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powerpc/bpf: Remove classical BPF support for PPC32
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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>
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chleroy authored and Fox Snowpatch committed Dec 16, 2020
1 parent a1d4aa5 commit 0e31225
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1 change: 0 additions & 1 deletion arch/powerpc/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -191,7 +191,6 @@ 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 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2)
select HAVE_CONTEXT_TRACKING if PPC64
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4 changes: 0 additions & 4 deletions arch/powerpc/net/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,4 @@
#
# Arch-specific network modules
#
ifdef CONFIG_PPC64
obj-$(CONFIG_BPF_JIT) += bpf_jit_comp64.o
else
obj-$(CONFIG_BPF_JIT) += bpf_jit_asm.o bpf_jit_comp.o
endif
139 changes: 0 additions & 139 deletions arch/powerpc/net/bpf_jit32.h

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226 changes: 0 additions & 226 deletions arch/powerpc/net/bpf_jit_asm.S

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