| Message ID | 16-v1-7dedf20b2b75+4f785-vfio2_jgg@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Make vfio_mdev type safe | expand |
> From: Jason Gunthorpe > Sent: Wednesday, March 24, 2021 1:56 AM > > intel_gvt_init_vgpu_type_groups() makes gvt->types 1:1 with the > supported_type_groups array, so the type_group_id is also the index into > gvt->types. Use it directly and remove the string matching. > > Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> > --- > drivers/gpu/drm/i915/gvt/gvt.c | 24 +++++++----------------- > drivers/gpu/drm/i915/gvt/gvt.h | 4 ++-- > drivers/gpu/drm/i915/gvt/kvmgt.c | 5 ++--- > 3 files changed, 11 insertions(+), 22 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c > index d1d8ee4a5f16a3..4b47a18e9dfa0f 100644 > --- a/drivers/gpu/drm/i915/gvt/gvt.c > +++ b/drivers/gpu/drm/i915/gvt/gvt.c > @@ -46,22 +46,12 @@ static const char * const supported_hypervisors[] = { > [INTEL_GVT_HYPERVISOR_KVM] = "KVM", > }; > > -static struct intel_vgpu_type *intel_gvt_find_vgpu_type(struct intel_gvt *gvt, > - const char *name) > +static struct intel_vgpu_type * > +intel_gvt_find_vgpu_type(struct intel_gvt *gvt, unsigned int type_group_id) > { > - const char *driver_name = > - dev_driver_string(&gvt->gt->i915->drm.pdev->dev); > - int i; > - > - name += strlen(driver_name) + 1; > - for (i = 0; i < gvt->num_types; i++) { > - struct intel_vgpu_type *t = &gvt->types[i]; > - > - if (!strncmp(t->name, name, sizeof(t->name))) > - return t; > - } > - > - return NULL; > + if (WARN_ON(type_group_id >= gvt->num_types)) > + return NULL; > + return &gvt->types[type_group_id]; > } > > static ssize_t available_instances_show(struct kobject *kobj, > @@ -71,7 +61,7 @@ static ssize_t available_instances_show(struct kobject > *kobj, > unsigned int num = 0; > void *gvt = kdev_to_i915(dev)->gvt; > > - type = intel_gvt_find_vgpu_type(gvt, kobject_name(kobj)); > + type = intel_gvt_find_vgpu_type(gvt, > mtype_get_type_group_id(kobj)); > if (!type) > num = 0; > else > @@ -92,7 +82,7 @@ static ssize_t description_show(struct kobject *kobj, > struct device *dev, > struct intel_vgpu_type *type; > void *gvt = kdev_to_i915(dev)->gvt; > > - type = intel_gvt_find_vgpu_type(gvt, kobject_name(kobj)); > + type = intel_gvt_find_vgpu_type(gvt, > mtype_get_type_group_id(kobj)); > if (!type) > return 0; > > diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h > index 03c993d68f105a..0cf480f42850d2 100644 > --- a/drivers/gpu/drm/i915/gvt/gvt.h > +++ b/drivers/gpu/drm/i915/gvt/gvt.h > @@ -569,8 +569,8 @@ struct intel_gvt_ops { > void (*vgpu_reset)(struct intel_vgpu *); > void (*vgpu_activate)(struct intel_vgpu *); > void (*vgpu_deactivate)(struct intel_vgpu *); > - struct intel_vgpu_type *(*gvt_find_vgpu_type)(struct intel_gvt *gvt, > - const char *name); > + struct intel_vgpu_type *(*gvt_find_vgpu_type)( > + struct intel_gvt *gvt, unsigned int type_group_id); > bool (*get_gvt_attrs)(struct attribute_group > ***intel_vgpu_type_groups); > int (*vgpu_query_plane)(struct intel_vgpu *vgpu, void *); > int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int); > diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c > b/drivers/gpu/drm/i915/gvt/kvmgt.c > index b4348256ae9591..16e1e4a38aa1f6 100644 > --- a/drivers/gpu/drm/i915/gvt/kvmgt.c > +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c > @@ -700,10 +700,9 @@ static int intel_vgpu_create(struct kobject *kobj, > struct mdev_device *mdev) > pdev = mdev_parent_dev(mdev); > gvt = kdev_to_i915(pdev)->gvt; > > - type = intel_gvt_ops->gvt_find_vgpu_type(gvt, kobject_name(kobj)); > + type = intel_gvt_ops->gvt_find_vgpu_type(gvt, > + > mdev_get_type_group_id(mdev)); > if (!type) { > - gvt_vgpu_err("failed to find type %s to create\n", > - kobject_name(kobj)); > ret = -EINVAL; > goto out; > } > -- > 2.31.0 > > _______________________________________________ > intel-gvt-dev mailing list > intel-gvt-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gvt-dev
diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index d1d8ee4a5f16a3..4b47a18e9dfa0f 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -46,22 +46,12 @@ static const char * const supported_hypervisors[] = { [INTEL_GVT_HYPERVISOR_KVM] = "KVM", }; -static struct intel_vgpu_type *intel_gvt_find_vgpu_type(struct intel_gvt *gvt, - const char *name) +static struct intel_vgpu_type * +intel_gvt_find_vgpu_type(struct intel_gvt *gvt, unsigned int type_group_id) { - const char *driver_name = - dev_driver_string(&gvt->gt->i915->drm.pdev->dev); - int i; - - name += strlen(driver_name) + 1; - for (i = 0; i < gvt->num_types; i++) { - struct intel_vgpu_type *t = &gvt->types[i]; - - if (!strncmp(t->name, name, sizeof(t->name))) - return t; - } - - return NULL; + if (WARN_ON(type_group_id >= gvt->num_types)) + return NULL; + return &gvt->types[type_group_id]; } static ssize_t available_instances_show(struct kobject *kobj, @@ -71,7 +61,7 @@ static ssize_t available_instances_show(struct kobject *kobj, unsigned int num = 0; void *gvt = kdev_to_i915(dev)->gvt; - type = intel_gvt_find_vgpu_type(gvt, kobject_name(kobj)); + type = intel_gvt_find_vgpu_type(gvt, mtype_get_type_group_id(kobj)); if (!type) num = 0; else @@ -92,7 +82,7 @@ static ssize_t description_show(struct kobject *kobj, struct device *dev, struct intel_vgpu_type *type; void *gvt = kdev_to_i915(dev)->gvt; - type = intel_gvt_find_vgpu_type(gvt, kobject_name(kobj)); + type = intel_gvt_find_vgpu_type(gvt, mtype_get_type_group_id(kobj)); if (!type) return 0; diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index 03c993d68f105a..0cf480f42850d2 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -569,8 +569,8 @@ struct intel_gvt_ops { void (*vgpu_reset)(struct intel_vgpu *); void (*vgpu_activate)(struct intel_vgpu *); void (*vgpu_deactivate)(struct intel_vgpu *); - struct intel_vgpu_type *(*gvt_find_vgpu_type)(struct intel_gvt *gvt, - const char *name); + struct intel_vgpu_type *(*gvt_find_vgpu_type)( + struct intel_gvt *gvt, unsigned int type_group_id); bool (*get_gvt_attrs)(struct attribute_group ***intel_vgpu_type_groups); int (*vgpu_query_plane)(struct intel_vgpu *vgpu, void *); int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int); diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index b4348256ae9591..16e1e4a38aa1f6 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -700,10 +700,9 @@ static int intel_vgpu_create(struct kobject *kobj, struct mdev_device *mdev) pdev = mdev_parent_dev(mdev); gvt = kdev_to_i915(pdev)->gvt; - type = intel_gvt_ops->gvt_find_vgpu_type(gvt, kobject_name(kobj)); + type = intel_gvt_ops->gvt_find_vgpu_type(gvt, + mdev_get_type_group_id(mdev)); if (!type) { - gvt_vgpu_err("failed to find type %s to create\n", - kobject_name(kobj)); ret = -EINVAL; goto out; }
intel_gvt_init_vgpu_type_groups() makes gvt->types 1:1 with the supported_type_groups array, so the type_group_id is also the index into gvt->types. Use it directly and remove the string matching. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> --- drivers/gpu/drm/i915/gvt/gvt.c | 24 +++++++----------------- drivers/gpu/drm/i915/gvt/gvt.h | 4 ++-- drivers/gpu/drm/i915/gvt/kvmgt.c | 5 ++--- 3 files changed, 11 insertions(+), 22 deletions(-)