On Wed, Feb 11, 2026 at 8:40 PM Pasha Tatashin <[email protected]> wrote: > > On Wed, Feb 11, 2026 at 12:40 PM Michal Clapinski <[email protected]> > wrote: > > > > From: Evangelos Petrongonas <[email protected]> > > > > When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, struct page > > initialization is deferred to parallel kthreads that run later > > in the boot process. > > > > During KHO restoration, deserialize_bitmap() writes metadata for > > each preserved memory region. However, if the struct page has not been > > initialized, this write targets uninitialized memory, potentially > > leading to errors like: > > BUG: unable to handle page fault for address: ... > > > > Fix this by introducing kho_get_preserved_page(), which ensures > > all struct pages in a preserved region are initialized by calling > > init_deferred_page() which is a no-op when deferred init is disabled > > or when the struct page is already initialized. > > > > Co-developed-by: Michal Clapinski <[email protected]> > > > Signed-off-by: Evangelos Petrongonas <[email protected]> > > Signed-off-by: Michal Clapinski <[email protected]> > > Reviewed-by: Pratyush Yadav (Google) <[email protected]> > > --- > > v3: > > - changed commit msg > > - don't invoke early_pfn_to_nid if CONFIG_DEFERRED_STRUCT_PAGE_INIT=n > > Reviewed-by: Pasha Tatashin <[email protected]>
Hello Andrew, could you please apply this with the added Co-developed-by tag? Thanks, Michal
