On 15.07.24 21:21, Peter Xu wrote:
Introduce arch_check_zapped_pud() to sanity check shadow stack on PUD zaps.
It has the same logic of the PMD helper.
One thing to mention is, it might be a good idea to use page_table_check in
the future for trapping wrong setups of shadow stack pgtable entries [1].
That is left for the future as a separate effort.
[1]
https://lore.kernel.org/all/[email protected]
Cc: "Edgecombe, Rick P" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: [email protected]
Signed-off-by: Peter Xu <[email protected]>
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Acked-by: David Hildenbrand <[email protected]>
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Cheers,
David / dhildenb
