Re: [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on arm64 with hardware access flag
From: Kirill A. Shutemov <hidden>
Date: 2021-01-11 14:25:00
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linux-mm, lkml
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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel