Messages in this thread | | | Subject | Re: [PATCH 1/3] mm: add apply_to_existing_pages helper | From | Andrey Ryabinin <> | Date | Fri, 6 Dec 2019 19:24:25 +0300 |
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On 12/5/19 5:04 PM, Daniel Axtens wrote: > apply_to_page_range takes an address range, and if any parts of it > are not covered by the existing page table hierarchy, it allocates > memory to fill them in. > > In some use cases, this is not what we want - we want to be able to > operate exclusively on PTEs that are already in the tables. > > Add apply_to_existing_pages for this. Adjust the walker functions > for apply_to_page_range to take 'create', which switches them between > the old and new modes. > > This will be used in KASAN vmalloc. > > Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
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