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f2e1e156c0
This adds support for eBPF JIT for 32 bit targets and significantly improves correctness. Signed-off-by: Felix Fietkau <nbd@nbd.name>
62 lines
2.0 KiB
Diff
62 lines
2.0 KiB
Diff
From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
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Date: Tue, 5 Oct 2021 18:54:07 +0200
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Subject: [PATCH] mips: bpf: Enable eBPF JITs
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This patch enables the new eBPF JITs for 32-bit and 64-bit MIPS. It also
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disables the old cBPF JIT to so cBPF programs are converted to use the
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new JIT.
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Workarounds for R4000 CPU errata are not implemented by the JIT, so the
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JIT is disabled if any of those workarounds are configured.
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Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
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---
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--- a/MAINTAINERS
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+++ b/MAINTAINERS
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@@ -3294,6 +3294,7 @@ S: Supported
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F: arch/arm64/net/
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BPF JIT for MIPS (32-BIT AND 64-BIT)
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+M: Johan Almbladh <johan.almbladh@anyfinetworks.com>
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M: Paul Burton <paulburton@kernel.org>
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L: netdev@vger.kernel.org
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L: bpf@vger.kernel.org
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--- a/arch/mips/Kconfig
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+++ b/arch/mips/Kconfig
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@@ -49,7 +49,6 @@ config MIPS
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select HAVE_ARCH_TRACEHOOK
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
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select HAVE_ASM_MODVERSIONS
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- select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
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select HAVE_CONTEXT_TRACKING
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select HAVE_TIF_NOHZ
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select HAVE_C_RECORDMCOUNT
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@@ -57,7 +56,10 @@ config MIPS
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_DMA_CONTIGUOUS
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select HAVE_DYNAMIC_FTRACE
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- select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
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+ select HAVE_EBPF_JIT if !CPU_MICROMIPS && \
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+ !CPU_DADDI_WORKAROUNDS && \
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+ !CPU_R4000_WORKAROUNDS && \
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+ !CPU_R4400_WORKAROUNDS
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select HAVE_EXIT_THREAD
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select HAVE_FAST_GUP
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select HAVE_FTRACE_MCOUNT_RECORD
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--- a/arch/mips/net/Makefile
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+++ b/arch/mips/net/Makefile
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@@ -2,9 +2,10 @@
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# MIPS networking code
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obj-$(CONFIG_MIPS_CBPF_JIT) += bpf_jit.o bpf_jit_asm.o
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+obj-$(CONFIG_MIPS_EBPF_JIT) += bpf_jit_comp.o
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ifeq ($(CONFIG_32BIT),y)
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- obj-$(CONFIG_MIPS_EBPF_JIT) += bpf_jit_comp.o bpf_jit_comp32.o
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+ obj-$(CONFIG_MIPS_EBPF_JIT) += bpf_jit_comp32.o
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else
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- obj-$(CONFIG_MIPS_EBPF_JIT) += ebpf_jit.o
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+ obj-$(CONFIG_MIPS_EBPF_JIT) += bpf_jit_comp64.o
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endif
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