/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MMU_H
#define __MMU_H

#include <linux/cpumask.h>
#include <linux/errno.h>
#include <asm/asm-extable.h>

typedef struct {
        spinlock_t lock;
        cpumask_t cpu_attach_mask;
        atomic_t flush_count;
        unsigned int flush_mm;
        struct list_head gmap_list;
        unsigned long gmap_asce;
        unsigned long asce;
        unsigned long asce_limit;
        unsigned long vdso_base;
        /* The mmu context belongs to a secure guest. */
        atomic_t protected_count;
        /*
         * The mmu context allows COW-sharing of memory pages (KSM, zeropage).
         * Note that COW-sharing during fork() is currently always allowed.
         */
        unsigned int allow_cow_sharing:1;
} mm_context_t;

#define INIT_MM_CONTEXT(name)                                              \
        .context.lock = __SPIN_LOCK_UNLOCKED(name.context.lock),           \
        .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list),

#endif