Re: [PATCH 2/2] tests/panthor/panthor_vm: Add vm_bind intersect-with-kbo-range test

[Boris Brezillon <boris.brezillon@collabora.com>]

On Tue, 16 Jun 2026 16:43:23 +0100
Adrián Larumbe <adrian.larumbe@collabora.com> wrote:

> Users of vm_bind ioctl() should never specify a VA region that intersects
> with that reserved for internal kernel BOs.
> 
> Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>

> ---
>  tests/panthor/panthor_vm.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/tests/panthor/panthor_vm.c b/tests/panthor/panthor_vm.c
> index 92b105b9e83a..9548dbcbaa45 100644
> --- a/tests/panthor/panthor_vm.c
> +++ b/tests/panthor/panthor_vm.c
> @@ -270,6 +270,23 @@ int igt_main() {
>  		igt_panthor_vm_destroy(fd, vm_id, 0);
>  	}
>  
> +	igt_describe("Perform a vm_bind in the VM's kernel BOs reserved range");
> +	igt_subtest("vm_bind_intersect_kbo_range") {
> +		uint32_t vm_id;
> +		struct panthor_bo bo;
> +		uint64_t bo_size = SZ_2M;
> +		uint64_t uva_range;
> +
> +		igt_panthor_vm_create_userva_range(fd, &vm_id, 0, &uva_range);
> +		igt_assert(vm_id != 0);
> +
> +		igt_panthor_bo_create(fd, &bo, bo_size, 0, 0);
> +		igt_panthor_vm_bind(fd, vm_id, bo.handle, ALIGN(uva_range, bo_size),
> +				    bo_size, DRM_PANTHOR_VM_BIND_OP_TYPE_MAP, EINVAL);
> +
> +		igt_panthor_vm_destroy(fd, vm_id, 0);
> +	}
> +
>  	igt_fixture() {
>  		drm_close_driver(fd);
>  	}
>