1 #include <asm/paravirt.h>
2 #include <asm/asm-offsets.h>
3 #include <linux/stringify.h>
5 DEF_NATIVE(pv_irq_ops, irq_disable, "cli");
6 DEF_NATIVE(pv_irq_ops, irq_enable, "sti");
7 DEF_NATIVE(pv_irq_ops, restore_fl, "pushq %rdi; popfq");
8 DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax");
9 DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax");
10 DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax");
11 DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3");
12 DEF_NATIVE(pv_cpu_ops, clts, "clts");
13 DEF_NATIVE(pv_cpu_ops, wbinvd, "wbinvd");
15 DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "swapgs; sti; sysexit");
16 DEF_NATIVE(pv_cpu_ops, usergs_sysret64, "swapgs; sysretq");
17 DEF_NATIVE(pv_cpu_ops, usergs_sysret32, "swapgs; sysretl");
18 DEF_NATIVE(pv_cpu_ops, swapgs, "swapgs");
20 DEF_NATIVE(, mov32, "mov %edi, %eax");
21 DEF_NATIVE(, mov64, "mov %rdi, %rax");
23 unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len)
25 return paravirt_patch_insns(insnbuf, len,
26 start__mov32, end__mov32);
29 unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len)
31 return paravirt_patch_insns(insnbuf, len,
32 start__mov64, end__mov64);
35 unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
36 unsigned long addr, unsigned len)
38 const unsigned char *start, *end;
41 #define PATCH_SITE(ops, x) \
42 case PARAVIRT_PATCH(ops.x): \
43 start = start_##ops##_##x; \
44 end = end_##ops##_##x; \
47 PATCH_SITE(pv_irq_ops, restore_fl);
48 PATCH_SITE(pv_irq_ops, save_fl);
49 PATCH_SITE(pv_irq_ops, irq_enable);
50 PATCH_SITE(pv_irq_ops, irq_disable);
51 PATCH_SITE(pv_cpu_ops, irq_enable_sysexit);
52 PATCH_SITE(pv_cpu_ops, usergs_sysret32);
53 PATCH_SITE(pv_cpu_ops, usergs_sysret64);
54 PATCH_SITE(pv_cpu_ops, swapgs);
55 PATCH_SITE(pv_mmu_ops, read_cr2);
56 PATCH_SITE(pv_mmu_ops, read_cr3);
57 PATCH_SITE(pv_mmu_ops, write_cr3);
58 PATCH_SITE(pv_cpu_ops, clts);
59 PATCH_SITE(pv_cpu_ops, wbinvd);
62 ret = paravirt_patch_insns(ibuf, len, start, end);
66 ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);