| 1 | #include <asm/paravirt.h> |
| 2 | |
| 3 | DEF_NATIVE(pv_irq_ops, irq_disable, "cli"); |
| 4 | DEF_NATIVE(pv_irq_ops, irq_enable, "sti"); |
| 5 | DEF_NATIVE(pv_irq_ops, restore_fl, "push %eax; popf"); |
| 6 | DEF_NATIVE(pv_irq_ops, save_fl, "pushf; pop %eax"); |
| 7 | DEF_NATIVE(pv_cpu_ops, iret, "iret"); |
| 8 | DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "sti; sysexit"); |
| 9 | DEF_NATIVE(pv_mmu_ops, read_cr2, "mov %cr2, %eax"); |
| 10 | DEF_NATIVE(pv_mmu_ops, write_cr3, "mov %eax, %cr3"); |
| 11 | DEF_NATIVE(pv_mmu_ops, read_cr3, "mov %cr3, %eax"); |
| 12 | DEF_NATIVE(pv_cpu_ops, clts, "clts"); |
| 13 | DEF_NATIVE(pv_cpu_ops, read_tsc, "rdtsc"); |
| 14 | |
| 15 | unsigned native_patch(u8 type, u16 clobbers, void *ibuf, |
| 16 | unsigned long addr, unsigned len) |
| 17 | { |
| 18 | const unsigned char *start, *end; |
| 19 | unsigned ret; |
| 20 | |
| 21 | #define PATCH_SITE(ops, x) \ |
| 22 | case PARAVIRT_PATCH(ops.x): \ |
| 23 | start = start_##ops##_##x; \ |
| 24 | end = end_##ops##_##x; \ |
| 25 | goto patch_site |
| 26 | switch(type) { |
| 27 | PATCH_SITE(pv_irq_ops, irq_disable); |
| 28 | PATCH_SITE(pv_irq_ops, irq_enable); |
| 29 | PATCH_SITE(pv_irq_ops, restore_fl); |
| 30 | PATCH_SITE(pv_irq_ops, save_fl); |
| 31 | PATCH_SITE(pv_cpu_ops, iret); |
| 32 | PATCH_SITE(pv_cpu_ops, irq_enable_sysexit); |
| 33 | PATCH_SITE(pv_mmu_ops, read_cr2); |
| 34 | PATCH_SITE(pv_mmu_ops, read_cr3); |
| 35 | PATCH_SITE(pv_mmu_ops, write_cr3); |
| 36 | PATCH_SITE(pv_cpu_ops, clts); |
| 37 | PATCH_SITE(pv_cpu_ops, read_tsc); |
| 38 | |
| 39 | patch_site: |
| 40 | ret = paravirt_patch_insns(ibuf, len, start, end); |
| 41 | break; |
| 42 | |
| 43 | default: |
| 44 | ret = paravirt_patch_default(type, clobbers, ibuf, addr, len); |
| 45 | break; |
| 46 | } |
| 47 | #undef PATCH_SITE |
| 48 | return ret; |
| 49 | } |