57d8e02e3c
This adds support for 64 bit atomic operations on 32 bit UML systems. XFS
needs them since 2.6.38.
$ make ARCH=um SUBARCH=i386
...
LD .tmp_vmlinux1
fs/built-in.o: In function `xlog_regrant_reserve_log_space':
xfs_log.c:(.text+0xd8584): undefined reference to `atomic64_read_386'
xfs_log.c:(.text+0xd85ac): undefined reference to `cmpxchg8b_emu'
...
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=32812
Reported-by: Martin Walch <walch.martin@web.de>
Tested-by: Martin Walch <walch.martin@web.de>
Cc: Martin Walch <walch.martin@web.de>
Cc: <stable@kernel.org> [2.6.38.x 084189a: um: disable CONFIG_CMPXCHG_LOCAL]
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
23 lines
668 B
Makefile
23 lines
668 B
Makefile
#
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# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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#
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obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
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ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \
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sys_call_table.o tls.o atomic64_cx8_32.o
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obj-$(CONFIG_BINFMT_ELF) += elfcore.o
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subarch-obj-y = lib/semaphore_32.o lib/string_32.o
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subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o
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subarch-obj-$(CONFIG_MODULES) += kernel/module.o
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USER_OBJS := bugs.o ptrace_user.o fault.o
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USER_OBJS += user-offsets.s
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extra-y += user-offsets.s
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UNPROFILE_OBJS := stub_segv.o
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CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
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include arch/um/scripts/Makefile.rules
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