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authorLinus Torvalds <torvalds@linux-foundation.org>2022-12-15 13:12:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-12-15 13:12:15 -0800
commit785d21ba2f447fb26df4b22f45653763beb767ea (patch)
tree6c447d85c3359198921807a1d121499d47c80233 /include/linux
parent8fa590bf344816c925810331eea8387627bbeb40 (diff)
parent70be6f322860d322ebcd120cf0c05402ead5c6de (diff)
Merge tag 'vfio-v6.2-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson: - Replace deprecated git://github.com link in MAINTAINERS (Palmer Dabbelt) - Simplify vfio/mlx5 with module_pci_driver() helper (Shang XiaoJing) - Drop unnecessary buffer from ACPI call (Rafael Mendonca) - Correct latent missing include issue in iova-bitmap and fix support for unaligned bitmaps. Follow-up with better fix through refactor (Joao Martins) - Rework ccw mdev driver to split private data from parent structure, better aligning with the mdev lifecycle and allowing us to remove a temporary workaround (Eric Farman) - Add an interface to get an estimated migration data size for a device, allowing userspace to make informed decisions, ex. more accurately predicting VM downtime (Yishai Hadas) - Fix minor typo in vfio/mlx5 array declaration (Yishai Hadas) - Simplify module and Kconfig through consolidating SPAPR/EEH code and config options and folding virqfd module into main vfio module (Jason Gunthorpe) - Fix error path from device_register() across all vfio mdev and sample drivers (Alex Williamson) - Define migration pre-copy interface and implement for vfio/mlx5 devices, allowing portions of the device state to be saved while the device continues operation, towards reducing the stop-copy state size (Jason Gunthorpe, Yishai Hadas, Shay Drory) - Implement pre-copy for hisi_acc devices (Shameer Kolothum) - Fixes to mdpy mdev driver remove path and error path on probe (Shang XiaoJing) - vfio/mlx5 fixes for incorrect return after copy_to_user() fault and incorrect buffer freeing (Dan Carpenter) * tag 'vfio-v6.2-rc1' of https://github.com/awilliam/linux-vfio: (42 commits) vfio/mlx5: error pointer dereference in error handling vfio/mlx5: fix error code in mlx5vf_precopy_ioctl() samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() hisi_acc_vfio_pci: Enable PRE_COPY flag hisi_acc_vfio_pci: Move the dev compatibility tests for early check hisi_acc_vfio_pci: Introduce support for PRE_COPY state transitions hisi_acc_vfio_pci: Add support for precopy IOCTL vfio/mlx5: Enable MIGRATION_PRE_COPY flag vfio/mlx5: Fallback to STOP_COPY upon specific PRE_COPY error vfio/mlx5: Introduce multiple loads vfio/mlx5: Consider temporary end of stream as part of PRE_COPY vfio/mlx5: Introduce vfio precopy ioctl implementation vfio/mlx5: Introduce SW headers for migration states vfio/mlx5: Introduce device transitions of PRE_COPY vfio/mlx5: Refactor to use queue based data chunks vfio/mlx5: Refactor migration file state vfio/mlx5: Refactor MKEY usage vfio/mlx5: Refactor PD usage vfio/mlx5: Enforce a single SAVE command at a time vfio: Extend the device migration protocol with PRE_COPY ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mlx5/mlx5_ifc.h14
-rw-r--r--include/linux/vfio.h31
2 files changed, 16 insertions, 29 deletions
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 152d2d7f8743..f3d1c62c98dd 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1891,7 +1891,12 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
u8 max_reformat_remove_size[0x8];
u8 max_reformat_remove_offset[0x8];
- u8 reserved_at_c0[0xe0];
+ u8 reserved_at_c0[0x8];
+ u8 migration_multi_load[0x1];
+ u8 migration_tracking_state[0x1];
+ u8 reserved_at_ca[0x16];
+
+ u8 reserved_at_e0[0xc0];
u8 reserved_at_1a0[0xb];
u8 log_min_mkey_entity_size[0x5];
@@ -12033,7 +12038,8 @@ struct mlx5_ifc_query_vhca_migration_state_in_bits {
u8 reserved_at_20[0x10];
u8 op_mod[0x10];
- u8 reserved_at_40[0x10];
+ u8 incremental[0x1];
+ u8 reserved_at_41[0xf];
u8 vhca_id[0x10];
u8 reserved_at_60[0x20];
@@ -12059,7 +12065,9 @@ struct mlx5_ifc_save_vhca_state_in_bits {
u8 reserved_at_20[0x10];
u8 op_mod[0x10];
- u8 reserved_at_40[0x10];
+ u8 incremental[0x1];
+ u8 set_track[0x1];
+ u8 reserved_at_42[0xe];
u8 vhca_id[0x10];
u8 reserved_at_60[0x20];
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index a615542df1e0..35be78e9ae57 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -146,6 +146,9 @@ int vfio_iommufd_emulated_attach_ioas(struct vfio_device *vdev, u32 *pt_id);
* @migration_get_state: Optional callback to get the migration state for
* devices that support migration. It's mandatory for
* VFIO_DEVICE_FEATURE_MIGRATION migration support.
+ * @migration_get_data_size: Optional callback to get the estimated data
+ * length that will be required to complete stop copy. It's mandatory for
+ * VFIO_DEVICE_FEATURE_MIGRATION migration support.
*/
struct vfio_migration_ops {
struct file *(*migration_set_state)(
@@ -153,6 +156,8 @@ struct vfio_migration_ops {
enum vfio_device_mig_state new_state);
int (*migration_get_state)(struct vfio_device *device,
enum vfio_device_mig_state *curr_state);
+ int (*migration_get_data_size)(struct vfio_device *device,
+ unsigned long *stop_copy_length);
};
/**
@@ -215,9 +220,6 @@ struct vfio_device *_vfio_alloc_device(size_t size, struct device *dev,
dev, ops), \
struct dev_struct, member)
-int vfio_init_device(struct vfio_device *device, struct device *dev,
- const struct vfio_device_ops *ops);
-void vfio_free_device(struct vfio_device *device);
static inline void vfio_put_device(struct vfio_device *device)
{
put_device(&device->device);
@@ -271,29 +273,6 @@ int vfio_set_irqs_validate_and_prepare(struct vfio_irq_set *hdr,
int num_irqs, int max_irq_type,
size_t *data_size);
-struct pci_dev;
-#if IS_ENABLED(CONFIG_VFIO_SPAPR_EEH)
-void vfio_spapr_pci_eeh_open(struct pci_dev *pdev);
-void vfio_spapr_pci_eeh_release(struct pci_dev *pdev);
-long vfio_spapr_iommu_eeh_ioctl(struct iommu_group *group, unsigned int cmd,
- unsigned long arg);
-#else
-static inline void vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
-{
-}
-
-static inline void vfio_spapr_pci_eeh_release(struct pci_dev *pdev)
-{
-}
-
-static inline long vfio_spapr_iommu_eeh_ioctl(struct iommu_group *group,
- unsigned int cmd,
- unsigned long arg)
-{
- return -ENOTTY;
-}
-#endif /* CONFIG_VFIO_SPAPR_EEH */
-
/*
* IRQfd - generic
*/