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| author | Jason Gunthorpe <jgg@nvidia.com> | 2026-09-21 19:35:46 -0300 |
|---|---|---|
| committer | Alex Williamson <alex@shazbot.org> | 2026-09-28 14:10:48 -0600 |
| commit | 53e5fe5f28df72dd5917b74665465d42b2f0e90e (patch) | |
| tree | 43d2c75d078db3c9932847424eed2873877a439a /tools/testing/selftests/vfio/lib/drivers | |
| parent | be0237a5f35df3518953075c375cc07fe09aef38 (diff) | |
| download | linux-next-53e5fe5f28df72dd5917b74665465d42b2f0e90e.tar.gz linux-next-53e5fe5f28df72dd5917b74665465d42b2f0e90e.zip | |
vfio: selftests: Allow drivers to specify required region size
Add a region_size field to struct vfio_pci_driver_ops so drivers can
declare how much DMA-mapped region they need. The mlx5 driver will need
~18MB for firmware pages. Existing drivers pass in the sizeof their state
struct. Since drivers all use only their declared state we can use the
value directly and remove the SZ_2M hard coding.
Assisted-by: Claude:claude-opus-4.6
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Diffstat (limited to 'tools/testing/selftests/vfio/lib/drivers')
4 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/vfio/lib/drivers/dsa/dsa.c b/tools/testing/selftests/vfio/lib/drivers/dsa/dsa.c index 19d9630b24c2..40b8541b588e 100644 --- a/tools/testing/selftests/vfio/lib/drivers/dsa/dsa.c +++ b/tools/testing/selftests/vfio/lib/drivers/dsa/dsa.c @@ -418,6 +418,7 @@ static void dsa_send_msi(struct vfio_pci_device *device) const struct vfio_pci_driver_ops dsa_ops = { .name = "dsa", + .region_size = sizeof(struct dsa_state), .probe = dsa_probe, .init = dsa_init, .remove = dsa_remove, diff --git a/tools/testing/selftests/vfio/lib/drivers/igb/igb.c b/tools/testing/selftests/vfio/lib/drivers/igb/igb.c index fd9e05d77ea4..2fafcc9f51c0 100644 --- a/tools/testing/selftests/vfio/lib/drivers/igb/igb.c +++ b/tools/testing/selftests/vfio/lib/drivers/igb/igb.c @@ -576,6 +576,7 @@ static void igb_send_msi(struct vfio_pci_device *device) const struct vfio_pci_driver_ops igb_ops = { .name = "igb", + .region_size = sizeof(struct igb), .probe = igb_probe, .init = igb_init, .remove = igb_remove, diff --git a/tools/testing/selftests/vfio/lib/drivers/ioat/ioat.c b/tools/testing/selftests/vfio/lib/drivers/ioat/ioat.c index a871b935542b..c9b28365c5eb 100644 --- a/tools/testing/selftests/vfio/lib/drivers/ioat/ioat.c +++ b/tools/testing/selftests/vfio/lib/drivers/ioat/ioat.c @@ -226,6 +226,7 @@ static void ioat_send_msi(struct vfio_pci_device *device) const struct vfio_pci_driver_ops ioat_ops = { .name = "ioat", + .region_size = sizeof(struct ioat_state), .probe = ioat_probe, .init = ioat_init, .remove = ioat_remove, diff --git a/tools/testing/selftests/vfio/lib/drivers/nv_falcon/nv_falcon.c b/tools/testing/selftests/vfio/lib/drivers/nv_falcon/nv_falcon.c index c08aa81c44f4..6958877ad463 100644 --- a/tools/testing/selftests/vfio/lib/drivers/nv_falcon/nv_falcon.c +++ b/tools/testing/selftests/vfio/lib/drivers/nv_falcon/nv_falcon.c @@ -775,6 +775,7 @@ static int nv_falcon_memcpy_wait(struct vfio_pci_device *device) const struct vfio_pci_driver_ops nv_falcon_ops = { .name = "nv_falcon", + .region_size = sizeof(struct gpu_device), .probe = nv_falcon_probe, .init = nv_falcon_init, .remove = nv_falcon_remove, |