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/59d518698f664e07c036a5098833d7b56b953305.ca...@intel.com
Cc: "Edgecombe, Rick P" <rick.p.edgeco...@intel.com>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Borislav Petkov <b...@alien8.de>
Cc: Dave Hansen <dave.han...@linux.intel.com>
Cc: x...@kernel.org
Signed-off-by: Peter Xu <pet...@redhat.com>
---
Acked-by: David Hildenbrand <da...@redhat.com>
--
Cheers,
David / dhildenb
