On Wed, Feb 17, 2021 at 11:18:59AM +0100, Oscar Salvador wrote: > On Tue, Feb 09, 2021 at 02:38:47PM +0100, Oscar Salvador wrote: > > Hi, > > > > here is v2. > > > > Changes from v1 -> v2 > > - Addressed feedback from David > > - Fence off the feature in case struct page size is not > > multiple of PMD size or pageblock alignment cannot be guaranted > > - Tested on x86_64 small and large memory_blocks > > - Tested on arm64 4KB and 64KB page sizes (for some reason I cannot boot > > my VM with 16KB page size). > > > > Arm64 with 4KB page size behaves like x86_64 after [1], which made section > > size smaller. > > With 64KB, the feature gets fenced off due to pageblock alignment. > > > > Changes from RFCv3 -> v1: > > - Addressed feedback from David > > - Re-order patches > > > > Changes from v2 -> v3 (RFC): > > - Re-order patches (Michal) > > - Fold "mm,memory_hotplug: Introduce MHP_MEMMAP_ON_MEMORY" in patch#1 > > - Add kernel boot option to enable this feature (Michal) > > > > Changes from v1 -> v2 (RFC): > > - Addressed feedback provided by David > > - Add a arch_support_memmap_on_memory to be called > > from mhp_supports_memmap_on_memory, as atm, > > only ARM, powerpc and x86_64 have altmat support. > > > > [1] https://lore.kernel.org/lkml/cover.1611206601.git.sudaraja@xxxxxxxxxxxxxx/ > > Let me refloat this one :-) Kindly ping :-) -- Oscar Salvador SUSE L3
