On Wed, Sep 2, 2020 at 8:59 AM Joerg Roedel <[email protected]> wrote: > > From: Joerg Roedel <[email protected]> > > One can not simply remove vmalloc faulting on x86-32. Upstream > > commit: 7f0a002b5a21 ("x86/mm: remove vmalloc faulting") > > removed it on x86 alltogether because previously the > arch_sync_kernel_mappings() interface was introduced. This interface > added synchronization of vmalloc/ioremap page-table updates to all > page-tables in the system at creation time and was thought to make > vmalloc faulting obsolete. > > But that assumption was incredibly naive.
Does this mean we can get rid of arch_sync_kernel_mappings()? Or should we consider adding some locking to make it non-racy again? -Andy
