// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright IBM Corp. 2023
 */

#include <linux/export.h>
#include <asm/facility.h>

unsigned int stfle_size(void)
{
        static unsigned int size;
        unsigned int r;
        u64 dummy;

        r = READ_ONCE(size);
        if (!r) {
                r = __stfle_asm(&dummy, 1) + 1;
                WRITE_ONCE(size, r);
        }
        return r;
}
EXPORT_SYMBOL(stfle_size);