On Mon, May 08, 2023 at 09:03:17AM +0200, Ard Biesheuvel wrote: > Since we know the current and desired number of paging levels when > preparing the trampoline, let's not call the trampoline at all when we > know that calling it is not going to result in a change to the number of > paging levels. Given that we are already running in long mode, the PAE > and LA57 settings are necessarily consistent with the currently active > page tables - the only difference is that we will always preserve > CR4.MCE in this case, but this will be cleared by the real kernel > startup code if CONFIG_X86_MCE is not enabled. > > Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx> Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> -- Kiryl Shutsemau / Kirill A. Shutemov
