Messages in this thread | | | Date | Mon, 11 Jan 2021 17:24:02 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on arm64 with hardware access flag |
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On Fri, Jan 08, 2021 at 11:34:08AM -0800, Linus Torvalds wrote: > I still dislike how we basically randomly modify the information in > that 'vmf' thing.
I wounder if it would be acceptable to pass down to faultaround a copy of vmf, so it mess with it without risking to corrupt the original one?
We would need to transfer back prealloc_pte, but the rest can be safely discarded, I believe.
But it's somewhat wasteful of stack. sizeof(vmf) == 96 on x86-64.
-- Kirill A. Shutemov
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