");
return -ENODEV;
}
@@ -796,14 +753,14 @@ static int kvmgt_set_edid(void *p_vgpu, int port_num)
return ret;
}

-static void kvmgt_put_vfio_device(void *vgpu)
+static void kvmgt_put_vfio_device(void *data)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev((struct intel_vgpu *)vgpu);
+ struct intel_vgpu *vgpu = data;

- if (WARN_ON(!vdev->vfio_device))
+ if (WARN_ON(!vgpu->vfio_device))
return;

- vfio_device_put(vdev->vfio_device);
+ vfio_device_put(vgpu->vfio_device);
}

static int intel_vgpu_create(struct mdev_device *mdev)
@@ -830,9 +787,9 @@ static int intel_vgpu_create(struct mdev_device *mdev)
goto out;
}

- INIT_WORK(&kvmgt_vdev(vgpu)->release_work, intel_vgpu_release_work);
+ INIT_WORK(&vgpu->release_work, intel_vgpu_release_work);

- kvmgt_vdev(vgpu)->mdev = mdev;
+ vgpu->mdev = mdev;
mdev_set_drvdata(mdev, vgpu);

gvt_dbg_core("intel_vgpu_create succeeded for mdev: %s\n",
@@ -857,10 +814,8 @@ static int intel_vgpu_remove(struct mdev_device *mdev)
static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
unsigned long action, void *data)
{
- struct kvmgt_vdev *vdev = container_of(nb,
- struct kvmgt_vdev,
- iommu_notifier);
- struct intel_vgpu *vgpu = vdev->vgpu;
+ struct intel_vgpu *vgpu =
+ container_of(nb, struct intel_vgpu, iommu_notifier);

if (action == VFIO_IOMMU_NOTIFY_DMA_UNMAP) {
struct vfio_iommu_type1_dma_unmap *unmap = data;
@@ -870,7 +825,7 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
iov_pfn = unmap->iova >> PAGE_SHIFT;
end_iov_pfn = iov_pfn + unmap->size / PAGE_SIZE;

- mutex_lock(&vdev->cache_lock);
+ mutex_lock(&vgpu->cache_lock);
for (; iov_pfn < end_iov_pfn; iov_pfn++) {
entry = __gvt_cache_find_gfn(vgpu, iov_pfn);
if (!entry)
@@ -880,7 +835,7 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
entry->size);
__gvt_cache_remove_entry(vgpu, entry);
}
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
}

return NOTIFY_OK;
@@ -889,16 +844,15 @@ static int intel_vgpu_iommu_notifier(struct notifier_block *nb,
static int intel_vgpu_group_notifier(struct notifier_block *nb,
unsigned long action, void *data)
{
- struct kvmgt_vdev *vdev = container_of(nb,
- struct kvmgt_vdev,
- group_notifier);
+ struct intel_vgpu *vgpu =
+ container_of(nb, struct intel_vgpu, group_notifier);

/* the only action we care about */
if (action == VFIO_GROUP_NOTIFY_SET_KVM) {
- vdev->kvm = data;
+ vgpu->kvm = data;

if (!data)
- schedule_work(&vdev->release_work);
+ schedule_work(&vgpu->release_work);
}

return NOTIFY_OK;
@@ -907,17 +861,16 @@ static int intel_vgpu_group_notifier(struct notifier_block *nb,
static int intel_vgpu_open_device(struct mdev_device *mdev)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned long events;
int ret;
struct vfio_group *vfio_group;

- vdev->iommu_notifier.notifier_call = intel_vgpu_iommu_notifier;
- vdev->group_notifier.notifier_call = intel_vgpu_group_notifier;
+ vgpu->iommu_notifier.notifier_call = intel_vgpu_iommu_notifier;
+ vgpu->group_notifier.notifier_call = intel_vgpu_group_notifier;

events = VFIO_IOMMU_NOTIFY_DMA_UNMAP;
ret = vfio_register_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY, &events,
- &vdev->iommu_notifier);
+ &vgpu->iommu_notifier);
if (ret != 0) {
gvt_vgpu_err("vfio_register_notifier for iommu failed: %d\n",
ret);
@@ -926,7 +879,7 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)

events = VFIO_GROUP_NOTIFY_SET_KVM;
ret = vfio_register_notifier(mdev_dev(mdev), VFIO_GROUP_NOTIFY, &events,
- &vdev->group_notifier);
+ &vgpu->group_notifier);
if (ret != 0) {
gvt_vgpu_err("vfio_register_notifier for group failed: %d\n",
ret);
@@ -939,7 +892,7 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)
gvt_vgpu_err("vfio_group_get_external_user_from_dev failed\n");
goto undo_register;
}
- vdev->vfio_group = vfio_group;
+ vgpu->vfio_group = vfio_group;

/* Take a module reference as mdev core doesn't take
* a reference for vendor driver.
@@ -955,39 +908,37 @@ static int intel_vgpu_open_device(struct mdev_device *mdev)

intel_gvt_activate_vgpu(vgpu);

- atomic_set(&vdev->released, 0);
+ atomic_set(&vgpu->released, 0);
return ret;

undo_group:
- vfio_group_put_external_user(vdev->vfio_group);
- vdev->vfio_group = NULL;
+ vfio_group_put_external_user(vgpu->vfio_group);
+ vgpu->vfio_group = NULL;

undo_register:
vfio_unregister_notifier(mdev_dev(mdev), VFIO_GROUP_NOTIFY,
- &vdev->group_notifier);
+ &vgpu->group_notifier);

undo_iommu:
vfio_unregister_notifier(mdev_dev(mdev), VFIO_IOMMU_NOTIFY,
- &vdev->iommu_notifier);
+ &vgpu->iommu_notifier);
out:
return ret;
}

static void intel_vgpu_release_msi_eventfd_ctx(struct intel_vgpu *vgpu)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
struct eventfd_ctx *trigger;

- trigger = vdev->msi_trigger;
+ trigger = vgpu->msi_trigger;
if (trigger) {
eventfd_ctx_put(trigger);
- vdev->msi_trigger = NULL;
+ vgpu->msi_trigger = NULL;
}
}

static void __intel_vgpu_release(struct intel_vgpu *vgpu)
{
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
struct kvmgt_guest_info *info;
int ret;
@@ -995,18 +946,18 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
if (!handle_valid(vgpu->handle))
return;

- if (atomic_cmpxchg(&vdev->released, 0, 1))
+ if (atomic_cmpxchg(&vgpu->released, 0, 1))
return;

intel_gvt_release_vgpu(vgpu);

- ret = vfio_unregister_notifier(mdev_dev(vdev->mdev), VFIO_IOMMU_NOTIFY,
- &vdev->iommu_notifier);
+ ret = vfio_unregister_notifier(mdev_dev(vgpu->mdev), VFIO_IOMMU_NOTIFY,
+ &vgpu->iommu_notifier);
drm_WARN(&i915->drm, ret,
"vfio_unregister_notifier for iommu failed: %d\n", ret);

- ret = vfio_unregister_notifier(mdev_dev(vdev->mdev), VFIO_GROUP_NOTIFY,
- &vdev->group_notifier);
+ ret = vfio_unregister_notifier(mdev_dev(vgpu->mdev), VFIO_GROUP_NOTIFY,
+ &vgpu->group_notifier);
drm_WARN(&i915->drm, ret,
"vfio_unregister_notifier for group failed: %d\n", ret);

@@ -1017,9 +968,9 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
kvmgt_guest_exit(info);

intel_vgpu_release_msi_eventfd_ctx(vgpu);
- vfio_group_put_external_user(vdev->vfio_group);
+ vfio_group_put_external_user(vgpu->vfio_group);

- vdev->kvm = NULL;
+ vgpu->kvm = NULL;
vgpu->handle = 0;
}

@@ -1032,10 +983,10 @@ static void intel_vgpu_close_device(struct mdev_device *mdev)

static void intel_vgpu_release_work(struct work_struct *work)
{
- struct kvmgt_vdev *vdev = container_of(work, struct kvmgt_vdev,
- release_work);
+ struct intel_vgpu *vgpu =
+ container_of(work, struct intel_vgpu, release_work);

- __intel_vgpu_release(vdev->vgpu);
+ __intel_vgpu_release(vgpu);
}

static u64 intel_vgpu_get_bar_addr(struct intel_vgpu *vgpu, int bar)
@@ -1117,13 +1068,12 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
size_t count, loff_t *ppos, bool is_write)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned int index = VFIO_PCI_OFFSET_TO_INDEX(*ppos);
u64 pos = *ppos & VFIO_PCI_OFFSET_MASK;
int ret = -EINVAL;


- if (index >= VFIO_PCI_NUM_REGIONS + vdev->num_regions) {
+ if (index >= VFIO_PCI_NUM_REGIONS + vgpu->num_regions) {
gvt_vgpu_err("invalid index: %u\n", index);
return -EINVAL;
}
@@ -1152,11 +1102,11 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
case VFIO_PCI_ROM_REGION_INDEX:
break;
default:
- if (index >= VFIO_PCI_NUM_REGIONS + vdev->num_regions)
+ if (index >= VFIO_PCI_NUM_REGIONS + vgpu->num_regions)
return -EINVAL;

index -= VFIO_PCI_NUM_REGIONS;
- return vdev->region[index].ops->rw(vgpu, buf, count,
+ return vgpu->region[index].ops->rw(vgpu, buf, count,
ppos, is_write);
}

@@ -1409,7 +1359,7 @@ static int intel_vgpu_set_msi_trigger(struct intel_vgpu *vgpu,
gvt_vgpu_err("eventfd_ctx_fdget failed\n");
return PTR_ERR(trigger);
}
- kvmgt_vdev(vgpu)->msi_trigger = trigger;
+ vgpu->msi_trigger = trigger;
} else if ((flags & VFIO_IRQ_SET_DATA_NONE) && !count)
intel_vgpu_release_msi_eventfd_ctx(vgpu);

@@ -1461,7 +1411,6 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
unsigned long arg)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned long minsz;

gvt_dbg_core("vgpu%d ioctl, cmd: %d\n", vgpu->id, cmd);
@@ -1480,7 +1429,7 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
info.flags = VFIO_DEVICE_FLAGS_PCI;
info.flags |= VFIO_DEVICE_FLAGS_RESET;
info.num_regions = VFIO_PCI_NUM_REGIONS +
- vdev->num_regions;
+ vgpu->num_regions;
info.num_irqs = VFIO_PCI_NUM_IRQS;

return copy_to_user((void __user *)arg, &info, minsz) ?
@@ -1571,22 +1520,22 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
.header.version = 1 };

if (info.index >= VFIO_PCI_NUM_REGIONS +
- vdev->num_regions)
+ vgpu->num_regions)
return -EINVAL;
info.index =
array_index_nospec(info.index,
VFIO_PCI_NUM_REGIONS +
- vdev->num_regions);
+ vgpu->num_regions);

i = info.index - VFIO_PCI_NUM_REGIONS;

info.offset =
VFIO_PCI_INDEX_TO_OFFSET(info.index);
- info.size = vdev->region[i].size;
- info.flags = vdev->region[i].flags;
+ info.size = vgpu->region[i].size;
+ info.flags = vgpu->region[i].flags;

- cap_type.type = vdev->region[i].type;
- cap_type.subtype = vdev->region[i].subtype;
+ cap_type.type = vgpu->region[i].type;
+ cap_type.subtype = vgpu->region[i].subtype;

ret = vfio_info_add_capability(&caps,
&cap_type.header,
@@ -1928,15 +1877,13 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
- struct kvmgt_vdev *vdev;
struct kvm *kvm;

vgpu = mdev_get_drvdata(mdev);
if (handle_valid(vgpu->handle))
return -EEXIST;

- vdev = kvmgt_vdev(vgpu);
- kvm = vdev->kvm;
+ kvm = vgpu->kvm;
if (!kvm || kvm->mm != current->mm) {
gvt_vgpu_err("KVM is required to use Intel vGPU\n");
return -ESRCH;
@@ -1962,7 +1909,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
kvm_page_track_register_notifier(kvm, &info->track_node);

debugfs_create_ulong(KVMGT_DEBUGFS_FILENAME, 0444, vgpu->debugfs,
- &vdev->nr_cache_entries);
+ &vgpu->nr_cache_entries);
return 0;
}

@@ -1980,52 +1927,33 @@ static bool kvmgt_guest_exit(struct kvmgt_guest_info *info)
return true;
}

-static int kvmgt_attach_vgpu(void *p_vgpu, unsigned long *handle)
-{
- struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
-
- vgpu->vdev = kzalloc(sizeof(struct kvmgt_vdev), GFP_KERNEL);
-
- if (!vgpu->vdev)
- return -ENOMEM;
-
- kvmgt_vdev(vgpu)->vgpu = vgpu;
-
- return 0;
-}
-
static void kvmgt_detach_vgpu(void *p_vgpu)
{
int i;
struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
- struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);

- if (!vdev->region)
+ if (!vgpu->region)
return;

- for (i = 0; i < vdev->num_regions; i++)
- if (vdev->region[i].ops->release)
- vdev->region[i].ops->release(vgpu,
- &vdev->region[i]);
- vdev->num_regions = 0;
- kfree(vdev->region);
- vdev->region = NULL;
-
- kfree(vdev);
+ for (i = 0; i < vgpu->num_regions; i++)
+ if (vgpu->region[i].ops->release)
+ vgpu->region[i].ops->release(vgpu,
+ &vgpu->region[i]);
+ vgpu->num_regions = 0;
+ kfree(vgpu->region);
+ vgpu->region = NULL;
}

static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
- struct kvmgt_vdev *vdev;

if (!handle_valid(handle))
return -ESRCH;

info = (struct kvmgt_guest_info *)handle;
vgpu = info->vgpu;
- vdev = kvmgt_vdev(vgpu);

/*
* When guest is poweroff, msi_trigger is set to NULL, but vgpu's
@@ -2036,10 +1964,10 @@ static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
* enabled by guest. so if msi_trigger is null, success is still
* returned and don't inject interrupt into guest.
*/
- if (vdev->msi_trigger == NULL)
+ if (vgpu->msi_trigger == NULL)
return 0;

- if (eventfd_signal(vdev->msi_trigger, 1) == 1)
+ if (eventfd_signal(vgpu->msi_trigger, 1) == 1)
return 0;

return -EFAULT;
@@ -2066,7 +1994,6 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
unsigned long size, dma_addr_t *dma_addr)
{
struct intel_vgpu *vgpu;
- struct kvmgt_vdev *vdev;
struct gvt_dma *entry;
int ret;

@@ -2074,9 +2001,8 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
return -EINVAL;

vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
- vdev = kvmgt_vdev(vgpu);

- mutex_lock(&vdev->cache_lock);
+ mutex_lock(&vgpu->cache_lock);

entry = __gvt_cache_find_gfn(vgpu, gfn);
if (!entry) {
@@ -2104,20 +2030,19 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
*dma_addr = entry->dma_addr;
}

- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
return 0;

err_unmap:
gvt_dma_unmap_page(vgpu, gfn, *dma_addr, size);
err_unlock:
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
return ret;
}

static int kvmgt_dma_pin_guest_page(unsigned long handle, dma_addr_t dma_addr)
{
struct kvmgt_guest_info *info;
- struct kvmgt_vdev *vdev;
struct gvt_dma *entry;
int ret = 0;

@@ -2125,15 +2050,14 @@ static int kvmgt_dma_pin_guest_page(unsigned long handle, dma_addr_t dma_addr)
return -ENODEV;

info = (struct kvmgt_guest_info *)handle;
- vdev = kvmgt_vdev(info->vgpu);

- mutex_lock(&vdev->cache_lock);
+ mutex_lock(&info->vgpu->cache_lock);
entry = __gvt_cache_find_dma_addr(info->vgpu, dma_addr);
if (entry)
kref_get(&entry->ref);
else
ret = -ENOMEM;
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&info->vgpu->cache_lock);

return ret;
}
@@ -2150,20 +2074,18 @@ static void __gvt_dma_release(struct kref *ref)
static void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr)
{
struct intel_vgpu *vgpu;
- struct kvmgt_vdev *vdev;
struct gvt_dma *entry;

if (!handle_valid(handle))
return;

vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
- vdev = kvmgt_vdev(vgpu);

- mutex_lock(&vdev->cache_lock);
+ mutex_lock(&vgpu->cache_lock);
entry = __gvt_cache_find_dma_addr(vgpu, dma_addr);
if (entry)
kref_put(&entry->ref, __gvt_dma_release);
- mutex_unlock(&vdev->cache_lock);
+ mutex_unlock(&vgpu->cache_lock);
}

static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,
@@ -2176,8 +2098,7 @@ static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,

info = (struct kvmgt_guest_info *)handle;

- return vfio_dma_rw(kvmgt_vdev(info->vgpu)->vfio_group,
- gpa, buf, len, write);
+ return vfio_dma_rw(info->vgpu->vfio_group, gpa, buf, len, write);
}

static int kvmgt_read_gpa(unsigned long handle, unsigned long gpa,
@@ -2215,7 +2136,6 @@ static bool kvmgt_is_valid_gfn(unsigned long handle, unsigned long gfn)
static const struct intel_gvt_mpt kvmgt_mpt = {
.host_init = kvmgt_host_init,
.host_exit = kvmgt_host_exit,
- .attach_vgpu = kvmgt_attach_vgpu,
.detach_vgpu = kvmgt_detach_vgpu,
.inject_msi = kvmgt_inject_msi,
.enable_page_track = kvmgt_page_track_add,
diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 6d062cf71de92..8a659301d78b9 100644
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -71,22 +71,6 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
intel_gvt_host.mpt->host_exit(dev, gvt);
}

-/**
- * intel_gvt_hypervisor_attach_vgpu - call hypervisor to initialize vGPU
- * related stuffs inside hypervisor.
- *
- * Returns:
- * Zero on success, negative error code if failed.
- */
-static inline int intel_gvt_hypervisor_attach_vgpu(struct intel_vgpu *vgpu)
-{
- /* optional to provide */
- if (!intel_gvt_host.mpt->attach_vgpu)
- return 0;
-
- return intel_gvt_host.mpt->attach_vgpu(vgpu, &vgpu->handle);
-}
-
/**
* intel_gvt_hypervisor_detach_vgpu - call hypervisor to release vGPU
* related stuffs inside hypervisor.
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 8dddd0a940a1b..fd335a7bcb849 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -405,13 +405,9 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,

populate_pvinfo_page(vgpu);

- ret = intel_gvt_hypervisor_attach_vgpu(vgpu);
- if (ret)
- goto out_clean_vgpu_resource;
-
ret = intel_vgpu_init_gtt(vgpu);
if (ret)
- goto out_detach_hypervisor_vgpu;
+ goto out_clean_vgpu_resource;

ret = intel_vgpu_init_opregion(vgpu);
if (ret)
@@ -454,8 +450,6 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
intel_vgpu_clean_opregion(vgpu);
out_clean_gtt:
intel_vgpu_clean_gtt(vgpu);
-out_detach_hypervisor_vgpu:
- intel_gvt_hypervisor_detach_vgpu(vgpu);
out_clean_vgpu_resource:
intel_vgpu_free_resource(vgpu);
out_clean_vgpu_mmio:
--
2.30.2