powerpc/bpf: Remove classical BPF support for PPC32

At the time being, PPC32 has Classical BPF support. The test_bpf module exhibits some failure: test_bpf: torvalds#298 LD_IND byte frag jited:1 ret 202 != 66 FAIL (1 times) test_bpf: torvalds#299 LD_IND halfword frag jited:1 ret 51958 != 17220 FAIL (1 times) test_bpf: torvalds#301 LD_IND halfword mixed head/frag jited:1 ret 51958 != 1305 FAIL (1 times) test_bpf: torvalds#303 LD_ABS byte frag jited:1 ret 202 != 66 FAIL (1 times) test_bpf: torvalds#304 LD_ABS halfword frag jited:1 ret 51958 != 17220 FAIL (1 times) test_bpf: torvalds#306 LD_ABS halfword mixed head/frag jited:1 ret 51958 != 1305 FAIL (1 times) test_bpf: Summary: 371 PASSED, 7 FAILED, [119/366 JIT'ed] Fixing this is not worth the effort. Instead, remove support for classical BPF and prepare for adding Extended BPF support instead. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/fbc3e4fcc9c8f6131d6c705212530b2aa50149ee.1616430991.git.christophe.leroy@csgroup.eu
linuxppc · Apr 3, 2021 · 6700dc4 · 6700dc4
1 parent c465077
commit 6700dc4
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diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
@@ -195,7 +195,6 @@ config PPC
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_ASM_MODVERSIONS
 	select HAVE_C_RECORDMCOUNT
-	select HAVE_CBPF_JIT			if !PPC64
 	select HAVE_STACKPROTECTOR		if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)
 	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2)
 	select HAVE_CONTEXT_TRACKING		if PPC64

diff --git a/arch/powerpc/net/Makefile b/arch/powerpc/net/Makefile
@@ -2,8 +2,4 @@
 #
 # Arch-specific network modules
 #
-ifdef CONFIG_PPC64
 obj-$(CONFIG_BPF_JIT) += bpf_jit_comp64.o
-else
-obj-$(CONFIG_BPF_JIT) += bpf_jit_asm.o bpf_jit_comp.o
-endif
diff --git a/arch/powerpc/net/bpf_jit32.h b/arch/powerpc/net/bpf_jit32.h
diff --git a/arch/powerpc/net/bpf_jit_asm.S b/arch/powerpc/net/bpf_jit_asm.S