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Commit | Line | Data |
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53fd13cf GOC |
1 | #include <asm/paravirt.h> |
2 | #include <asm/asm-offsets.h> | |
8a650ce2 | 3 | #include <linux/stringify.h> |
53fd13cf GOC |
4 | |
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"); | |
53fd13cf GOC |
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_mmu_ops, flush_tlb_single, "invlpg (%rdi)"); | |
13 | DEF_NATIVE(pv_cpu_ops, clts, "clts"); | |
14 | DEF_NATIVE(pv_cpu_ops, wbinvd, "wbinvd"); | |
15 | ||
2be29982 JF |
16 | DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "swapgs; sti; sysexit"); |
17 | DEF_NATIVE(pv_cpu_ops, usergs_sysret64, "swapgs; sysretq"); | |
18 | DEF_NATIVE(pv_cpu_ops, usergs_sysret32, "swapgs; sysretl"); | |
53fd13cf GOC |
19 | DEF_NATIVE(pv_cpu_ops, swapgs, "swapgs"); |
20 | ||
41edafdb JF |
21 | DEF_NATIVE(, mov32, "mov %edi, %eax"); |
22 | DEF_NATIVE(, mov64, "mov %rdi, %rax"); | |
23 | ||
62c7a1e9 | 24 | #if defined(CONFIG_PARAVIRT_SPINLOCKS) && defined(CONFIG_QUEUED_SPINLOCKS) |
f233f7f1 PZI |
25 | DEF_NATIVE(pv_lock_ops, queued_spin_unlock, "movb $0, (%rdi)"); |
26 | #endif | |
27 | ||
41edafdb JF |
28 | unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len) |
29 | { | |
30 | return paravirt_patch_insns(insnbuf, len, | |
31 | start__mov32, end__mov32); | |
32 | } | |
33 | ||
34 | unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len) | |
35 | { | |
36 | return paravirt_patch_insns(insnbuf, len, | |
37 | start__mov64, end__mov64); | |
38 | } | |
39 | ||
f233f7f1 PZI |
40 | extern bool pv_is_native_spin_unlock(void); |
41 | ||
53fd13cf GOC |
42 | unsigned native_patch(u8 type, u16 clobbers, void *ibuf, |
43 | unsigned long addr, unsigned len) | |
44 | { | |
45 | const unsigned char *start, *end; | |
46 | unsigned ret; | |
47 | ||
48 | #define PATCH_SITE(ops, x) \ | |
49 | case PARAVIRT_PATCH(ops.x): \ | |
50 | start = start_##ops##_##x; \ | |
51 | end = end_##ops##_##x; \ | |
52 | goto patch_site | |
53 | switch(type) { | |
54 | PATCH_SITE(pv_irq_ops, restore_fl); | |
55 | PATCH_SITE(pv_irq_ops, save_fl); | |
56 | PATCH_SITE(pv_irq_ops, irq_enable); | |
57 | PATCH_SITE(pv_irq_ops, irq_disable); | |
2be29982 JF |
58 | PATCH_SITE(pv_cpu_ops, usergs_sysret32); |
59 | PATCH_SITE(pv_cpu_ops, usergs_sysret64); | |
53fd13cf GOC |
60 | PATCH_SITE(pv_cpu_ops, swapgs); |
61 | PATCH_SITE(pv_mmu_ops, read_cr2); | |
62 | PATCH_SITE(pv_mmu_ops, read_cr3); | |
63 | PATCH_SITE(pv_mmu_ops, write_cr3); | |
64 | PATCH_SITE(pv_cpu_ops, clts); | |
65 | PATCH_SITE(pv_mmu_ops, flush_tlb_single); | |
66 | PATCH_SITE(pv_cpu_ops, wbinvd); | |
62c7a1e9 | 67 | #if defined(CONFIG_PARAVIRT_SPINLOCKS) && defined(CONFIG_QUEUED_SPINLOCKS) |
f233f7f1 PZI |
68 | case PARAVIRT_PATCH(pv_lock_ops.queued_spin_unlock): |
69 | if (pv_is_native_spin_unlock()) { | |
70 | start = start_pv_lock_ops_queued_spin_unlock; | |
71 | end = end_pv_lock_ops_queued_spin_unlock; | |
72 | goto patch_site; | |
73 | } | |
74 | #endif | |
53fd13cf GOC |
75 | |
76 | default: | |
77 | ret = paravirt_patch_default(type, clobbers, ibuf, addr, len); | |
78 | break; | |
f233f7f1 PZI |
79 | |
80 | patch_site: | |
81 | ret = paravirt_patch_insns(ibuf, len, start, end); | |
82 | break; | |
53fd13cf GOC |
83 | } |
84 | #undef PATCH_SITE | |
85 | return ret; | |
86 | } |