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