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2095de9f03
On newer kernel's (> 5.13), KFD & DRM drivers will only allow the /dev/renderD* file descriptors that were used during the CRIU_RESTORE ioctl when calling mmap for the vma's. During restore, after opening /dev/renderD*, amdgpu_plugin keeps the FDs opened and instead returns a copy of the FDs to CRIU. The same FDs are then returned during the UPDATE_VMAMAP hooks so that they can be used by CRIU to call mmap. Duplicated FDs created using dup are references to the same struct file inside the kernel so they are also allowed to mmap. To prevent the opened FDs inside amdgpu_plugin from conflicting with FDs used by the target restore application, we make sure that the lowest-numbered FD that amdgpu_plugin will use is greater than the highest-numbered FD that is used by the target application. Signed-off-by: David Yat Sin <david.yatsin@amd.com> |
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| .. | ||
| tests | ||
| amdgpu_plugin.c | ||
| amdgpu_plugin_topology.c | ||
| amdgpu_plugin_topology.h | ||
| criu-amdgpu.proto | ||
| kfd_ioctl.h | ||
| Makefile | ||