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Rev 1817 | Rev 1818 | ||
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Line 50... | Line 50... | ||
50 | uintptr_t last_frame = 0; |
50 | uintptr_t last_frame = 0; |
51 | 51 | ||
52 | #define L1_PT_SHIFT 10 |
52 | #define L1_PT_SHIFT 10 |
53 | #define L2_PT_SHIFT 0 |
53 | #define L2_PT_SHIFT 0 |
54 | 54 | ||
- | 55 | #define L1_PT_ENTRIES 1024 |
|
- | 56 | #define L2_PT_ENTRIES 1024 |
|
- | 57 | ||
55 | #define L1_OFFSET_MASK 0x3ff |
58 | #define L1_OFFSET_MASK (L1_PT_ENTRIES - 1) |
56 | #define L2_OFFSET_MASK 0x3ff |
59 | #define L2_OFFSET_MASK (L2_PT_ENTRIES - 1) |
57 | 60 | ||
58 | #define PFN2PTL1_OFFSET(pfn) ((pfn >> L1_PT_SHIFT) & L1_OFFSET_MASK) |
61 | #define PFN2PTL1_OFFSET(pfn) ((pfn >> L1_PT_SHIFT) & L1_OFFSET_MASK) |
59 | #define PFN2PTL2_OFFSET(pfn) ((pfn >> L2_PT_SHIFT) & L2_OFFSET_MASK) |
62 | #define PFN2PTL2_OFFSET(pfn) ((pfn >> L2_PT_SHIFT) & L2_OFFSET_MASK) |
60 | 63 | ||
61 | #define PAGE_MASK (~(PAGE_SIZE - 1)) |
64 | #define PAGE_MASK (~(PAGE_SIZE - 1)) |
Line 83... | Line 86... | ||
83 | pfn_t start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.pt_base), PAGE_SIZE)) + start_info.nr_pt_frames; |
86 | pfn_t start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.pt_base), PAGE_SIZE)) + start_info.nr_pt_frames; |
84 | size_t size = start_info.nr_pages - start; |
87 | size_t size = start_info.nr_pages - start; |
85 | 88 | ||
86 | /* Create identity mapping */ |
89 | /* Create identity mapping */ |
87 | pfn_t phys; |
90 | pfn_t phys; |
- | 91 | count_t count = 0; |
|
88 | for (phys = start; phys < start + size; phys++) { |
92 | for (phys = start; phys < start + size; phys++) { |
89 | mmu_update_t updates[1]; |
93 | mmu_update_t updates[L2_PT_ENTRIES]; |
90 | pfn_t virt = ADDR2PFN(PA2KA(PFN2ADDR(phys))); |
94 | pfn_t virt = ADDR2PFN(PA2KA(PFN2ADDR(phys))); |
91 | 95 | ||
92 | size_t ptl1_offset = PFN2PTL1_OFFSET(virt); |
96 | size_t ptl1_offset = PFN2PTL1_OFFSET(virt); |
93 | size_t ptl2_offset = PFN2PTL2_OFFSET(virt); |
97 | size_t ptl2_offset = PFN2PTL2_OFFSET(virt); |
94 | 98 | ||
Line 107... | Line 111... | ||
107 | unsigned long *ptl2_base2 = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset2]); |
111 | unsigned long *ptl2_base2 = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset2]); |
108 | 112 | ||
109 | if (ptl2_base2 == 0) |
113 | if (ptl2_base2 == 0) |
110 | panic("Unable to find page table reference"); |
114 | panic("Unable to find page table reference"); |
111 | 115 | ||
112 | updates[0].ptr = (uintptr_t) &ptl2_base2[ptl2_offset2]; |
116 | updates[count].ptr = (uintptr_t) &ptl2_base2[ptl2_offset2]; |
113 | updates[0].val = PFN2ADDR(start_info.mfn_list[start]) | L1_PROT; |
117 | updates[count].val = PFN2ADDR(start_info.mfn_list[start]) | L1_PROT; |
114 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
118 | if (xen_mmu_update(updates, count + 1, NULL, DOMID_SELF) < 0) |
115 | panic("Unable to map new page table"); |
119 | panic("Unable to map new page table"); |
- | 120 | count = 0; |
|
116 | 121 | ||
117 | mmu_ext.cmd = MMUEXT_PIN_L1_TABLE; |
122 | mmu_ext.cmd = MMUEXT_PIN_L1_TABLE; |
118 | mmu_ext.arg1.mfn = start_info.mfn_list[start]; |
123 | mmu_ext.arg1.mfn = start_info.mfn_list[start]; |
119 | if (xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF) < 0) |
124 | if (xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF) < 0) |
120 | panic("Error pinning new page table"); |
125 | panic("Error pinning new page table"); |
121 | 126 | ||
122 | unsigned long *ptl0 = (unsigned long *) PFN2ADDR(start_info.mfn_list[ADDR2PFN(KA2PA(start_info.pt_base))]); |
127 | unsigned long *ptl0 = (unsigned long *) PFN2ADDR(start_info.mfn_list[ADDR2PFN(KA2PA(start_info.pt_base))]); |
123 | 128 | ||
124 | updates[0].ptr = (uintptr_t) &ptl0[ptl1_offset]; |
129 | updates[count].ptr = (uintptr_t) &ptl0[ptl1_offset]; |
125 | updates[0].val = PFN2ADDR(start_info.mfn_list[start]) | L2_PROT; |
130 | updates[count].val = PFN2ADDR(start_info.mfn_list[start]) | L2_PROT; |
126 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
131 | if (xen_mmu_update(updates, count + 1, NULL, DOMID_SELF) < 0) |
127 | panic("Unable to update PTE for page table"); |
132 | panic("Unable to update PTE for page table"); |
- | 133 | count = 0; |
|
128 | 134 | ||
129 | ptl2_base = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset]); |
135 | ptl2_base = (unsigned long *) PTE2ADDR(start_info.pt_base[ptl1_offset]); |
130 | start++; |
136 | start++; |
131 | size--; |
137 | size--; |
132 | } |
138 | } |
133 | 139 | ||
134 | updates[0].ptr = (uintptr_t) &ptl2_base[ptl2_offset]; |
140 | updates[count].ptr = (uintptr_t) &ptl2_base[ptl2_offset]; |
135 | updates[0].val = PFN2ADDR(start_info.mfn_list[phys]) | L2_PROT; |
141 | updates[count].val = PFN2ADDR(start_info.mfn_list[phys]) | L2_PROT; |
- | 142 | count++; |
|
- | 143 | ||
- | 144 | if ((count == L2_PT_ENTRIES) || (phys + 1 == start + size)) { |
|
136 | if (xen_mmu_update(updates, 1, NULL, DOMID_SELF) < 0) |
145 | if (xen_mmu_update(updates, count, NULL, DOMID_SELF) < 0) |
137 | panic("Unable to update PTE"); |
146 | panic("Unable to update PTE"); |
- | 147 | count = 0; |
|
- | 148 | } |
|
138 | } |
149 | } |
139 | 150 | ||
140 | zone_create(start, size, start, 0); |
151 | zone_create(start, size, start, 0); |
141 | last_frame = start + size; |
152 | last_frame = start + size; |
142 | } |
153 | } |