1 #ifndef _ASM_X86_INVPCID_H_
2 #define _ASM_X86_INVPCID_H_
3
4 #include <xen/types.h>
5
6 extern bool use_invpcid;
7
8 #define INVPCID_OPCODE ".byte 0x66, 0x0f, 0x38, 0x82\n"
9 #define MODRM_ECX_01 ".byte 0x01\n"
10
invpcid(unsigned int pcid,unsigned long addr,unsigned int type)11 static inline void invpcid(unsigned int pcid, unsigned long addr,
12 unsigned int type)
13 {
14 struct {
15 uint64_t pcid:12;
16 uint64_t reserved:52;
17 uint64_t addr;
18 } desc = { .pcid = pcid, .addr = addr };
19
20 asm volatile (
21 #ifdef HAVE_AS_INVPCID
22 "invpcid %[desc], %q[type]"
23 : /* No output */
24 : [desc] "m" (desc), [type] "r" (type)
25 #else
26 INVPCID_OPCODE MODRM_ECX_01
27 : /* No output */
28 : "a" (type), "c" (&desc)
29 #endif
30 : "memory" );
31 }
32
33 /* Flush all mappings for a given PCID and addr, not including globals */
invpcid_flush_one(unsigned int pcid,unsigned long addr)34 static inline void invpcid_flush_one(unsigned int pcid, unsigned long addr)
35 {
36 invpcid(pcid, addr, X86_INVPCID_INDIV_ADDR);
37 }
38
39 /* Flush all mappings for a given PCID, not including globals */
invpcid_flush_single_context(unsigned int pcid)40 static inline void invpcid_flush_single_context(unsigned int pcid)
41 {
42 invpcid(pcid, 0, X86_INVPCID_SINGLE_CTXT);
43 }
44
45 /* Flush all mappings, including globals, for all PCIDs */
invpcid_flush_all(void)46 static inline void invpcid_flush_all(void)
47 {
48 invpcid(0, 0, X86_INVPCID_ALL_INCL_GLOBAL);
49 }
50
51 /* Flush all mappings for all PCIDs, excluding globals */
invpcid_flush_all_nonglobals(void)52 static inline void invpcid_flush_all_nonglobals(void)
53 {
54 invpcid(0, 0, X86_INVPCID_ALL_NON_GLOBAL);
55 }
56
57 #endif /* _ASM_X86_INVPCID_H_ */
58
59 /*
60 * Local variables:
61 * mode: C
62 * c-file-style: "BSD"
63 * c-basic-offset: 4
64 * tab-width: 4
65 * indent-tabs-mode: nil
66 * End:
67 */
68