linux-kernel - Re: [PATCH] x86 handle_vm86

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Message-Id: <20080322035357.4B43326F992@magilla.localdomain>
Date:	Fri, 21 Mar 2008 20:53:57 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86 handle_vm86_trap cleanup

> for the record, this also changes semantics, because previously we'd 
> permanently unblock SIGTRAP (most certainly as a hack, to be able to do 
> the send_sig()), while now we use force_sig() which just ignores the 
> blocked mask. (and i agree with your fix of course)

That's not so.  force_sig_info (called by force_sig) removes the signal
from the blocked set too.  That is the only way to get the signal ever to
be dequeued.


Thanks,
Roland
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