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s390/dump: streamline oldmem copy functions

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Introduce two copy functions for the memory of the dumped system,
copy_oldmem_kernel() to copy to the virtual kernel address space
and copy_oldmem_user() to copy to user space.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2015-10-12 10:43:37 +02:00
parent 8a07dd02d7
commit df9694c797
6 changed files with 105 additions and 102 deletions
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2
arch/s390/include/asm/os_info.h
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@@ -38,7 +38,7 @@ u32 os_info_csum(struct os_info *os_info);
#ifdef CONFIG_CRASH_DUMP
void *os_info_old_entry(int nr, unsigned long *size);
int copy_from_oldmem(void *dest, void *src, size_t count);
int copy_oldmem_kernel(void *dst, void *src, size_t count);
#else
static inline void *os_info_old_entry(int nr, unsigned long *size)
{