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gpu: nvgpu: bind sched domains as fds

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Replace id-based lookup with fd-based lookup when binding a TSG to a
domain. The device node based domain interface naturally provides access
control; this way userspace tools can limit which uid/gid can access
each domain.

Also, explicitly disallow binding channels to a TSG that has no runlist
domain yet. Normally a TSG is in the default domain if nothing else has
been specified, but the default domain can be deleted.

Jira NVGPU-6788

Change-Id: I2af96dfc002367d894eaf0c175006332f790c27f
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2651165
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Konsta Hölttä
2022-02-23 12:10:50 +02:00
committed by mobile promotions
parent 3a64fdefc4
commit 2a8914619d
4 changed files with 42 additions and 18 deletions
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6
include/uapi/linux/nvgpu.h
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@@ -1,7 +1,7 @@
/*
* NVGPU Public Interface Header
*
* Copyright (c) 2011-2021, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2022, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -42,7 +42,9 @@ struct nvgpu_tsg_bind_channel_ex_args {
struct nvgpu_tsg_bind_scheduling_domain_args {
/* in: id of the domain this tsg will be bound to */
__u64 domain_id;
__s32 domain_fd;
/* Must be set to 0 */
__s32 reserved0;
/* Must be set to 0 */
__u64 reserved[3];
};