Re: [patch] SMP alternatives
From: H. Peter Anvin
Date: Wed Nov 23 2005 - 14:12:56 EST
Linus Torvalds wrote:
Of course, if it's in one of the low 12 bits of %cr3, there would have to
be a "enable this bit" in %cr4 or something. Historically, you could write
any crap in the low bits, I think.
No, most of them are RAZ, but there are at least a couple of bits which
have effect (e.g. caching of the page tables.)
However, with PAE there aren't really a whole lot of unused bits in CR3.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/