qemu-qemu-1/page-vary-system.c

/*
 * Variable page size handling -- system specific part.
 *
 *  Copyright (c) 2003 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "exec/page-vary.h"
#include "exec/tlb-flags.h"
#include "qemu/target-info-impl.h"

QEMU_BUILD_BUG_ON(TLB_FLAGS_MASK & ((1u < TARGET_PAGE_BITS_MIN) - 1));

int migration_legacy_page_bits(void)
{
    const TargetInfo *ti = target_info();

    assert(ti->page_bits_init >= TARGET_PAGE_BITS_MIN);
    return ti->page_bits_init;
}