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Release pages to OS when setting 0 label

Authored by Jianzhou Zhao <jianzhouzh@google.com> on Oct 10 2020, 6:26 PM.

Description

Release pages to OS when setting 0 label

This is a follow up patch of https://reviews.llvm.org/D88755.

When set 0 label for an address range, we can release pages within the
corresponding shadow address range to OS, and set only addresses outside
the pages to be 0.

Reviewed-by: morehouse, eugenis
Differential Revision: https://reviews.llvm.org/D89199

Event Timeline

Jianzhou Zhao <jianzhouzh@google.com> committed rGcc07fbe37dc8: Release pages to OS when setting 0 label (authored by Jianzhou Zhao <jianzhouzh@google.com>).Oct 20 2020, 9:22 AM