diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/net/bpf_jit_comp64.c | 10 | ||||
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 8 |
2 files changed, 14 insertions, 4 deletions
diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 74efe4b13..151031e97 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -2128,7 +2128,15 @@ bool bpf_jit_supports_ptr_xchg(void) bool bpf_jit_supports_arena(void) { - return true; + /* + * The arena range tree uses kmalloc_nolock(), which needs + * cmpxchg128, provided by ZACAS on riscv. + */ +#ifdef system_has_cmpxchg128 + return system_has_cmpxchg128(); +#else + return false; +#endif } bool bpf_jit_supports_insn(struct bpf_insn *insn, bool in_arena) diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 1a9fb530a..2853e8779 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -13,6 +13,7 @@ #include <linux/bpf_verifier.h> #include <linux/memory.h> #include <linux/sort.h> +#include <linux/execmem.h> #include <asm/extable.h> #include <asm/ftrace.h> #include <asm/set_memory.h> @@ -3818,15 +3819,16 @@ int arch_bpf_trampoline_size(const struct btf_func_model *m, u32 flags, * * We cannot use kvmalloc here, because we need image to be in * module memory range. - * Since it must be writable use bpf_jit_alloc_exec_rw(). + * Since it must be writable use execmem_alloc(EXECMEM_MODULE_DATA) + * that returns writable memory in the module address space. */ - image = bpf_jit_alloc_exec_rw(PAGE_SIZE); + image = execmem_alloc(EXECMEM_MODULE_DATA, PAGE_SIZE); if (!image) return -ENOMEM; ret = __arch_prepare_bpf_trampoline(&im, image, image + PAGE_SIZE, image, m, flags, tnodes, func_addr); - bpf_jit_free_exec(image); + execmem_free(image); return ret; } |