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authorAndi Kleen <ak@suse.de>2005-05-20 14:27:58 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-20 15:48:21 -0700
commit607a16858397829806c5a4db999ce6daf327f98c (patch)
tree10f3568581880d54287382dcdfb02dcc5525df8e /Documentation/x86_64
parent4057923614e2868a865aa6c6e3bc53542c818d4d (diff)
[PATCH] x86_64: Fix 32bit system call restart
The test case at http://cvs.sourceforge.net/viewcvs.py/posixtest/posixtestsuite/conforman ce/interfaces/clock_nanosleep/1-5.c fails if it runs as a 32bit process on x86_86 machines. The root cause is the sub 32bit process fails to restart the syscall after it is interrupted by a signal. The syscall number of sys_restart_syscall in table sys_call_table is __NR_restart_syscall (219) while it's __NR_ia32_restart_syscall (0) in ia32_sys_call_table. When regs->rax==(unsigned long)-ERESTART_RESTARTBLOCK, function do_signal doesn't distinguish if the process is 64bit or 32bit, and always sets restart syscall number as __NR_restart_syscall (219). Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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