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gpu: nvgpu: Use conftest for VM flags

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Using kernel version for detecting kernel changes does not work for some
3rd party Linux distributions that back port kernel changes to their
kernel. The conftest script has a test for detecting if the 'vm_flags'
variable can be set directly or if the appropriate helper functions must
be used. Update the NVGPU driver to use the definition provided by
conftest to determine if the 'vm_flags' variable can set set directly or
not.

Bug 4014315

Change-Id: I6ebfbfa622259e15560152bf70315451a52fba81
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/3164870
(cherry picked from commit 2c9097363d29a235eb5c41530cdd3896694599d2)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/3172302
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
This commit is contained in:
Jon Hunter
2024-05-23 11:43:24 +01:00
committed by mobile promotions
parent 6d8106348a
commit 10b813a25d
3 changed files with 20 additions and 34 deletions
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6
drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
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@@ -1,6 +1,10 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2011-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#if defined(CONFIG_NVIDIA_CONFTEST)
#include <nvidia/conftest.h>
#endif
#include <linux/version.h>
#include <linux/uaccess.h>
#include <linux/cdev.h>
@@ -2853,7 +2857,7 @@ int gk20a_ctrl_dev_mmap(struct file *filp, struct vm_area_struct *vma)
nvgpu_mutex_acquire(&l->ctrl_privs_lock);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 3, 0)
#if defined(NV_VM_AREA_STRUCT_HAS_CONST_VM_FLAGS) /* Linux v6.3 */
vm_flags_set(vma, VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_NORESERVE |
VM_DONTDUMP | VM_PFNMAP);
#else