Date: Thu, 26 May 2005 15:37:13 -0700 (PDT)
Message-Id: <20050526.153713.95060123.davem@davemloft.net>
To: roland@redhat.com
Cc: akpm@osdl.org, torvalds@osdl.org, mtk-lkml@gmx.net,
       linux-kernel@vger.kernel.org, michael.kerrisk@gmx.net
Subject: Re: waitid() fails with EINVAL for SA_RESTART signals
From: "David S. Miller" <davem@davemloft.net>
In-Reply-To: <200505262222.j4QMMHWe010741@magilla.sf.frob.com>
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	<200505262222.j4QMMHWe010741@magilla.sf.frob.com>
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From: Roland McGrath <roland@redhat.com>
Date: Thu, 26 May 2005 15:22:17 -0700

> Other machines are subject to the same risk and should have a
> prevent_tail_call definition too.  The asm-i386/linkage.h version probably
> works fine for every machine.  It might as well be generic, I'd say.

Sparc, for one, doesn't need it.  We pass the pt_regs in via a pointer
to the trap level stack frame which won't be released by a tail-call
in C code.
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