On Sat, 2020-02-15 at 10:14:25 UTC, Christophe Leroy wrote:
> hash_page() needs to read page tables from kernel memory. When entire
> kernel memory is mapped by BATs, which is normally the case when
> CONFIG_STRICT_KERNEL_RWX is not set, it works even if the page hosting
> the page table is not ref
hash_page() needs to read page tables from kernel memory. When entire
kernel memory is mapped by BATs, which is normally the case when
CONFIG_STRICT_KERNEL_RWX is not set, it works even if the page hosting
the page table is not referenced in the MMU hash table.
However, if the page where the page
