2021-09-24 10:00:24

by Lorenz Bauer

Subject: [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT

Expose the maximum amount of useable memory from the sparcv JIT.

Signed-off-by: Lorenz Bauer <[email protected]>
---
arch/riscv/net/bpf_jit_core.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index fed86f42dfbe..0fee2cbaaf53 100644
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c
@@ -166,6 +166,11 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
return prog;
}

+u64 bpf_jit_alloc_exec_limit(void)
+{
+ return BPF_JIT_REGION_SIZE;
+}
+
void *bpf_jit_alloc_exec(unsigned long size)
{
return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
--
2.30.2

2021-09-24 15:35:19

by Luke Nelson

Subject: Re: [PATCH bpf-next 1/4] bpf: define bpf_jit_alloc_exec_limit for riscv JIT

> Expose the maximum amount of useable memory from the sparcv JIT.

sparcv -> riscv?

Otherwise lgtm!

Acked-by: Luke Nelson <[email protected]>