On Fri, Feb 05, 2021 at 04:49:05PM +0100, Peter Zijlstra wrote: > 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? No. And I can't imagine how would it work with 5-level on kernel side. -- Kirill A. Shutemov
