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252b6fd2e1
Multiple test cases need page size and shift definitions. By moving the definitions to a single architecture specific header we limit the repetition. Make use of PAGE_SIZE, PAGE_SHIFT and PAGE_MASK defines in existing code. Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Link: https://lore.kernel.org/r/20240807154512.316936-2-schlameuss@linux.ibm.com Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Message-ID: <20240807154512.316936-2-schlameuss@linux.ibm.com>
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* s390x processor specific defines
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*/
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#ifndef SELFTEST_KVM_PROCESSOR_H
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#define SELFTEST_KVM_PROCESSOR_H
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#include <linux/compiler.h>
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/* Bits in the region/segment table entry */
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#define REGION_ENTRY_ORIGIN ~0xfffUL /* region/segment table origin */
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#define REGION_ENTRY_PROTECT 0x200 /* region protection bit */
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#define REGION_ENTRY_NOEXEC 0x100 /* region no-execute bit */
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#define REGION_ENTRY_OFFSET 0xc0 /* region table offset */
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#define REGION_ENTRY_INVALID 0x20 /* invalid region table entry */
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#define REGION_ENTRY_TYPE 0x0c /* region/segment table type mask */
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#define REGION_ENTRY_LENGTH 0x03 /* region third length */
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/* Bits in the page table entry */
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#define PAGE_INVALID 0x400 /* HW invalid bit */
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#define PAGE_PROTECT 0x200 /* HW read-only bit */
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#define PAGE_NOEXEC 0x100 /* HW no-execute bit */
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/* Page size definitions */
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#define PAGE_SHIFT 12
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#define PAGE_SIZE BIT_ULL(PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE - 1))
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/* Is there a portable way to do this? */
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static inline void cpu_relax(void)
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{
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barrier();
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}
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#endif
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