riscv: bpf: Move bpf_jit_alloc_exec() and bpf_jit_free_exec() to core

We will drop the executable permissions of the code pages from the
mapping at allocation time soon. Move bpf_jit_alloc_exec() and
bpf_jit_free_exec() to bpf_jit_core.c so that they can be shared by
both RV64I and RV32I.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c
index b44ff52..87e3bf5 100644 (file)
--- a/arch/riscv/net/bpf_jit_comp64.c
+++ b/arch/riscv/net/bpf_jit_comp64.c
@@ -1148,16 +1148,3 @@ void bpf_jit_build_epilogue(struct rv_jit_context *ctx)
 {
        __build_epilogue(false, ctx);
 }
-
-void *bpf_jit_alloc_exec(unsigned long size)
-{
-       return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
-                                   BPF_JIT_REGION_END, GFP_KERNEL,
-                                   PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
-                                   __builtin_return_address(0));
-}
-
-void bpf_jit_free_exec(void *addr)
-{
-       return vfree(addr);
-}

diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index 3630d44..d8da819 100644 (file)
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c
@@ -164,3 +164,16 @@ out:
                                           tmp : orig_prog);
        return prog;
 }
+
+void *bpf_jit_alloc_exec(unsigned long size)
+{
+       return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
+                                   BPF_JIT_REGION_END, GFP_KERNEL,
+                                   PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
+                                   __builtin_return_address(0));
+}
+
+void bpf_jit_free_exec(void *addr)
+{
+       return vfree(addr);
+}