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[S390] guest page hinting light

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Use the existing arch_alloc_page/arch_free_page callbacks to do
the guest page state transitions between stable and unused.

Acked-by: Rik van Riel <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Martin Schwidefsky 2008-05-07 09:22:59 +02:00
commit 45e576b1c3
6 changed files with 107 additions and 0 deletions
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11
include/asm-s390/page.h
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@ -125,6 +125,17 @@ page_get_storage_key(unsigned long addr)
return skey;
}
#ifdef CONFIG_PAGE_STATES
struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
#define HAVE_ARCH_FREE_PAGE
#define HAVE_ARCH_ALLOC_PAGE
#endif
#endif /* !__ASSEMBLY__ */
/* to align the pointer to the (next) page boundary */

6
include/asm-s390/system.h
View file

@ -116,6 +116,12 @@ extern void pfault_fini(void);
#define pfault_fini() do { } while (0)
#endif /* CONFIG_PFAULT */
#ifdef CONFIG_PAGE_STATES
extern void cmma_init(void);
#else
static inline void cmma_init(void) { }
#endif
#define finish_arch_switch(prev) do { \
set_fs(current->thread.mm_segment); \
account_vtime(prev); \