Hi Mike, On Tue, Sep 14, 2021 at 10:52:39AM +0300, Mike Rapoport wrote: > On Mon, Sep 13, 2021 at 11:52:36AM +0200, Joerg Roedel wrote: > > + for (i = pgd_index(__PAGE_OFFSET); i < PTRS_PER_PGD; i++) > > + trampoline_pgd[i] = init_top_pgt[i].pgd; > > Don't we need to update the trampoline_pgd in sync_global_pgds() as well? No, the trampoline_pgd is setup after preallocate_vmalloc_pages(), so everything that would need synchronization is already in the reference page-table. Regards, Joerg