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    SubjectRe: [patch] SMP alternatives
    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.

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      Last update: 2005-11-23 20:15    [W:0.025 / U:8.568 seconds]
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