Re: i486 emu in mainline?
From: Pavel Machek
Date: Mon May 31 2004 - 08:41:09 EST
> >> It was intentional for speed purpose. The areas are checked once with
> >> verify_area() when we need to access memory, then data is copied directly
> >> from/to memory. I don't think there's any risk, but I can be wrong.
> > Which will break with 4G/4G. You must use at least __get_user().
> A 386 with a 4G/4G split, I'd like to see that.
I believe you could...
1) some 586 class machines do not know 486 opcodes
2) this is for rescue kernel. If you want to be able to rescue 64GB machine *and* rescue 486 too,
this+4G/4G is right choice ;-)
64 bytes from 220.127.116.11: icmp_seq=28 ttl=51 time=448769.1 ms
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