Thread (52 messages) 52 messages, 11 authors, 2024-04-22

[PATCH v4 15/15] bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of

From: Mike Rapoport <rppt@kernel.org>
Date: 2024-04-11 16:04:21
Also in: bpf, linux-arch, linux-arm-kernel, linux-mips, linux-mm, linux-modules, linux-riscv, linux-s390, linux-trace-kernel, lkml, loongarch, netdev, sparclinux
Subsystem: bpf [general] (safe dynamic programs and tools), the rest · Maintainers: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds

From: "Mike Rapoport (IBM)" <rppt@kernel.org>

BPF just-in-time compiler depended on CONFIG_MODULES because it used
module_alloc() to allocate memory for the generated code.

Since code allocations are now implemented with execmem, drop dependency of
CONFIG_BPF_JIT on CONFIG_MODULES and make it select CONFIG_EXECMEM.

Suggested-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
 kernel/bpf/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig
index bc25f5098a25..f999e4e0b344 100644
--- a/kernel/bpf/Kconfig
+++ b/kernel/bpf/Kconfig
@@ -43,7 +43,7 @@ config BPF_JIT
 	bool "Enable BPF Just In Time compiler"
 	depends on BPF
 	depends on HAVE_CBPF_JIT || HAVE_EBPF_JIT
-	depends on MODULES
+	select EXECMEM
 	help
 	  BPF programs are normally handled by a BPF interpreter. This option
 	  allows the kernel to generate native code when a program is loaded
-- 
2.43.0
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