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Song Liu 33c9805860 bpf: Introduce bpf_jit_binary_pack_[alloc|finalize|free] 
This is the jit binary allocator built on top of bpf_prog_pack.

bpf_prog_pack allocates RO memory, which cannot be used directly by the
JIT engine. Therefore, a temporary rw buffer is allocated for the JIT
engine. Once JIT is done, bpf_jit_binary_pack_finalize is used to copy
the program to the RO memory.

bpf_jit_binary_pack_alloc reserves 16 bytes of extra space for illegal
instructions, which is small than the 128 bytes space reserved by
bpf_jit_binary_alloc. This change is necessary for bpf_jit_binary_hdr
to find the correct header. Also, flag use_bpf_prog_pack is added to
differentiate a program allocated by bpf_jit_binary_pack_alloc.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220204185742.271030-9-song@kernel.org
2022-02-07 18:13:01 -08:00
..
preload
bpf: Drop libbpf, libelf, libz dependency from bpf preload.
2022-02-01 23:56:18 +01:00
arraymap.c
bpf: generalise tail call map compatibility check
2022-01-21 14:14:03 -08:00
bloom_filter.c
bpf: Add missing map_get_next_key method to bloom filter map.
2021-12-29 09:38:31 -08:00
bpf_inode_storage.c
bpf: Allow bpf_local_storage to be used by sleepable programs
2021-12-29 17:54:40 -08:00
bpf_iter.c
bpf: Add support for bpf iterator programs to use sleepable helpers
2022-01-24 19:55:40 -08:00
bpf_local_storage.c
bpf: Allow bpf_local_storage to be used by sleepable programs
2021-12-29 17:54:40 -08:00
bpf_lru_list.c
bpf_lru_list: Read double-checked variable once without lock
2021-02-10 15:54:26 -08:00
bpf_lru_list.h
bpf: Fix a typo "inacitve" -> "inactive"
2020-04-06 21:54:10 +02:00
bpf_lsm.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-06-17 11:54:56 -07:00
bpf_struct_ops_types.h
bpf: Add dummy BPF STRUCT_OPS for test purpose
2021-11-01 14:10:00 -07:00
bpf_struct_ops.c
bpf: Rename btf_member accessors.
2021-12-02 11:18:34 -08:00
bpf_task_storage.c
bpf: Allow bpf_local_storage to be used by sleepable programs
2021-12-29 17:54:40 -08:00
btf.c
bpf: Implement bpf_core_types_are_compat().
2022-02-04 11:26:26 -08:00
cgroup.c
cgroup/bpf: fast path skb BPF filtering
2022-01-27 10:15:00 -08:00
core.c
bpf: Introduce bpf_jit_binary_pack_[alloc|finalize|free]
2022-02-07 18:13:01 -08:00
cpumap.c
bpf: generalise tail call map compatibility check
2022-01-21 14:14:03 -08:00
devmap.c
bpf: generalise tail call map compatibility check
2022-01-21 14:14:03 -08:00
disasm.c
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
disasm.h
bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause
2021-09-02 14:49:23 +02:00
dispatcher.c
bpf: Remove bpf_image tree
2020-03-13 12:49:52 -07:00
hashtab.c
bpf: Replace callers of BPF_CAST_CALL with proper function typedef
2021-09-28 16:27:18 -07:00
helpers.c
bpf: make bpf_copy_from_user_task() gpl only
2022-01-31 12:44:37 -08:00
inode.c
bpf: Fix mount source show for bpffs
2022-01-11 10:48:17 +01:00
Kconfig
bpf: Disallow unprivileged bpf by default
2021-11-01 17:06:47 +01:00
local_storage.c
bpf: Use struct_size() helper
2021-12-21 15:35:48 -08:00
lpm_trie.c
bpf: Fix typo in a comment in bpf lpm_trie.
2021-12-30 18:42:34 -08:00
Makefile
bpf: Prepare relo_core.c for kernel duty.
2021-12-02 11:18:34 -08:00
map_in_map.c
bpf: Remember BTF of inner maps.
2021-07-15 22:31:10 +02:00
map_in_map.h
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
map_iter.c
bpf: Introduce MEM_RDONLY flag
2021-12-18 13:27:41 -08:00
mmap_unlock_work.h
bpf: Introduce helper bpf_find_vma
2021-11-07 11:54:51 -08:00
net_namespace.c
net: Add includes masked by netdevice.h including uapi/bpf.h
2021-12-29 20:03:05 -08:00
offload.c
bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
2020-02-17 16:53:49 +01:00
percpu_freelist.c
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
percpu_freelist.h
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
prog_iter.c
bpf: Refactor bpf_iter_reg to have separate seq_info member
2020-07-25 20:16:32 -07:00
queue_stack_maps.c
bpf: Eliminate rlimit-based memory accounting for queue_stack_maps maps
2020-12-02 18:32:46 -08:00
reuseport_array.c
bpf: Use struct_size() helper
2021-12-21 15:35:48 -08:00
ringbuf.c
bpf: Add MEM_RDONLY for helper args that are pointers to rdonly mem.
2021-12-18 13:27:41 -08:00
stackmap.c
bpf: Introduce btf_tracing_ids
2021-11-12 10:19:09 -08:00
syscall.c
bpf: generalise tail call map compatibility check
2022-01-21 14:14:03 -08:00
sysfs_btf.c
bpf: Load and verify kernel module BTFs
2020-11-10 15:25:53 -08:00
task_iter.c
bpf: Introduce btf_tracing_ids
2021-11-12 10:19:09 -08:00
tnum.c
bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul
2021-06-01 13:34:15 +02:00
trampoline.c
bpf: Use bytes instead of pages for bpf_jit_[charge|uncharge]_modmem
2022-02-07 18:13:01 -08:00
verifier.c
bpf: Use prog->jited_len in bpf_prog_ksym_set_addr()
2022-02-07 18:13:01 -08:00