diff options
Diffstat (limited to 'tools/testing/selftests/kvm/include/s390x/processor.h')
-rw-r--r-- | tools/testing/selftests/kvm/include/s390x/processor.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/s390x/processor.h b/tools/testing/selftests/kvm/include/s390x/processor.h new file mode 100644 index 000000000..255c9b990 --- /dev/null +++ b/tools/testing/selftests/kvm/include/s390x/processor.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * s390x processor specific defines + */ +#ifndef SELFTEST_KVM_PROCESSOR_H +#define SELFTEST_KVM_PROCESSOR_H + +#include <linux/compiler.h> + +/* Bits in the region/segment table entry */ +#define REGION_ENTRY_ORIGIN ~0xfffUL /* region/segment table origin */ +#define REGION_ENTRY_PROTECT 0x200 /* region protection bit */ +#define REGION_ENTRY_NOEXEC 0x100 /* region no-execute bit */ +#define REGION_ENTRY_OFFSET 0xc0 /* region table offset */ +#define REGION_ENTRY_INVALID 0x20 /* invalid region table entry */ +#define REGION_ENTRY_TYPE 0x0c /* region/segment table type mask */ +#define REGION_ENTRY_LENGTH 0x03 /* region third length */ + +/* Bits in the page table entry */ +#define PAGE_INVALID 0x400 /* HW invalid bit */ +#define PAGE_PROTECT 0x200 /* HW read-only bit */ +#define PAGE_NOEXEC 0x100 /* HW no-execute bit */ + +/* Is there a portable way to do this? */ +static inline void cpu_relax(void) +{ + barrier(); +} + +#endif |