Commit 9d7993a7 authored by Mukul Joshi's avatar Mukul Joshi Committed by Alex Deucher
Browse files

drm/amdkfd: Check cgroup when returning DMABuf info 



Check cgroup permissions when returning DMA-buf info and
based on cgroup info return the GPU id of the GPU that have
access to the BO.

Signed-off-by: default avatarMukul Joshi <mukul.joshi@amd.com>
Reviewed-by: default avatarFelix Kuehling <felix.kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 075ec164

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+2 −2
Original line number Diff line number Diff line
@@ -1523,7 +1523,7 @@ static int kfd_ioctl_get_dmabuf_info(struct file *filep, 


	/* Find a KFD GPU device that supports the get_dmabuf_info query */

	for (i = 0; kfd_topology_enum_kfd_devices(i, &dev) == 0; i++)

		if (dev)

		if (dev && !kfd_devcgroup_check_permission(dev))

			break;

	if (!dev)

		return -EINVAL;
@@ -1545,7 +1545,7 @@ static int kfd_ioctl_get_dmabuf_info(struct file *filep, 
	if (xcp_id >= 0)

		args->gpu_id = dmabuf_adev->kfd.dev->nodes[xcp_id]->id;

	else

		args->gpu_id = dmabuf_adev->kfd.dev->nodes[0]->id;

		args->gpu_id = dev->id;

	args->flags = flags;



	/* Copy metadata buffer to user mode */