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From: Kumar Gala <galak@kernel.crashing.org>
To: Michael Neuling <mikey@neuling.org>
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Subject: Re: [PATCH 1/9] powerpc: Fix msr setting in 32 bit signal code
Date: Fri, 20 Jun 2008 01:35:50 -0500
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Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
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On Jun 19, 2008, at 11:13 PM, Michael Neuling wrote:

> If we set the SPE MSR bit in save_user_regs we can blow away the VEC
> bit.  This will never happen in reality (VMX and SPE will never be in
> the same processor as their opcodes overlap), but it looks bad.  Also
> when we add VSX here in a later patch, we can hit two of these at the
> same time.

Also, MSR_SPE and MSR_VEC are the same bit.  So we'd never clobber  
anything.

- k