Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Michael Holzheu |
173 |
67.32% |
2 |
33.33% |
| Alexander Gordeev |
81 |
31.52% |
2 |
33.33% |
| Martin Schwidefsky |
2 |
0.78% |
1 |
16.67% |
| Greg Kroah-Hartman |
1 |
0.39% |
1 |
16.67% |
| Total |
257 |
|
6 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* OS info memory interface
*
* Copyright IBM Corp. 2012
* Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
*/
#ifndef _ASM_S390_OS_INFO_H
#define _ASM_S390_OS_INFO_H
#include <linux/uio.h>
#define OS_INFO_VERSION_MAJOR 1
#define OS_INFO_VERSION_MINOR 1
#define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */
#define OS_INFO_VMCOREINFO 0
#define OS_INFO_REIPL_BLOCK 1
struct os_info_entry {
u64 addr;
u64 size;
u32 csum;
} __packed;
struct os_info {
u64 magic;
u32 csum;
u16 version_major;
u16 version_minor;
u64 crashkernel_addr;
u64 crashkernel_size;
struct os_info_entry entry[2];
u8 reserved[4024];
} __packed;
void os_info_init(void);
void os_info_entry_add(int nr, void *ptr, u64 len);
void os_info_crashkernel_add(unsigned long base, unsigned long size);
u32 os_info_csum(struct os_info *os_info);
#ifdef CONFIG_CRASH_DUMP
void *os_info_old_entry(int nr, unsigned long *size);
size_t copy_oldmem_iter(struct iov_iter *iter, unsigned long src, size_t count);
static inline int copy_oldmem_kernel(void *dst, unsigned long src, size_t count)
{
struct iov_iter iter;
struct kvec kvec;
kvec.iov_base = dst;
kvec.iov_len = count;
iov_iter_kvec(&iter, WRITE, &kvec, 1, count);
if (copy_oldmem_iter(&iter, src, count) < count)
return -EFAULT;
return 0;
}
#else
static inline void *os_info_old_entry(int nr, unsigned long *size)
{
return NULL;
}
#endif
#endif /* _ASM_S390_OS_INFO_H */