Re: BUG REPORT: User/Kernel Pointer bug in sys_poll

[Denis Vlasenko]

On Thursday 28 October 2004 09:32, Andi Kleen wrote:
> Sorav Bansal <sbansal@xxxxxxxxxxxx> writes:
> 
> > Older x86 architectures (386 and before) allow the kernel to write to any
> > user location regardless of the write-protect bits.
> 
> Actually it's only some early steppings of 386 and Linux never ran on
> a 286 or earlier. I think the best would be to just ignore it, the affected
> user base is very likely zero or very near it. I suspect the 
> probability of one of these machines still used as a multiuser
> machine is very definitely nil.

People ran Linux on 8086 (DragonLinux,ELKS iirc).

I admire their level of madness, but, really,
it is not useful to spend time on such things.

My personal bottom line of supported hw is 486.
--
vda

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