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Xu Kuohai efc9909fdc bpf, arm64: Add bpf trampoline for arm64 
This is arm64 version of commit fec56f5890 ("bpf: Introduce BPF
trampoline"). A bpf trampoline converts native calling convention to bpf
calling convention and is used to implement various bpf features, such
as fentry, fexit, fmod_ret and struct_ops.

This patch does essentially the same thing that bpf trampoline does on x86.

Tested on Raspberry Pi 4B and qemu:

 #18 /1     bpf_tcp_ca/dctcp:OK
 #18 /2     bpf_tcp_ca/cubic:OK
 #18 /3     bpf_tcp_ca/invalid_license:OK
 #18 /4     bpf_tcp_ca/dctcp_fallback:OK
 #18 /5     bpf_tcp_ca/rel_setsockopt:OK
 #18        bpf_tcp_ca:OK
 #51 /1     dummy_st_ops/dummy_st_ops_attach:OK
 #51 /2     dummy_st_ops/dummy_init_ret_value:OK
 #51 /3     dummy_st_ops/dummy_init_ptr_arg:OK
 #51 /4     dummy_st_ops/dummy_multiple_args:OK
 #51        dummy_st_ops:OK
 #57 /1     fexit_bpf2bpf/target_no_callees:OK
 #57 /2     fexit_bpf2bpf/target_yes_callees:OK
 #57 /3     fexit_bpf2bpf/func_replace:OK
 #57 /4     fexit_bpf2bpf/func_replace_verify:OK
 #57 /5     fexit_bpf2bpf/func_sockmap_update:OK
 #57 /6     fexit_bpf2bpf/func_replace_return_code:OK
 #57 /7     fexit_bpf2bpf/func_map_prog_compatibility:OK
 #57 /8     fexit_bpf2bpf/func_replace_multi:OK
 #57 /9     fexit_bpf2bpf/fmod_ret_freplace:OK
 #57        fexit_bpf2bpf:OK
 #237       xdp_bpf2bpf:OK

Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20220711150823.2128542-5-xukuohai@huawei.com
 		2022-07-11 21:08:08 +02:00
..
alpha Cleanups (and one fix) around struct mount handling. 2022-06-04 19:00:05 -07:00
arc This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
arm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-07-07 12:07:37 -07:00
arm64 bpf, arm64: Add bpf trampoline for arm64 2022-07-11 21:08:08 +02:00
csky This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
hexagon
…
ia64 Bitmap patches for 5.19-rc1 2022-06-04 14:04:27 -07:00
loongarch LoongArch: Make compute_return_era() return void 2022-06-25 18:06:07 +08:00
m68k This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
microblaze This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
mips mips: lantiq: Add missing of_node_put() in irq.c 2022-06-21 22:34:03 +02:00
nios2 This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
openrisc openrisc: unwinder: Fix grammar issue in comment 2022-06-28 17:31:24 +09:00
parisc parisc: Fix vDSO signal breakage on 32-bit kernel 2022-07-02 18:36:58 +02:00
powerpc powerpc/memhotplug: Add add_pages override for PPC 2022-06-29 20:43:16 +10:00
riscv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-06-30 16:31:00 -07:00
s390 s390/qdio: Fix spelling mistake 2022-06-30 19:40:36 +02:00
sh This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
sparc This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
um um: virt-pci: set device ready in probe() 2022-06-10 20:38:06 -04:00
x86 bpf: Remove is_valid_bpf_tramp_flags() 2022-07-11 21:04:58 +02:00
xtensa xtensa: change '.bss' to '.section .bss' 2022-06-20 02:50:34 -07:00
.gitignore
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Kconfig A set of objtool fixes: 2022-06-05 09:45:27 -07:00