Re: [RFC 0/9] Linear Address Masking enabling

[Peter Zijlstra]

On Fri, Feb 05, 2021 at 06:16:20PM +0300, Kirill A. Shutemov wrote:
> The feature competes for bits with 5-level paging: LAM_U48 makes it
> impossible to map anything about 47-bits. The patchset made these
> capability mutually exclusive: whatever used first wins. LAM_U57 can be
> combined with mappings above 47-bits.

And I suppose we still can't switch between 4 and 5 level at runtime,
using a CR3 bit?