1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * s390x processor specific defines
4 */
5 #ifndef SELFTEST_KVM_PROCESSOR_H
6 #define SELFTEST_KVM_PROCESSOR_H
7
8 #include <linux/compiler.h>
9
10 /* Bits in the region/segment table entry */
11 #define REGION_ENTRY_ORIGIN ~0xfffUL /* region/segment table origin */
12 #define REGION_ENTRY_PROTECT 0x200 /* region protection bit */
13 #define REGION_ENTRY_NOEXEC 0x100 /* region no-execute bit */
14 #define REGION_ENTRY_OFFSET 0xc0 /* region table offset */
15 #define REGION_ENTRY_INVALID 0x20 /* invalid region table entry */
16 #define REGION_ENTRY_TYPE 0x0c /* region/segment table type mask */
17 #define REGION_ENTRY_LENGTH 0x03 /* region third length */
18
19 /* Bits in the page table entry */
20 #define PAGE_INVALID 0x400 /* HW invalid bit */
21 #define PAGE_PROTECT 0x200 /* HW read-only bit */
22 #define PAGE_NOEXEC 0x100 /* HW no-execute bit */
23
24 /* Is there a portable way to do this? */
25 static inline void cpu_relax(void)
26 {
27 barrier();
28 }
29
30 #endif
31
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