PGTY_table
PGTY_table
Posted Jan 9, 2025 16:09 UTC (Thu) by willy (subscriber, #9762)Parent article: Page-table hardening with memory protection keys
In 2018, I added PG_table (since renamed PGTY_table) to mark pages allocated for page tables. In March 2019, I added code to prevent page tables being mapped into userspace. That doesn't address the same attacks being defended against here, but it was a cheap check to add that doesn't require new CPU features.
Posted Jan 16, 2025 5:03 UTC (Thu)
by rgb (subscriber, #57129)
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PGTY_table
Is this enabled by default in most common distribution kernels nowadays?