Re: [PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings()

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On Wed, May 13, 2020 at 8:21 AM Joerg Roedel <joro@xxxxxxxxxx> wrote:
>
> Hi,
>
> here is the next post of this series with these changes to the first
> version:
>
>         - Rebased to v5.7-rc5
>
>         - As a result of the rebase, also removed the
>           vmalloc_sync_mappings() call from tracing code
>
>         - Added a comment that we rely on the compiler optimizing calls
>           to arch_syn_kernel_mappings() away when
>           ARCH_PAGE_TABLE_SYNC_MASK is 0
>
> The first version can be found here:
>
>         https://lore.kernel.org/lkml/20200508144043.13893-1-joro@xxxxxxxxxx/
>
> The cover letter of the first post also has more details on the
> motivation for this patch-set.
>
> Please review.
>

Assuming the missing cleanup at the end gets done:

Acked-by: Andy Lutomirski <luto@xxxxxxxxxx>

grumpily acked, anyway.

I would love to see a followup patch that preallocates the vmalloc
region on 64-bit and compiles out pgd_list and all of the associated
gunk.




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