- 22 5月, 2012 1 次提交
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由 Al Viro 提交于
guts of saved_sigmask-based sigsuspend/rt_sigsuspend. Takes kernel sigset_t *. Open-coded instances replaced with calling it. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 14 3月, 2012 1 次提交
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由 H. Peter Anvin 提交于
Fix a stray ! which flipped the sense if we were generating a signal frame for ia32 vs. x32. Introduced in: e7084fd5 x32: Switch to a 64-bit clock_t Reported-by: NH. J. Lu <hjl.tools@gmail.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: Gregory M. Lueck <gregory.m.lueck@intel.com> Link: http://lkml.kernel.org/r/1329696488-16970-1-git-send-email-hpa@zytor.com
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- 13 3月, 2012 1 次提交
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由 Srikar Dronamraju 提交于
There are precedences of trap number being referred to as trap_nr. However thread struct refers trap number as trap_no. Change it to trap_nr. Also use enum instead of left-over literals for trap values. This is pure cleanup, no functional change intended. Suggested-by: NIngo Molnar <mingo@eltu.hu> Signed-off-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com> Cc: Linux-mm <linux-mm@kvack.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120312092555.5379.942.sendpatchset@srdronam.in.ibm.com [ Fixed the math-emu build ] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 06 3月, 2012 1 次提交
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由 H. Peter Anvin 提交于
clock_t is used mainly to give the number of jiffies a certain process has burned. It is entirely feasible for a long-running process to consume more than 2^32 jiffies especially in a multiprocess system. As such, switch to a 64-bit clock_t for x32, just as we already switched to a 64-bit time_t. clock_t is only used in a handful of places, and as such it is really not a very significant change. The one that has the biggest impact is in struct siginfo, but since the *size* of struct siginfo doesn't change (it is padded to the hilt) it is fairly easy to make this a localized change. This also gets rid of sys_x32_times, however since this is a pretty late change don't compactify the system call numbers; we can reuse system call slot 521 next time we need an x32 system call. Reported-by: NGregory M. Lueck <gregory.m.lueck@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: H. J. Lu <hjl.tools@gmail.com> Link: http://lkml.kernel.org/r/1329696488-16970-1-git-send-email-hpa@zytor.com
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- 22 2月, 2012 1 次提交
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由 Linus Torvalds 提交于
While various modules include <asm/i387.h> to get access to things we actually *intend* for them to use, most of that header file was really pretty low-level internal stuff that we really don't want to expose to others. So split the header file into two: the small exported interfaces remain in <asm/i387.h>, while the internal definitions that are only used by core architecture code are now in <asm/fpu-internal.h>. The guiding principle for this was to expose functions that we export to modules, and leave them in <asm/i387.h>, while stuff that is used by task switching or was marked GPL-only is in <asm/fpu-internal.h>. The fpu-internal.h file could be further split up too, especially since arch/x86/kvm/ uses some of the remaining stuff for its module. But that kvm usage should probably be abstracted out a bit, and at least now the internal FPU accessor functions are much more contained. Even if it isn't perhaps as contained as it _could_ be. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1202211340330.5354@i5.linux-foundation.orgSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 21 2月, 2012 1 次提交
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由 H. Peter Anvin 提交于
There are some definitions which are duplicated between kernel/signal.c and ia32/ia32_signal.c; move them to a common header file. Rather than adding stuff to existing header files which contain data structures, create a new header file; hence the slightly odd name ("all the good ones were taken.") Note: nothing relied on signal_fault() being defined in <asm/ptrace.h>. Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 15 7月, 2011 1 次提交
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由 Oleg Nesterov 提交于
sys32_sigsuspend() and sys32_*sigreturn() change ->blocked directly. This is not correct, see the changelog in e6fa16ab "signal: sigprocmask() should do retarget_shared_pending()" Change them to use set_current_blocked(). Signed-off-by: NOleg Nesterov <oleg@redhat.com> Link: http://lkml.kernel.org/r/20110710192724.GA31755@redhat.comSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 23 2月, 2009 3 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Introduce {get|set}_user_seg() and loadsegment_xx() macros to make code clean. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup introduce GET_SEG() macro like arch/x86/kernel/signal.c. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup DEBUG_SIG will not be used. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 24 1月, 2009 1 次提交
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由 Hiroshi Shimamoto 提交于
Impact: use new framework Use {get|put}_user_try, catch, and _ex in arch/x86/ia32/ia32_signal.c. Note: this patch contains "WARNING: line over 80 characters", because when introducing new block I insert an indent to avoid mistakes by edit. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 29 12月, 2008 1 次提交
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由 Jaswinder Singh Rajput 提交于
Impact: cleanup, avoid 44 sparse warnings, new file asm/sys_ia32.h Fixes following sparse warnings: CHECK arch/x86/ia32/sys_ia32.c arch/x86/ia32/sys_ia32.c:53:17: warning: symbol 'sys32_truncate64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:60:17: warning: symbol 'sys32_ftruncate64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:98:17: warning: symbol 'sys32_stat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:109:17: warning: symbol 'sys32_lstat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:119:17: warning: symbol 'sys32_fstat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:128:17: warning: symbol 'sys32_fstatat' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:164:17: warning: symbol 'sys32_mmap' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:195:17: warning: symbol 'sys32_mprotect' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:201:17: warning: symbol 'sys32_pipe' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:215:17: warning: symbol 'sys32_rt_sigaction' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:291:17: warning: symbol 'sys32_sigaction' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:330:17: warning: symbol 'sys32_rt_sigprocmask' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:370:17: warning: symbol 'sys32_alarm' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:383:17: warning: symbol 'sys32_old_select' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:393:17: warning: symbol 'sys32_waitpid' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:401:17: warning: symbol 'sys32_sysfs' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:406:17: warning: symbol 'sys32_sched_rr_get_interval' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:421:17: warning: symbol 'sys32_rt_sigpending' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:445:17: warning: symbol 'sys32_rt_sigqueueinfo' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:472:17: warning: symbol 'sys32_sysctl' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:517:17: warning: symbol 'sys32_pread' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:524:17: warning: symbol 'sys32_pwrite' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:532:17: warning: symbol 'sys32_personality' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:545:17: warning: symbol 'sys32_sendfile' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:565:17: warning: symbol 'sys32_mmap2' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:589:17: warning: symbol 'sys32_olduname' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:626:6: warning: symbol 'sys32_uname' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:641:6: warning: symbol 'sys32_ustat' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:663:17: warning: symbol 'sys32_execve' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:678:17: warning: symbol 'sys32_clone' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:693:6: warning: symbol 'sys32_lseek' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:698:6: warning: symbol 'sys32_kill' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:703:6: warning: symbol 'sys32_fadvise64_64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:712:6: warning: symbol 'sys32_vm86_warning' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:726:6: warning: symbol 'sys32_lookup_dcookie' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:732:20: warning: symbol 'sys32_readahead' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:738:17: warning: symbol 'sys32_sync_file_range' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:746:17: warning: symbol 'sys32_fadvise64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:753:17: warning: symbol 'sys32_fallocate' was not declared. Should it be static? CHECK arch/x86/ia32/ia32_signal.c arch/x86/ia32/ia32_signal.c:126:17: warning: symbol 'sys32_sigsuspend' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:141:17: warning: symbol 'sys32_sigaltstack' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:249:17: warning: symbol 'sys32_sigreturn' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:279:17: warning: symbol 'sys32_rt_sigreturn' was not declared. Should it be static? CHECK arch/x86/ia32/ipc32.c arch/x86/ia32/ipc32.c:12:17: warning: symbol 'sys32_ipc' was not declared. Should it be static? Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 20 12月, 2008 1 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup No need to declare do_signal(). Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 18 12月, 2008 2 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Use arch/x86/include/asm/sigframe.h instead of defining redundant structures. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup, prepare to include sigframe.h Rename struct sigframe to struct sigframe_ia32 and struct rt_sigframe to struct rt_sigframe_ia32. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 17 12月, 2008 2 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Use __USER32_DS instead of __USER_DS in ia32_signal.c. No impact, because __USER32_DS is defined __USER_DS. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup __put_user() can be used for constant size 8, like arch/x86/kernel/signal.c. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 18 11月, 2008 5 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Change order of storing to match the sigcontext_ia32. And add casting to make this code same as arch/x86/kernel/signal_32.c. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup No need to use temporary variable. Also rename the variable same as arch/x86/kernel/signal_32.c. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Reviewed-by: NWANG Cong <wangcong@zeuux.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Remove mask parameter because it's always 3. Cleanup coding styles. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Reviewed-by: NWANG Cong <wangcong@zeuux.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup Introduce COPY_SEG_CPL3 for ia32_restore_sigcontext(). Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
Impact: cleanup No need to use temporary variable in this case. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 12 11月, 2008 1 次提交
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由 Hiroshi Shimamoto 提交于
Impact: reduce structure padding Remove unnecessary paddings, this saves 4 bytes. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 06 11月, 2008 1 次提交
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由 Hiroshi Shimamoto 提交于
Impact: cleanup move calling save_i387_xstate_ia32() into get_sigframe() from setup_sigcontext(). Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 27 10月, 2008 1 次提交
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由 Mikael Pettersson 提交于
Impact: cleanup, no functionality changed ia32_setup_rt_frame() has a duplicated code block labelled "Make -mregparm=3 work" for setting up the register parameters to the user-mode signal handler. This is harmless but ugly. Remove the redundant assignments. Signed-off-by: NMikael Pettersson <mikpe@it.uu.se> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 01 10月, 2008 2 次提交
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由 Hiroshi Shimamoto 提交于
the below 2 functions are called in save_i387_xstate_ia32() - clear_used_math(); - stts(); Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
__put_user() looks type of the 2nd parameter, so casting the 1st parameter is not necessary. text data bss dec hex filename 6227 0 8 6235 185b ia32_signal.o.new 6227 0 8 6235 185b ia32_signal.o.old Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 14 9月, 2008 2 次提交
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由 Hiroshi Shimamoto 提交于
This patch eliminates unused or unneeded variable handling. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hiroshi Shimamoto 提交于
When setup frame fails, force_sigsegv is called and returns -EFAULT. There is similar code in ia32_setup_frame(), ia32_setup_rt_frame(), __setup_frame() and __setup_rt_frame(). Make them identical. No change in functionality intended. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 20 8月, 2008 1 次提交
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由 Jeremy Fitzhardinge 提交于
Use savesegment and loadsegment consistently in ia32 compat code. Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 31 7月, 2008 3 次提交
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由 Suresh Siddha 提交于
On cpu's supporting xsave/xrstor, fpstate pointer in the sigcontext, will include the extended state information along with fpstate information. Presence of extended state information is indicated by the presence of FP_XSTATE_MAGIC1 at fpstate.sw_reserved.magic1 and FP_XSTATE_MAGIC2 at fpstate + (fpstate.sw_reserved.extended_size - FP_XSTATE_MAGIC2_SIZE). Extended feature bit mask that is saved in the memory layout is represented by the fpstate.sw_reserved.xstate_bv For RT signal frames, UC_FP_XSTATE in the uc_flags also indicate the presence of extended state information in the sigcontext's fpstate pointer. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Suresh Siddha 提交于
move 64bit routines that saves/restores fpstate in/from user stack from signal_64.c to xsave.c restore_i387_xstate() now handles the condition when user passes NULL fpstate. Other misc changes for prepartion of xsave/xrstor sigcontext support. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Suresh Siddha 提交于
dynamically allocate fpstate on the stack, instead of static allocation in the current sigframe layout on the user stack. This will allow the fpstate structure to grow in the future, which includes extended state information supporting xsave/xrstor. signal handlers will be able to access the fpstate pointer from the sigcontext structure asusual, with no change. For the non RT sigframe's (which are supported only for 32bit apps), current static fpstate layout in the sigframe will be unused(so that we don't change the extramask[] offset in the sigframe and thus prevent breaking app's which modify extramask[]). Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 19 7月, 2008 1 次提交
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由 Hiroshi Shimamoto 提交于
This was old code that was needed for iBCS and x86-64 never supported that. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 18 7月, 2008 1 次提交
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由 Hiroshi Shimamoto 提交于
Make and use macro FIX_EFLAGS, instead of immediate value 0x40DD5 in ia32_restore_sigcontext(). Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Acked-by: N"H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 30 4月, 2008 1 次提交
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由 Roland McGrath 提交于
Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Signed-off-by: NRoland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 26 4月, 2008 2 次提交
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由 Roland McGrath 提交于
This lifts the set_fs(USER_DS) call for signal handler setup out of the three places copying the same code into the one place that calls them all. There is no change in what it does. Signed-off-by: NRoland McGrath <roland@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Roland McGrath 提交于
This lifts the code diddling the TF and DF bits for signal handler setup out of the several places copying the same code into the one place that calls them all. There is no change in what it does. I also separated the recently-added DF bit clearing from the TF diddling. The compiler turns them back into one instruction anyway. The tossing in of DF to the same line of code with no new comments was a bit more arcane than seems wise. Signed-off-by: NRoland McGrath <roland@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 17 4月, 2008 1 次提交
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由 Roland McGrath 提交于
If the vDSO was not mapped, don't use it as the "restorer" for a signal handler. Whether we have a pointer in mm->context.vdso depends on what happened at exec time, so we shouldn't check any global flags now. Background: Currently, every 32-bit exec gets the vDSO mapped even if it's disabled (the process just doesn't get told about it). Because it's in fact always there, the bug that this patch fixes cannot happen now. With the second patch, it won't be mapped at all when it's disabled, which is one of the things that people might really want when they disable it (so nothing they didn't ask for goes into their address space). The 32-bit signal handler setup when SA_RESTORER is not used refers to current->mm->context.vdso without regard to whether the vDSO has been disabled when the process was exec'd. This patch fixes this not to use it when it's null, which becomes possible after the second patch. (This never happens in normal use, because glibc's sigaction call uses SA_RESTORER unless glibc detected the vDSO.) Signed-off-by: NRoland McGrath <roland@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 07 3月, 2008 1 次提交
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由 Aurelien Jarno 提交于
The Linux kernel currently does not clear the direction flag before calling a signal handler, whereas the x86/x86-64 ABI requires that. Linux had this behavior/bug forever, but this becomes a real problem with gcc version 4.3, which assumes that the direction flag is correctly cleared at the entry of a function. This patches changes the setup_frame() functions to clear the direction before entering the signal handler. Signed-off-by: NAurelien Jarno <aurelien@aurel32.net> Signed-off-by: NIngo Molnar <mingo@elte.hu> Acked-by: NH. Peter Anvin <hpa@zytor.com>
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