2 Commits

Author	SHA1	Message	Date
scottl	cd3ad1ccc7	gpu: nvgpu: fix REMAP android build failure ... Rework nvgpu_vm_remap_os_buf structure initialization to avoid android/clang build issues with the use of a single pair of {} to initialize certain structures. The os-dependent nvgpu_vm_remap_os_buf_get() routine now does a memset of the structure prior to initializing its contents. Jira NVGPU-6804 Change-Id: I08682c6ab7b8324a605a56ed660dea5bea11d16b Signed-off-by: scottl <scottl@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2553193 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit	2021-07-03 02:05:25 -07:00
scottl	3cd256b344	gpu: nvgpu: add linux REMAP support ... Add REMAP ioctl and accompanying support to the linux nvgpu driver. REMAP support provides per-page control over sparse VM areas using the concept of a virtual memory pool. The REMAP ioctl accepts a list of operations (each a map or unmap) that modify the VM area pages tracked by the virtual mmemory pool. Inclusion of REMAP support in the nvgpu build is controlled by the new CONFIG_NVGPU_REMAP flag. This flag is enabled by default for linux builds. A new NVGPU_GPU_FLAGS_SUPPORT_REMAP characteristics flag is added for use in detecting when REMAP support is available. When a VM allocation tagged with NVGPU_VM_AREA_ALLOC_SPARSE is made the base virtual memory pool resources are allocated. Per-page resources are later allocated when the NVGPU_AS_IOCTL_REMAP ioctl is issued. All REMAP resources are released when the corresponding VM area is freed. Jira NVGPU-6804 Change-Id: I1f2cdc0c06c1698a62640c1c6fbcb2f9db24a0bc Signed-off-by: scottl <scottl@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2542178 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>	2021-06-28 22:39:06 -07:00