On Wed, Jun 13, 2018 at 06:46:34PM +0000, Dave Hansen wrote: > On 06/12/2018 07:39 AM, Kirill A. Shutemov wrote: > > Add new config option to enabled/disable Multi-Key Total Memory > > Encryption support. > > > > MKTME uses MEMORY_PHYSICAL_PADDING to reserve enough space in per-KeyID > > direct mappings for memory hotplug. > > Isn't it really *the* direct mapping primarily? We make all of them > larger, but the direct mapping is impacted too. This makes it sound > like it applies only to the MKTME mappings. We only cares about the padding in two cases: MKTME and KALSR. If none of them enabled padding doesn't have meaning. We have PAGE_OFFSET at fixed address and size is also fixed. -- Kirill A. Shutemov
