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SubjectRe: 2G memory split
Linus Torvalds wrote:
>
> On Tue, 10 Jan 2006, Martin Bligh wrote:
>
>>The non-1GB-aligned ones need to be disbarred when PAE is on, I think.
>
>
> Well, right now _all_ the non-3:1 cases need to be disbarred. I think we
> depend on the kernel mapping only ever being the _one_ last entry in the
> top-level page table, which is only true with the 3:1 mapping.
>
> But I didn't check.

I think it was OK as of 2.6.5 or so, unless something changed recently.
Used to work unless you had PAE on, and a non-aligned split ... I had
that patch as a config option for a long time, as did SuSE, etc.

M.
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