diff options
Diffstat (limited to 'xen/include/asm-x86/x86_32/page-3level.h')
| -rw-r--r-- | xen/include/asm-x86/x86_32/page-3level.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/xen/include/asm-x86/x86_32/page-3level.h b/xen/include/asm-x86/x86_32/page-3level.h deleted file mode 100644 index 1c326cf009..0000000000 --- a/xen/include/asm-x86/x86_32/page-3level.h +++ /dev/null @@ -1,90 +0,0 @@ -#ifndef __X86_32_PAGE_3LEVEL_H__ -#define __X86_32_PAGE_3LEVEL_H__ - -#define L1_PAGETABLE_SHIFT 12 -#define L2_PAGETABLE_SHIFT 21 -#define L3_PAGETABLE_SHIFT 30 -#define PAGE_SHIFT L1_PAGETABLE_SHIFT -#define ROOT_PAGETABLE_SHIFT L3_PAGETABLE_SHIFT - -#define PAGETABLE_ORDER 9 -#define L1_PAGETABLE_ENTRIES (1<<PAGETABLE_ORDER) -#define L2_PAGETABLE_ENTRIES (1<<PAGETABLE_ORDER) -#define L3_PAGETABLE_ENTRIES 4 -#define ROOT_PAGETABLE_ENTRIES L3_PAGETABLE_ENTRIES - -/* - * Architecturally, physical addresses may be up to 52 bits. However, the - * page-frame number (pfn) of a 52-bit address will not fit into a 32-bit - * word. Instead we treat bits 44-51 of a pte as flag bits which are never - * allowed to be set by a guest kernel. This 'limits' us to addressing 16TB - * of physical memory on a 32-bit PAE system. - */ -#define PADDR_BITS 44 -#define PADDR_MASK ((1ULL << PADDR_BITS)-1) - -#ifndef __ASSEMBLY__ - -#include <asm/types.h> - -/* read access (should only be used for debug printk's) */ -typedef u64 intpte_t; -#define PRIpte "016llx" - -typedef struct { intpte_t l1; } l1_pgentry_t; -typedef struct { intpte_t l2; } l2_pgentry_t; -typedef struct { intpte_t l3; } l3_pgentry_t; -typedef l3_pgentry_t root_pgentry_t; - -#endif /* !__ASSEMBLY__ */ - -#define pte_read_atomic(ptep) ({ \ - intpte_t __pte = *(ptep), __npte; \ - while ( (__npte = cmpxchg(ptep, __pte, __pte)) != __pte ) \ - __pte = __npte; \ - __pte; }) -#define pte_write_atomic(ptep, pte) do { \ - intpte_t __pte = *(ptep), __npte; \ - while ( (__npte = cmpxchg(ptep, __pte, (pte))) != __pte ) \ - __pte = __npte; \ -} while ( 0 ) -#define pte_write(ptep, pte) do { \ - u32 *__ptep_words = (u32 *)(ptep); \ - __ptep_words[0] = 0; \ - wmb(); \ - __ptep_words[1] = (pte) >> 32; \ - wmb(); \ - __ptep_words[0] = (pte) >> 0; \ -} while ( 0 ) - -/* root table */ -#define root_get_pfn l3e_get_pfn -#define root_get_flags l3e_get_flags -#define root_get_intpte l3e_get_intpte -#define root_empty l3e_empty -#define root_from_paddr l3e_from_paddr -#define PGT_root_page_table PGT_l3_page_table - -/* misc */ -#define is_guest_l1_slot(s) (1) -#define is_guest_l2_slot(d,t,s) \ - ( !((t) & PGT_pae_xen_l2) || \ - ((s) < (L2_PAGETABLE_FIRST_XEN_SLOT & (L2_PAGETABLE_ENTRIES - 1))) ) -#define is_guest_l3_slot(s) (1) - -/* - * PTE pfn and flags: - * 32-bit pfn = (pte[43:12]) - * 32-bit flags = (pte[63:44],pte[11:0]) - */ - -#define _PAGE_NX_BIT (1U<<31) -#define _PAGE_NX (cpu_has_nx ? _PAGE_NX_BIT : 0) - -/* Extract flags into 32-bit integer, or turn 32-bit flags into a pte mask. */ -#define get_pte_flags(x) (((int)((x) >> 32) & ~0xFFF) | ((int)(x) & 0xFFF)) -#define put_pte_flags(x) (((intpte_t)((x) & ~0xFFF) << 32) | ((x) & 0xFFF)) - -#define L3_DISALLOW_MASK 0xFFFFF1FEU /* must-be-zero */ - -#endif /* __X86_32_PAGE_3LEVEL_H__ */ |