linux-kernel - Re: [PATCH] math-emu: Add support for reporting exact invalid exception

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Message-Id: <20080821.140502.146697690.davem@davemloft.net>
Date:	Thu, 21 Aug 2008 14:05:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	galak@...nel.crashing.org
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] math-emu: Add support for reporting exact invalid
 exception

From: Kumar Gala <galak@...nel.crashing.org>
Date: Thu, 21 Aug 2008 07:50:21 -0500

> Some architectures (like powerpc) provide status information on the exact
> type of invalid exception.  This is pretty straight forward as we already
> report invalid exceptions via FP_SET_EXCEPTION.
> 
> We add new flags (FP_EX_INVALID_*) the architecture code can define if it
> wants the exact invalid exception reported.
> 
> We had to split out the INF/INF and 0/0 cases for divide to allow reporting
> the two invalid forms properly.
> 
> Signed-off-by: Kumar Gala <galak@...nel.crashing.org>

Acked-by: David S. Miller <davem@...emloft.net>
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