On Thu, 15 Jul 2021 11:42:21 +0200 David Hildenbrand <[email protected]> wrote:
> > I'd propose to add Cc: <[email protected]> since I actually had > > the fun to try to debug something like this a couple of years ago: > > 6cdb18ad98a4 ("mm/vmstat: fix overflow in mod_zone_page_state()") > > > > Good point, and thinking again what can go wrong, I tend to agree. We > are trying to keep zones contiguous and it could happen that we end up > with something like ZONE_DMA here (via default_kernel_zone_for_pfn()) > and would consequently online something to ZONE_DMA that doesn't belong > there, resulting in crashes. > > @Andrew can you add Cc: <[email protected]> and > > "As we will search for a fitting zone using the wrong pfn, we might end > up onlining memory to one of the special kernel zones, such as ZONE_DMA, > which can end badly as the onlined memory does not satisfy properties of > these zones." Yep, all done. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
