From 45e576b1c3d0020607b8666c0247164e92c7d719 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Wed, 7 May 2008 09:22:59 +0200 Subject: [S390] guest page hinting light 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 Signed-off-by: Martin Schwidefsky --- include/asm-s390/page.h | 11 +++++++++++ include/asm-s390/system.h | 6 ++++++ 2 files changed, 17 insertions(+) (limited to 'include/asm-s390') diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h index f0f4579eac1..12fd9c4f0f1 100644 --- a/include/asm-s390/page.h +++ b/include/asm-s390/page.h @@ -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 */ diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h index c819ae25a84..e0d4500d5f9 100644 --- a/include/asm-s390/system.h +++ b/include/asm-s390/system.h @@ -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); \ -- cgit v1.2.3