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drm/i915/gvt: merge struct kvmgt_guest_info into strut intel_vgpu

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Consolidate the per-VGPU structures into a single one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220411141403.86980-12-hch@lst.de
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
This commit is contained in:
Christoph Hellwig 2022-04-11 16:13:40 +02:00 committed by Zhi Wang
parent 62980cacc3
commit 10ddb96295
2 changed files with 52 additions and 73 deletions
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8
drivers/gpu/drm/i915/gvt/gvt.h
View File

@ -34,6 +34,7 @@
#define _GVT_H_
#include <uapi/linux/pci_regs.h>
#include <linux/kvm_host.h>
#include "i915_drv.h"
#include "intel_gvt.h"
@ -174,6 +175,8 @@ struct intel_vgpu_submission {
} last_ctx[I915_NUM_ENGINES];
};
#define KVMGT_DEBUGFS_FILENAME "kvmgt_nr_cache_entries"
struct intel_vgpu {
struct intel_gvt *gvt;
struct mutex vgpu_lock;
@ -236,6 +239,11 @@ struct intel_vgpu {
atomic_t released;
struct vfio_device *vfio_device;
struct vfio_group *vfio_group;
struct kvm_page_track_notifier_node track_node;
#define NR_BKT (1 << 18)
struct hlist_head ptable[NR_BKT];
#undef NR_BKT
};
/* validating GM healthy status*/

117
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@ -39,7 +39,6 @@
#include <linux/spinlock.h>
#include <linux/eventfd.h>
#include <linux/uuid.h>
#include <linux/kvm_host.h>
#include <linux/vfio.h>
#include <linux/mdev.h>
#include <linux/debugfs.h>
@ -92,16 +91,6 @@ struct kvmgt_pgfn {
struct hlist_node hnode;
};
#define KVMGT_DEBUGFS_FILENAME "kvmgt_nr_cache_entries"
struct kvmgt_guest_info {
struct kvm *kvm;
struct intel_vgpu *vgpu;
struct kvm_page_track_notifier_node track_node;
#define NR_BKT (1 << 18)
struct hlist_head ptable[NR_BKT];
#undef NR_BKT
};
struct gvt_dma {
struct intel_vgpu *vgpu;
struct rb_node gfn_node;
@ -232,7 +221,7 @@ static void intel_gvt_cleanup_vgpu_type_groups(struct intel_gvt *gvt)
static int kvmgt_guest_init(struct mdev_device *mdev);
static void intel_vgpu_release_work(struct work_struct *work);
static bool kvmgt_guest_exit(struct kvmgt_guest_info *info);
static bool kvmgt_guest_exit(struct intel_vgpu *info);
static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long size)
@ -456,12 +445,12 @@ static void gvt_cache_init(struct intel_vgpu *vgpu)
mutex_init(&vgpu->cache_lock);
}
static void kvmgt_protect_table_init(struct kvmgt_guest_info *info)
static void kvmgt_protect_table_init(struct intel_vgpu *info)
{
hash_init(info->ptable);
}
static void kvmgt_protect_table_destroy(struct kvmgt_guest_info *info)
static void kvmgt_protect_table_destroy(struct intel_vgpu *info)
{
struct kvmgt_pgfn *p;
struct hlist_node *tmp;
@ -474,7 +463,7 @@ static void kvmgt_protect_table_destroy(struct kvmgt_guest_info *info)
}
static struct kvmgt_pgfn *
__kvmgt_protect_table_find(struct kvmgt_guest_info *info, gfn_t gfn)
__kvmgt_protect_table_find(struct intel_vgpu *info, gfn_t gfn)
{
struct kvmgt_pgfn *p, *res = NULL;
@ -488,8 +477,7 @@ __kvmgt_protect_table_find(struct kvmgt_guest_info *info, gfn_t gfn)
return res;
}
static bool kvmgt_gfn_is_write_protected(struct kvmgt_guest_info *info,
gfn_t gfn)
static bool kvmgt_gfn_is_write_protected(struct intel_vgpu *info, gfn_t gfn)
{
struct kvmgt_pgfn *p;
@ -497,7 +485,7 @@ static bool kvmgt_gfn_is_write_protected(struct kvmgt_guest_info *info,
return !!p;
}
static void kvmgt_protect_table_add(struct kvmgt_guest_info *info, gfn_t gfn)
static void kvmgt_protect_table_add(struct intel_vgpu *info, gfn_t gfn)
{
struct kvmgt_pgfn *p;
@ -512,8 +500,7 @@ static void kvmgt_protect_table_add(struct kvmgt_guest_info *info, gfn_t gfn)
hash_add(info->ptable, &p->hnode, gfn);
}
static void kvmgt_protect_table_del(struct kvmgt_guest_info *info,
gfn_t gfn)
static void kvmgt_protect_table_del(struct intel_vgpu *info, gfn_t gfn)
{
struct kvmgt_pgfn *p;
@ -940,7 +927,6 @@ static void intel_vgpu_release_msi_eventfd_ctx(struct intel_vgpu *vgpu)
static void __intel_vgpu_release(struct intel_vgpu *vgpu)
{
struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
struct kvmgt_guest_info *info;
int ret;
if (!handle_valid(vgpu->handle))
@ -964,8 +950,7 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
/* dereference module reference taken at open */
module_put(THIS_MODULE);
info = (struct kvmgt_guest_info *)vgpu->handle;
kvmgt_guest_exit(info);
kvmgt_guest_exit(vgpu);
intel_vgpu_release_msi_eventfd_ctx(vgpu);
vfio_group_put_external_user(vgpu->vfio_group);
@ -1751,7 +1736,7 @@ static void kvmgt_host_exit(struct device *dev, void *gvt)
static int kvmgt_page_track_add(unsigned long handle, u64 gfn)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *info;
struct kvm *kvm;
struct kvm_memory_slot *slot;
int idx;
@ -1759,7 +1744,7 @@ static int kvmgt_page_track_add(unsigned long handle, u64 gfn)
if (!handle_valid(handle))
return -ESRCH;
info = (struct kvmgt_guest_info *)handle;
info = (struct intel_vgpu *)handle;
kvm = info->kvm;
idx = srcu_read_lock(&kvm->srcu);
@ -1785,7 +1770,7 @@ static int kvmgt_page_track_add(unsigned long handle, u64 gfn)
static int kvmgt_page_track_remove(unsigned long handle, u64 gfn)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *info;
struct kvm *kvm;
struct kvm_memory_slot *slot;
int idx;
@ -1793,7 +1778,7 @@ static int kvmgt_page_track_remove(unsigned long handle, u64 gfn)
if (!handle_valid(handle))
return 0;
info = (struct kvmgt_guest_info *)handle;
info = (struct intel_vgpu *)handle;
kvm = info->kvm;
idx = srcu_read_lock(&kvm->srcu);
@ -1821,11 +1806,11 @@ static void kvmgt_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
const u8 *val, int len,
struct kvm_page_track_notifier_node *node)
{
struct kvmgt_guest_info *info = container_of(node,
struct kvmgt_guest_info, track_node);
struct intel_vgpu *info =
container_of(node, struct intel_vgpu, track_node);
if (kvmgt_gfn_is_write_protected(info, gpa_to_gfn(gpa)))
intel_vgpu_page_track_handler(info->vgpu, gpa,
intel_vgpu_page_track_handler(info, gpa,
(void *)val, len);
}
@ -1835,8 +1820,8 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
{
int i;
gfn_t gfn;
struct kvmgt_guest_info *info = container_of(node,
struct kvmgt_guest_info, track_node);
struct intel_vgpu *info =
container_of(node, struct intel_vgpu, track_node);
write_lock(&kvm->mmu_lock);
for (i = 0; i < slot->npages; i++) {
@ -1853,7 +1838,6 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)
{
struct intel_vgpu *itr;
struct kvmgt_guest_info *info;
int id;
bool ret = false;
@ -1862,8 +1846,7 @@ static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)
if (!handle_valid(itr->handle))
continue;
info = (struct kvmgt_guest_info *)itr->handle;
if (kvm && kvm == info->kvm) {
if (kvm && kvm == itr->kvm) {
ret = true;
goto out;
}
@ -1875,7 +1858,6 @@ static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)
static int kvmgt_guest_init(struct mdev_device *mdev)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
struct kvm *kvm;
@ -1892,38 +1874,29 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
if (__kvmgt_vgpu_exist(vgpu, kvm))
return -EEXIST;
info = vzalloc(sizeof(struct kvmgt_guest_info));
if (!info)
return -ENOMEM;
vgpu->handle = (unsigned long)vgpu;
kvm_get_kvm(vgpu->kvm);
vgpu->handle = (unsigned long)info;
info->vgpu = vgpu;
info->kvm = kvm;
kvm_get_kvm(info->kvm);
kvmgt_protect_table_init(info);
kvmgt_protect_table_init(vgpu);
gvt_cache_init(vgpu);
info->track_node.track_write = kvmgt_page_track_write;
info->track_node.track_flush_slot = kvmgt_page_track_flush_slot;
kvm_page_track_register_notifier(kvm, &info->track_node);
vgpu->track_node.track_write = kvmgt_page_track_write;
vgpu->track_node.track_flush_slot = kvmgt_page_track_flush_slot;
kvm_page_track_register_notifier(kvm, &vgpu->track_node);
debugfs_create_ulong(KVMGT_DEBUGFS_FILENAME, 0444, vgpu->debugfs,
&vgpu->nr_cache_entries);
return 0;
}
static bool kvmgt_guest_exit(struct kvmgt_guest_info *info)
static bool kvmgt_guest_exit(struct intel_vgpu *info)
{
debugfs_remove(debugfs_lookup(KVMGT_DEBUGFS_FILENAME,
info->vgpu->debugfs));
debugfs_remove(debugfs_lookup(KVMGT_DEBUGFS_FILENAME, info->debugfs));
kvm_page_track_unregister_notifier(info->kvm, &info->track_node);
kvm_put_kvm(info->kvm);
kvmgt_protect_table_destroy(info);
gvt_cache_destroy(info->vgpu);
vfree(info);
gvt_cache_destroy(info);
return true;
}
@ -1946,14 +1919,12 @@ static void kvmgt_detach_vgpu(void *p_vgpu)
static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
if (!handle_valid(handle))
return -ESRCH;
info = (struct kvmgt_guest_info *)handle;
vgpu = info->vgpu;
vgpu = (struct intel_vgpu *)handle;
/*
* When guest is poweroff, msi_trigger is set to NULL, but vgpu's
@ -1975,15 +1946,15 @@ static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)
static unsigned long kvmgt_gfn_to_pfn(unsigned long handle, unsigned long gfn)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
kvm_pfn_t pfn;
if (!handle_valid(handle))
return INTEL_GVT_INVALID_ADDR;
info = (struct kvmgt_guest_info *)handle;
vgpu = (struct intel_vgpu *)handle;
pfn = gfn_to_pfn(info->kvm, gfn);
pfn = gfn_to_pfn(vgpu->kvm, gfn);
if (is_error_noslot_pfn(pfn))
return INTEL_GVT_INVALID_ADDR;
@ -2000,7 +1971,7 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
if (!handle_valid(handle))
return -EINVAL;
vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
vgpu = (struct intel_vgpu *)handle;
mutex_lock(&vgpu->cache_lock);
@ -2042,22 +2013,22 @@ static int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn,
static int kvmgt_dma_pin_guest_page(unsigned long handle, dma_addr_t dma_addr)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
struct gvt_dma *entry;
int ret = 0;
if (!handle_valid(handle))
return -ENODEV;
info = (struct kvmgt_guest_info *)handle;
vgpu = (struct intel_vgpu *)handle;
mutex_lock(&info->vgpu->cache_lock);
entry = __gvt_cache_find_dma_addr(info->vgpu, dma_addr);
mutex_lock(&vgpu->cache_lock);
entry = __gvt_cache_find_dma_addr(vgpu, dma_addr);
if (entry)
kref_get(&entry->ref);
else
ret = -ENOMEM;
mutex_unlock(&info->vgpu->cache_lock);
mutex_unlock(&vgpu->cache_lock);
return ret;
}
@ -2079,7 +2050,7 @@ static void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr
if (!handle_valid(handle))
return;
vgpu = ((struct kvmgt_guest_info *)handle)->vgpu;
vgpu = (struct intel_vgpu *)handle;
mutex_lock(&vgpu->cache_lock);
entry = __gvt_cache_find_dma_addr(vgpu, dma_addr);
@ -2091,14 +2062,14 @@ static void kvmgt_dma_unmap_guest_page(unsigned long handle, dma_addr_t dma_addr
static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,
void *buf, unsigned long len, bool write)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
if (!handle_valid(handle))
return -ESRCH;
info = (struct kvmgt_guest_info *)handle;
vgpu = (struct intel_vgpu *)handle;
return vfio_dma_rw(info->vgpu->vfio_group, gpa, buf, len, write);
return vfio_dma_rw(vgpu->vfio_group, gpa, buf, len, write);
}
static int kvmgt_read_gpa(unsigned long handle, unsigned long gpa,
@ -2115,7 +2086,7 @@ static int kvmgt_write_gpa(unsigned long handle, unsigned long gpa,
static bool kvmgt_is_valid_gfn(unsigned long handle, unsigned long gfn)
{
struct kvmgt_guest_info *info;
struct intel_vgpu *vgpu;
struct kvm *kvm;
int idx;
bool ret;
@ -2123,8 +2094,8 @@ static bool kvmgt_is_valid_gfn(unsigned long handle, unsigned long gfn)
if (!handle_valid(handle))
return false;
info = (struct kvmgt_guest_info *)handle;
kvm = info->kvm;
vgpu = (struct intel_vgpu *)handle;
kvm = vgpu->kvm;
idx = srcu_read_lock(&kvm->srcu);
ret = kvm_is_visible_gfn(kvm, gfn);