diff options
Diffstat (limited to 'xen/include/asm-x86/x86_64')
| -rw-r--r-- | xen/include/asm-x86/x86_64/page.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/xen/include/asm-x86/x86_64/page.h b/xen/include/asm-x86/x86_64/page.h index f1448c12a8..2e61709e29 100644 --- a/xen/include/asm-x86/x86_64/page.h +++ b/xen/include/asm-x86/x86_64/page.h @@ -7,6 +7,7 @@ #define L3_PAGETABLE_SHIFT 30 #define L4_PAGETABLE_SHIFT 39 #define PAGE_SHIFT L1_PAGETABLE_SHIFT +#define SUPERPAGE_SHIFT L2_PAGETABLE_SHIFT #define ROOT_PAGETABLE_SHIFT L4_PAGETABLE_SHIFT #define PAGETABLE_ORDER 9 @@ -15,6 +16,7 @@ #define L3_PAGETABLE_ENTRIES (1<<PAGETABLE_ORDER) #define L4_PAGETABLE_ENTRIES (1<<PAGETABLE_ORDER) #define ROOT_PAGETABLE_ENTRIES L4_PAGETABLE_ENTRIES +#define SUPERPAGE_ORDER PAGETABLE_ORDER #define __PAGE_OFFSET DIRECTMAP_VIRT_START #define __XEN_VIRT_START XEN_VIRT_START @@ -41,6 +43,8 @@ extern void pfn_pdx_hole_setup(unsigned long); #define page_to_pdx(pg) ((pg) - frame_table) #define pdx_to_page(pdx) (frame_table + (pdx)) +#define spage_to_pdx(spg) ((spg>>(SUPERPAGE_SHIFT-PAGE_SHIFT)) - spage_table) +#define pdx_to_spage(pdx) (spage_table + ((pdx)<<(SUPERPAGE_SHIFT-PAGE_SHIFT))) /* * Note: These are solely for the use by page_{get,set}_owner(), and * therefore don't need to handle the XEN_VIRT_{START,END} range. @@ -64,6 +68,16 @@ static inline unsigned long pdx_to_pfn(unsigned long pdx) ((pdx << pfn_pdx_hole_shift) & pfn_top_mask); } +static inline unsigned long pfn_to_sdx(unsigned long pfn) +{ + return pfn_to_pdx(pfn) >> (SUPERPAGE_SHIFT-PAGE_SHIFT); +} + +static inline unsigned long sdx_to_pfn(unsigned long sdx) +{ + return pdx_to_pfn(sdx << (SUPERPAGE_SHIFT-PAGE_SHIFT)); +} + static inline unsigned long __virt_to_maddr(unsigned long va) { ASSERT(va >= XEN_VIRT_START); |