[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240325155434.65589-1-puranjay12@gmail.com>
Date: Mon, 25 Mar 2024 15:54:32 +0000
From: Puranjay Mohan <puranjay12@...il.com>
To: Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <martin.lau@...ux.dev>,
Eduard Zingerman <eddyz87@...il.com>,
Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>,
Hao Luo <haoluo@...gle.com>,
Jiri Olsa <jolsa@...nel.org>,
Björn Töpel <bjorn@...nel.org>,
Luke Nelson <luke.r.nels@...il.com>,
Xi Wang <xi.wang@...il.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
bpf@...r.kernel.org,
linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Pu Lehui <pulehui@...weicloud.com>
Cc: puranjay12@...il.com
Subject: [PATCH bpf-next v2 0/2] bpf,riscv: Add support for BPF Arena
Changes in V2
V1: https://lore.kernel.org/bpf/20240323154652.54572-1-puranjay12@gmail.com/
- Used S7 in place of S11 for storing the kernel_vm_start
- Used 17 in place of 16 for DONT_CLEAR marker
- Remove an unused variable
- Removed some misleading information from the commit message.
This series adds the support for PROBE_MEM32 and bpf_addr_space_cast
instructions to the RISCV BPF JIT. These two instructions allow the
enablement of BPF Arena.
All arena related selftests are passing:
root@...tester:~/bpf# uname -p
riscv64
root@...tester:~/bpf# ./test_progs -a "*arena*"
#3/1 arena_htab/arena_htab_llvm:OK
#3/2 arena_htab/arena_htab_asm:OK
#3 arena_htab:OK
#4/1 arena_list/arena_list_1:OK
#4/2 arena_list/arena_list_1000:OK
#4 arena_list:OK
#434/1 verifier_arena/basic_alloc1:OK
#434/2 verifier_arena/basic_alloc2:OK
#434/3 verifier_arena/basic_alloc3:OK
#434/4 verifier_arena/iter_maps1:OK
#434/5 verifier_arena/iter_maps2:OK
#434/6 verifier_arena/iter_maps3:OK
#434 verifier_arena:OK
Summary: 3/10 PASSED, 0 SKIPPED, 0 FAILED
This needs the patch[1] that adds the insn_is_cast_user() helper to build.
It also needs the following patches/commits [2][3] to work correctly.
[1] https://lore.kernel.org/bpf/20240324183226.29674-1-puranjay12@gmail.com/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=f7f5d1808b1b66935a24dd796dd1a0612ca9c147
[3] https://lore.kernel.org/bpf/20240324103306.2202954-1-pulehui@huaweicloud.com/
Puranjay Mohan (2):
bpf,riscv: Implement PROBE_MEM32 pseudo instructions
bpf,riscv: Implement bpf_addr_space_cast instruction
arch/riscv/net/bpf_jit.h | 2 +
arch/riscv/net/bpf_jit_comp64.c | 207 +++++++++++++++++++++++++++++++-
arch/riscv/net/bpf_jit_core.c | 2 +
3 files changed, 208 insertions(+), 3 deletions(-)
--
2.40.1
Powered by blists - more mailing lists