1#include <asm/paravirt.h> 2 3DEF_NATIVE(pv_irq_ops, irq_disable, "cli"); 4DEF_NATIVE(pv_irq_ops, irq_enable, "sti"); 5DEF_NATIVE(pv_irq_ops, restore_fl, "push %eax; popf"); 6DEF_NATIVE(pv_irq_ops, save_fl, "pushf; pop %eax"); 7DEF_NATIVE(pv_cpu_ops, iret, "iret"); 8DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "sti; sysexit"); 9DEF_NATIVE(pv_mmu_ops, read_cr2, "mov %cr2, %eax"); 10DEF_NATIVE(pv_mmu_ops, write_cr3, "mov %eax, %cr3"); 11DEF_NATIVE(pv_mmu_ops, read_cr3, "mov %cr3, %eax"); 12DEF_NATIVE(pv_cpu_ops, clts, "clts"); 13DEF_NATIVE(pv_cpu_ops, read_tsc, "rdtsc"); 14 15unsigned 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} 50