[Linux-ia64] patch ia32 mode [Threads don't wake up in ia32 mode]

[Linux-ia64] patch ia32 mode [Threads don't wake up in ia32 mode]

[Jose Luu]

This is the solution to the problem I described in june,

see test case there:
https://external-lists.valinux.com/archives//linux-ia64/2001-June/001792.htm
l

There was an oversight on the size of the long, which caused an improper
restoration of the real time signals blocking mask of the 32 bit frame, 2 of
these signals are used by the pthreads library for wakeup or cancellation.

This patch can be applied to all 2.4.x series kernels including 2.4.7, since
the file has not changed.

Jose


--- 2.4.5/arch/ia64/ia32/ia32_signal.c  Tue Oct 10 02:54:53 2000
+++ new-2.4.5/arch/ia64/ia32/ia32_signal.c      Thu Jul 26 12:49:42 2001
@@ -279,7 +279,7 @@
        err |= setup_sigcontext_ia32(&frame->sc, &frame->fpstate, regs,
set->sig[0]);

        if (_IA32_NSIG_WORDS > 1) {
-               err |= __copy_to_user(frame->extramask, &set->sig[1],
+               err |= __copy_to_user(frame->extramask,(((char *) &set->sig)
+ 4) ,
                                      sizeof(frame->extramask));
        }

Re: [Linux-ia64] patch ia32 mode [Threads don't wake up in ia32 mode]

[David Mosberger]

This patch looks correct to me, so I applied.  Don, speak up if you
object...

	--david

>>>>> On Thu, 26 Jul 2001 19:34:47 +0200, "Jose Luu" <jluu@mainsoft.com> said:

  Jose> This is the solution to the problem I described in june,

  Jose> see test case there:
  Jose> https://external-lists.valinux.com/archives//linux-ia64/2001-June/001792.htm
  Jose> l

  Jose> There was an oversight on the size of the long, which caused
  Jose> an improper restoration of the real time signals blocking mask
  Jose> of the 32 bit frame, 2 of these signals are used by the
  Jose> pthreads library for wakeup or cancellation.

  Jose> This patch can be applied to all 2.4.x series kernels
  Jose> including 2.4.7, since the file has not changed.

  Jose> Jose


  Jose> --- 2.4.5/arch/ia64/ia32/ia32_signal.c Tue Oct 10 02:54:53
  Jose> 2000 +++ new-2.4.5/arch/ia64/ia32/ia32_signal.c Thu Jul 26
  Jose> 12:49:42 2001 @@ -279,7 +279,7 @@ err |  Jose> setup_sigcontext_ia32(&frame->sc, &frame->fpstate, regs,
  set-> sig[0]);

  Jose>         if (_IA32_NSIG_WORDS > 1) { - err |  Jose> __copy_to_user(frame->extramask, &set->sig[1], + err |  Jose> __copy_to_user(frame->extramask,(((char *) &set->sig) + 4) ,
  Jose> sizeof(frame->extramask)); }



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