On Mon, Oct 28, 2024 at 06:07:54PM +0200, Alexander Shishkin wrote: > Of all the EFI runtime services, set_virtual_address_map is the only one set_virtual_address_map() > that is called at its lower mapping, which LASS prohibits regardless of > EFLAGS.AC setting. The only way to allow this to happen is to disable > LASS in the CR4 register. How does it interact with cr_pinning? IIUC, this can happen well after boot? Like on efivar fs mount. -- Kiryl Shutsemau / Kirill A. Shutemov