1 #include <asm/paravirt.h>
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");
15 #if defined(CONFIG_PARAVIRT_SPINLOCKS) && defined(CONFIG_QUEUED_SPINLOCKS)
16 DEF_NATIVE(pv_lock_ops, queued_spin_unlock, "movb $0, (%eax)");
19 unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len)
21 /* arg in %eax, return in %eax */
25 unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len)
27 /* arg in %edx:%eax, return in %edx:%eax */
31 extern bool pv_is_native_spin_unlock(void);
33 unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
34 unsigned long addr, unsigned len)
36 const unsigned char *start, *end;
39 #define PATCH_SITE(ops, x) \
40 case PARAVIRT_PATCH(ops.x): \
41 start = start_##ops##_##x; \
42 end = end_##ops##_##x; \
45 PATCH_SITE(pv_irq_ops, irq_disable);
46 PATCH_SITE(pv_irq_ops, irq_enable);
47 PATCH_SITE(pv_irq_ops, restore_fl);
48 PATCH_SITE(pv_irq_ops, save_fl);
49 PATCH_SITE(pv_cpu_ops, iret);
50 PATCH_SITE(pv_cpu_ops, irq_enable_sysexit);
51 PATCH_SITE(pv_mmu_ops, read_cr2);
52 PATCH_SITE(pv_mmu_ops, read_cr3);
53 PATCH_SITE(pv_mmu_ops, write_cr3);
54 PATCH_SITE(pv_cpu_ops, clts);
55 PATCH_SITE(pv_cpu_ops, read_tsc);
56 #if defined(CONFIG_PARAVIRT_SPINLOCKS) && defined(CONFIG_QUEUED_SPINLOCKS)
57 case PARAVIRT_PATCH(pv_lock_ops.queued_spin_unlock):
58 if (pv_is_native_spin_unlock()) {
59 start = start_pv_lock_ops_queued_spin_unlock;
60 end = end_pv_lock_ops_queued_spin_unlock;
66 ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);
70 ret = paravirt_patch_insns(ibuf, len, start, end);