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Daniel Borkmann 6c7c8badfe bpf, x86: Generalize and extend bpf_arch_text_poke for direct jumps 
[upstream commit 4b3da77b72ad6b3c48c6fe4a395ace7db39a12c5]

Add BPF_MOD_{NOP_TO_JUMP,JUMP_TO_JUMP,JUMP_TO_NOP} patching for x86
JIT in order to be able to patch direct jumps or nop them out. We need
this facility in order to patch tail call jumps and in later work also
BPF static keys.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/aa4784196a8e5e985af4b30a4fe5336bce6e9643.1574452833.git.daniel@iogearbox.net
 		2022-08-30 11:33:19 +08:00
..
alpha net: retrieve netns cookie via getsocketopt 2022-03-02 10:48:06 +08:00
arc arc: kernel: Return -EFAULT if copy_to_user() fails 2021-05-20 16:07:08 +08:00
arm bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
arm64 bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
c6x Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
csky csky: change a Kconfig symbol name to fix e1000 build error 2021-05-20 16:07:15 +08:00
h8300 h8300: fix PREEMPTION build, TI_PRE_COUNT undefined 2021-04-12 12:52:05 +08:00
hexagon hexagon: define ioremap_uc 2021-03-16 16:27:29 +08:00
ia64 ia64: fix discontig.c section mismatches 2021-05-20 16:07:15 +08:00
m68k m68k: mvme147,mvme16x: Don't wipe PCC timer config bits 2021-05-20 16:07:48 +08:00
microblaze Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
mips bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
nds32 nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff 2021-05-20 16:06:56 +08:00
nios2 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
openrisc openrisc: Fix issue with get_user for 64-bit values 2021-03-16 16:39:36 +08:00
parisc net: retrieve netns cookie via getsocketopt 2022-03-02 10:48:06 +08:00
powerpc bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
riscv bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
s390 bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
sh sh: dma: fix kconfig dependency for G2_DMA 2021-04-12 12:51:39 +08:00
sparc bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2022-08-30 11:33:16 +08:00
um um: mm: check more comprehensively for stub changes 2021-04-12 12:52:40 +08:00
unicore32 Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
x86 bpf, x86: Generalize and extend bpf_arch_text_poke for direct jumps 2022-08-30 11:33:19 +08:00
xtensa xtensa: move coprocessor_flush to the .text section 2021-05-20 16:06:49 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS" 2021-03-16 16:43:47 +08:00