linux/arch/powerpc/include/asm/nohash
Christophe Leroy 10248dcba1 powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP)
Powerpc 44x has two bits for exec protection in TLBs: one
for user (UX) and one for superviser (SX).

Clear SX on user pages in TLB miss handlers to provide KUEP.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/169310e08152aa1d96c979770291d165ec6896ae.1622616032.git.christophe.leroy@csgroup.eu
2021-06-17 00:09:07 +10:00
..
32 powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP) 2021-06-17 00:09:07 +10:00
64 powerpc/64: Fix the definition of the fixmap area 2021-04-22 20:59:15 +10:00
hugetlb-book3e.h powerpc/mm: cleanup ifdef mess in add_huge_page_size() 2019-05-03 01:20:23 +10:00
mmu-book3e.h powerpc/vdso: Replace vdso_base by vdso 2020-12-04 01:01:16 +11:00
mmu.h powerpc/mm: get rid of nohash/32/mmu.h and nohash/64/mmu.h 2019-05-03 01:20:24 +10:00
pgalloc.h powerpc/mmu_gather: enable RCU_TABLE_FREE even for !SMP case 2020-02-04 03:05:25 +00:00
pgtable.h powerpc: Fix incorrect stw{, ux, u, x} instructions in __set_pte_at 2020-12-04 22:13:19 +11:00
pte-book3e.h powerpc/64: only book3s/64 supports CONFIG_PPC_64K_PAGES 2019-05-03 01:20:23 +10:00
tlbflush.h powerpc/mm: Remove flush_tlb_page_nohash() prototype. 2020-12-09 16:45:08 +11:00