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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright IBM Corp. 2008
*
* Guest page hinting for unused pages.
*
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
#include <linux/mm.h>
#include <asm/page-states.h>
#include <asm/sections.h>
#include <asm/page.h>
int __bootdata_preserved(cmma_flag);
void arch_free_page(struct page *page, int order)
{
if (!cmma_flag)
return;
__set_page_unused(page_to_virt(page), 1UL << order);
}
void arch_alloc_page(struct page *page, int order)
{
if (!cmma_flag)
return;
if (cmma_flag < 2)
__set_page_stable_dat(page_to_virt(page), 1UL << order);
else
__set_page_stable_nodat(page_to_virt(page), 1UL << order);
}
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