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