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| author | Björn Töpel <bjorn.topel@gmail.com> | 2019-02-05 13:41:24 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-02-05 16:56:10 +0100 |
| commit | e8cb0167ae684ed2f73cd880c385b74ef2ae702e (patch) | |
| tree | 17940eac45c3c176c6eb1aee80a25f41f680541e /Documentation | |
| parent | MAINTAINERS: add RISC-V BPF JIT maintainer (diff) | |
| download | linux-e8cb0167ae684ed2f73cd880c385b74ef2ae702e.tar.xz linux-e8cb0167ae684ed2f73cd880c385b74ef2ae702e.zip | |
bpf, doc: add RISC-V JIT to BPF documentation
Update Documentation/networking/filter.txt and
Documentation/sysctl/net.txt to mention RISC-V.
Signed-off-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/filter.txt | 16 | ||||
| -rw-r--r-- | Documentation/sysctl/net.txt | 1 |
2 files changed, 10 insertions, 7 deletions
diff --git a/Documentation/networking/filter.txt b/Documentation/networking/filter.txt index 01603bc2eff1..b5e060edfc38 100644 --- a/Documentation/networking/filter.txt +++ b/Documentation/networking/filter.txt @@ -464,10 +464,11 @@ breakpoints: 0 1 JIT compiler ------------ -The Linux kernel has a built-in BPF JIT compiler for x86_64, SPARC, PowerPC, -ARM, ARM64, MIPS and s390 and can be enabled through CONFIG_BPF_JIT. The JIT -compiler is transparently invoked for each attached filter from user space -or for internal kernel users if it has been previously enabled by root: +The Linux kernel has a built-in BPF JIT compiler for x86_64, SPARC, +PowerPC, ARM, ARM64, MIPS, RISC-V and s390 and can be enabled through +CONFIG_BPF_JIT. The JIT compiler is transparently invoked for each +attached filter from user space or for internal kernel users if it has +been previously enabled by root: echo 1 > /proc/sys/net/core/bpf_jit_enable @@ -603,9 +604,10 @@ got from bpf_prog_create(), and 'ctx' the given context (e.g. skb pointer). All constraints and restrictions from bpf_check_classic() apply before a conversion to the new layout is being done behind the scenes! -Currently, the classic BPF format is being used for JITing on most 32-bit -architectures, whereas x86-64, aarch64, s390x, powerpc64, sparc64, arm32 perform -JIT compilation from eBPF instruction set. +Currently, the classic BPF format is being used for JITing on most +32-bit architectures, whereas x86-64, aarch64, s390x, powerpc64, +sparc64, arm32, riscv (RV64G) perform JIT compilation from eBPF +instruction set. Some core changes of the new internal format: diff --git a/Documentation/sysctl/net.txt b/Documentation/sysctl/net.txt index bc0680706870..2ae91d3873bb 100644 --- a/Documentation/sysctl/net.txt +++ b/Documentation/sysctl/net.txt @@ -52,6 +52,7 @@ two flavors of JITs, the newer eBPF JIT currently supported on: - sparc64 - mips64 - s390x + - riscv And the older cBPF JIT supported on the following archs: - mips |