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libbpf: fix u64-to-pointer cast on 32-bit arches

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It's been reported that (void *)map->map_extra is causing compilation
warnings on 32-bit architectures. It's easy enough to fix this by
casting to long first.

Fixes: 79ff13e991 ("libbpf: Add support for bpf_arena.")
Reported-by: Ryan Eatmon <reatmon@ti.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Message-ID: <20240319215143.1279312-1-andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko 2024-03-19 14:51:43 -07:00 committed by Alexei Starovoitov
parent 7ded842b35
commit 5ab8cb89db
1 changed files with 2 additions and 2 deletions
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4
tools/lib/bpf/libbpf.c
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@ -5352,8 +5352,8 @@ bpf_object__create_maps(struct bpf_object *obj)
goto err_out;
}
if (map->def.type == BPF_MAP_TYPE_ARENA) {
map->mmaped = mmap((void *)map->map_extra, bpf_map_mmap_sz(map),
PROT_READ | PROT_WRITE,
map->mmaped = mmap((void *)(long)map->map_extra,
bpf_map_mmap_sz(map), PROT_READ | PROT_WRITE,
map->map_extra ? MAP_SHARED | MAP_FIXED : MAP_SHARED,
map->fd, 0);
if (map->mmaped == MAP_FAILED) {