1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/cpumask.h>
6 #include <linux/errno.h>
7 #include <asm/asm-extable.h>
11 cpumask_t cpu_attach_mask;
13 unsigned int flush_mm;
14 struct list_head pgtable_list;
15 struct list_head gmap_list;
16 unsigned long gmap_asce;
18 unsigned long asce_limit;
19 unsigned long vdso_base;
20 /* The mmu context belongs to a secure guest. */
21 atomic_t protected_count;
23 * The following bitfields need a down_write on the mm
24 * semaphore when they are written to. As they are only
25 * written once, they can be read without a lock.
27 * The mmu context allocates 4K page tables.
29 unsigned int alloc_pgste:1;
30 /* The mmu context uses extended page tables. */
31 unsigned int has_pgste:1;
32 /* The mmu context uses storage keys. */
33 unsigned int uses_skeys:1;
34 /* The mmu context uses CMM. */
35 unsigned int uses_cmm:1;
36 /* The gmaps associated with this context are allowed to use huge pages. */
37 unsigned int allow_gmap_hpage_1m:1;
40 #define INIT_MM_CONTEXT(name) \
41 .context.lock = __SPIN_LOCK_UNLOCKED(name.context.lock), \
42 .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \
43 .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list),