mirror of https://gitee.com/openkylin/linux.git
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>
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|---|---|---|
| .. | ||
| asm | ||
| shared/sysdep | ||
| Makefile | ||
| atomic64_cx8_32.S | ||
| bug.c | ||
| bugs.c | ||
| checksum.S | ||
| delay.c | ||
| elfcore.c | ||
| fault.c | ||
| ksyms.c | ||
| ldt.c | ||
| ptrace.c | ||
| ptrace_user.c | ||
| setjmp.S | ||
| signal.c | ||
| stub.S | ||
| stub_segv.c | ||
| sys_call_table.S | ||
| syscalls.c | ||
| sysrq.c | ||
| tls.c | ||
| user-offsets.c | ||