Messages in this thread | | | Date | Sat, 13 Jun 2015 08:49:31 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 06/12] x86/mm: Enable and use the arch_pgd_init_late() method |
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* Oleg Nesterov <oleg@redhat.com> wrote:
> On 06/13, Oleg Nesterov wrote: > > > > Afaics, we need to ensure that: > > > > > + if (pgd_val(*pgd_src)) > > > + WRITE_ONCE(*pgd_dst, *pgd_src); > > > > either we notice the recent update of this PGD, or (say) the subsequent > > sync_global_pgds() can miss the child. > > and perhaps !pgd_none(pgd_src) will look better.
Indeed - fixed.
Thanks,
Ingo
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