Merge branch 'enable-the-inline-of-kptr_xchg-for-arm64'

Hou Tao says:

====================
Enable the inline of kptr_xchg for arm64

From: Hou Tao <houtao1@huawei.com>

Hi,

The patch set is just a follow-up for "bpf: inline bpf_kptr_xchg()". It
enables the inline of bpf_kptr_xchg() and kptr_xchg_inline test for
arm64.

Please see individual patches for more details. And comments are always
welcome.
====================

Link: https://lore.kernel.org/r/20240119102529.99581-1-houtao@huaweicloud.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

arch/arm64/net/bpf_jit_comp.c

@@ -2305,3 +2305,8 @@ int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type poke_type,
 
 	return ret;
 }
+
+bool bpf_jit_supports_ptr_xchg(void)
+{
+	return true;
+}

tools/testing/selftests/bpf/prog_tests/kptr_xchg_inline.c

@@ -13,7 +13,7 @@ void test_kptr_xchg_inline(void)
 	unsigned int cnt;
 	int err;
 
-#if !defined(__x86_64__)
+#if !(defined(__x86_64__) || defined(__aarch64__))
 	test__skip();
 	return;
 #endif