Re: [PATCH] Make LIST_POISON less deadly

[Avi Kivity]

Ingo Molnar wrote:
> * Avi Kivity <avi@xxxxxxxxxxxx> wrote:
>
>   
> > > i'd suggest to add an ARCH_ILLEGAL_POINTER define instead, which 
> > > defaults to zero and gets added to pointer-ish poison values. That 
> > > makes it both simpler and also it does not need any include/asm 
> > > changes because ARCH_ILLEGAL_POINTER can be set from the Kconfig 
> > > space.
> > >       
> > Right.
> >
> > How much unmapped space do we have on i386 or other archs?  The deltas 
> > added to ARCH_ILLEGAL_POINTER will have to be limited to that.
> >     
>
> can we get away with having the offset default to zero, and all poison 
> values remain unchanged if that? Then 64-bit x86 could just set the 
> offset to 2^63 and we wont have to worry about 32-bit x86 at all ...
>
> i.e. start small with this and only have an effect on 64-bit x86.
>   

Sure, will post an updated patch.

--
error compiling committee.c: too many arguments to function

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