From: Christoph Hellwig <hch@lst.de>
To: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: rth@twiddle.net, linux-kernel@vger.kernel.org
Subject: Re: alpha fp-emu vs module refcounting
Date: Sat, 8 May 2004 00:41:04 +0200 [thread overview]
Message-ID: <20040507224104.GA21153@lst.de> (raw)
In-Reply-To: <20040508023717.A3960@jurassic.park.msu.ru>
On Sat, May 08, 2004 at 02:37:17AM +0400, Ivan Kokshaysky wrote:
> Ok, I realize - this seems to be confusing. I'll try to clarify:
> - First of all, mere mortals are _not_ allowed to compile mandatory
> alpha IEEE fp emulation code as a module. Which is documented
> in arch/alpha/Kconfig.
> - Roughly speaking, the fp emu _module_ code intercepts the fp traps,
> so races vs module loading/unloading are fundamentally unavoidable.
> These refcounting attempts just narrow the window.
>
> And no, try_module_get should never fail here.
>
> Alternatively, we could just drop _all_ module related stuff from
> alpha/math-emu...
either that or just marking it unloadable by removing the cleanup_module
handler sound like the simplest solution I guess.
next prev parent reply other threads:[~2004-05-07 23:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-07 11:02 alpha fp-emu vs module refcounting Christoph Hellwig
2004-05-07 14:32 ` Ivan Kokshaysky
2004-05-07 14:35 ` Christoph Hellwig
2004-05-07 22:37 ` Ivan Kokshaysky
2004-05-07 22:41 ` Christoph Hellwig [this message]
2004-05-07 22:51 ` Ivan Kokshaysky
2004-05-16 10:04 ` Christoph Hellwig
2004-05-16 12:44 ` Ivan Kokshaysky
2004-05-16 13:09 ` Christoph Hellwig
2004-05-17 22:39 ` Richard Henderson
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