On Fri, Jun 26, 2020 at 11:34:50AM +0200, Joerg Roedel wrote: > From: Joerg Roedel <jroedel@xxxxxxx> > > Pre-allocate the page-table pages for the vmalloc area at the level > which needs synchronization on x86. This is P4D for 5-level and PUD > for 4-level paging. > > Doing this at boot makes sure all page-tables in the system have these > pages already and do not need to be synchronized at runtime. The > runtime synchronizatin takes the pgd_lock and iterates over all > page-tables in the system, so it can take quite long and is better > avoided. > > Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> > --- Can't we now remove arch_sync_kernel_mappings() from this same file?
