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/* 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 */
/* Page size definitions */
#define PAGE_SHIFT 12
#define PAGE_SIZE BIT_ULL(PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
/* Is there a portable way to do this? */
static inline void cpu_relax(void)
{
barrier();
}
/* Get the instruction length */
static inline int insn_length(unsigned char code)
{
return ((((int)code + 64) >> 7) + 1) << 1;
}
#endif
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