Messages in this thread | | | Date | Tue, 29 Oct 2019 10:12:04 +0000 (UTC) | From | Christopher Lameter <> | Subject | Re: [PATCH RFC] mm: add MAP_EXCLUSIVE to create exclusive user mappings |
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On Tue, 29 Oct 2019, Mike Rapoport wrote:
> I've talked with Thomas yesterday and he suggested something similar: > > When the MAP_EXCLUSIVE request comes for the first time, we allocate a huge > page for it and then use this page as a pool of 4K pages for subsequent > requests. Once this huge page is full we allocate a new one and append it > to the pool. When all the 4K pages that comprise the huge page are freed > the huge page is collapsed.
Or write a device driver that allows you to mmap a secure area and avoid all core kernel modifications?
/dev/securemem or so?
It may exist already.
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