Messages in this thread | | | Date | Wed, 15 Sep 2021 13:49:50 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH] x86/64/mm: Map all kernel memory into trampoline_pgd |
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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
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