forked from Minki/linux
c6dbd3e5e6
This code puts an exception table entry on the PREFETCH instruction to overwrite it with a JMP.d8 when it triggers an exception. Except of course, our code is no longer writable, also SMP. Instead of fixing this broken mess, simply take it out. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/YZKQzUmeNuwyvZpk@hirez.programming.kicks-ass.net
74 lines
2.2 KiB
Makefile
74 lines
2.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for x86 specific library files.
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#
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# Produces uninteresting flaky coverage.
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KCOV_INSTRUMENT_delay.o := n
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# KCSAN uses udelay for introducing watchpoint delay; avoid recursion.
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KCSAN_SANITIZE_delay.o := n
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ifdef CONFIG_KCSAN
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# In case KCSAN+lockdep+ftrace are enabled, disable ftrace for delay.o to avoid
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# lockdep -> [other libs] -> KCSAN -> udelay -> ftrace -> lockdep recursion.
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CFLAGS_REMOVE_delay.o = $(CC_FLAGS_FTRACE)
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endif
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# Early boot use of cmdline; don't instrument it
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ifdef CONFIG_AMD_MEM_ENCRYPT
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KCOV_INSTRUMENT_cmdline.o := n
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KASAN_SANITIZE_cmdline.o := n
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KCSAN_SANITIZE_cmdline.o := n
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ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_cmdline.o = -pg
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endif
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CFLAGS_cmdline.o := -fno-stack-protector -fno-jump-tables
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endif
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inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk
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inat_tables_maps = $(srctree)/arch/x86/lib/x86-opcode-map.txt
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quiet_cmd_inat_tables = GEN $@
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cmd_inat_tables = $(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@
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$(obj)/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
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$(call cmd,inat_tables)
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$(obj)/inat.o: $(obj)/inat-tables.c
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clean-files := inat-tables.c
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obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o
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lib-y := delay.o misc.o cmdline.o cpu.o
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lib-y += usercopy_$(BITS).o usercopy.o getuser.o putuser.o
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lib-y += memcpy_$(BITS).o
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lib-y += pc-conf-reg.o
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lib-$(CONFIG_ARCH_HAS_COPY_MC) += copy_mc.o copy_mc_64.o
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lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o insn-eval.o
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lib-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
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lib-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
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lib-$(CONFIG_RETPOLINE) += retpoline.o
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obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o
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obj-y += iomem.o
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ifeq ($(CONFIG_X86_32),y)
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obj-y += atomic64_32.o
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lib-y += atomic64_cx8_32.o
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lib-y += checksum_32.o
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lib-y += strstr_32.o
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lib-y += string_32.o
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ifneq ($(CONFIG_X86_CMPXCHG64),y)
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lib-y += cmpxchg8b_emu.o atomic64_386_32.o
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endif
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else
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obj-y += iomap_copy_64.o
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lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o
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lib-y += clear_page_64.o copy_page_64.o
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lib-y += memmove_64.o memset_64.o
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lib-y += copy_user_64.o
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lib-y += cmpxchg16b_emu.o
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endif
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