Changes in v1->v2: v1: https://lore.kernel.org/all/20250722173254.3879-1-puranjay@xxxxxxxxxx/ - Divided the patch into 3 patches (Yonghong) - Fixed a warning in what is now the second patch (kernel test robot) This set enables private stack in the arm64 JIT. The Jited programs use access the stack with the BPF FP (arm64 R25) and SP (arm64 SP). When using the private stack, BPF FP (arm64 R25) is set to point at the top of the private stack and SP is replaced with arm64 R27 and it points at the bottom of private stack. All relevant selftests are enabled in the 3rd patch and are passing for arm64. Note: This needs the fix in [1] to work properly. [1] https://lore.kernel.org/all/20250722133410.54161-2-puranjay@xxxxxxxxxx/ Puranjay Mohan (3): bpf: move bpf_jit_get_prog_name() to core.c bpf, arm64: JIT support for private stack selftests/bpf: enable private stack tests for arm64 arch/arm64/net/bpf_jit_comp.c | 133 ++++++++++++++++-- arch/x86/net/bpf_jit_comp.c | 9 +- include/linux/filter.h | 2 + kernel/bpf/core.c | 7 + .../bpf/progs/struct_ops_private_stack.c | 2 +- .../bpf/progs/struct_ops_private_stack_fail.c | 2 +- .../progs/struct_ops_private_stack_recur.c | 2 +- .../bpf/progs/verifier_private_stack.c | 89 +++++++++++- 8 files changed, 222 insertions(+), 24 deletions(-) -- 2.47.3
