cb78edfdce
kdump only allocates memory for the prstatus ELF note. For s390x, besides of prstatus multiple ELF notes for various different register types are stored. Therefore the currently allocated memory is not sufficient. With this patch the KEXEC_NOTE_BYTES macro can be defined by architecture code and for s390x it is set to the correct size now. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* include/asm-s390/kexec.h
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*
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* (C) Copyright IBM Corp. 2005
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*
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* Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
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*
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*/
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#ifndef _S390_KEXEC_H
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#define _S390_KEXEC_H
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#ifdef __KERNEL__
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#include <asm/page.h>
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#endif
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#include <asm/processor.h>
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/*
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* KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
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* I.e. Maximum page that is mapped directly into kernel memory,
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* and kmap is not required.
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*/
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/* Maximum physical address we can use pages from */
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#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
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/* Maximum address we can reach in physical address mode */
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#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
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/* Maximum address we can use for the control pages */
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/* Not more than 2GB */
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#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
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/* Maximum address we can use for the crash control pages */
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#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL)
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/* Allocate one page for the pdp and the second for the code */
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#define KEXEC_CONTROL_PAGE_SIZE 4096
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/* Alignment of crashkernel memory */
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#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE
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/* The native architecture */
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#define KEXEC_ARCH KEXEC_ARCH_S390
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/*
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* Size for s390x ELF notes per CPU
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*
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* Seven notes plus zero note at the end: prstatus, fpregset, timer,
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* tod_cmp, tod_reg, control regs, and prefix
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*/
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#define KEXEC_NOTE_BYTES \
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(ALIGN(sizeof(struct elf_note), 4) * 8 + \
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ALIGN(sizeof("CORE"), 4) * 7 + \
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ALIGN(sizeof(struct elf_prstatus), 4) + \
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ALIGN(sizeof(elf_fpregset_t), 4) + \
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ALIGN(sizeof(u64), 4) + \
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ALIGN(sizeof(u64), 4) + \
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ALIGN(sizeof(u32), 4) + \
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ALIGN(sizeof(u64) * 16, 4) + \
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ALIGN(sizeof(u32), 4) \
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)
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/* Provide a dummy definition to avoid build failures. */
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static inline void crash_setup_regs(struct pt_regs *newregs,
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struct pt_regs *oldregs) { }
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#endif /*_S390_KEXEC_H */
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